RxNorm Semantic Concepts Index - 384

What is RxNorm?

RxNorm is a system developed and maintained by the National Library of Medicine (NLM). RxNorm is a normalized naming system for generic and branded drugs. RxNorm is also a tool that supports interoperability between different drug terminologies and other naming systems.

The following table is a complete listing of RxNorm concepts whose unique RxCUI identifier starts with "384".

Concept ID (RxCUI)NameTerm TypeTerm Type DescriptionIs Prescribable?
Concept ID (RxCUI): 38400AtomoxetineIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN).YES
Concept ID (RxCUI): 38400AtomoxetineDesignated preferred name (PT)YES
Concept ID (RxCUI): 38400AtomoxetineFull form of descriptor (FN)YES
Concept ID (RxCUI): 38400AtomoxetineDesignated preferred name (PT)YES
Concept ID (RxCUI): 38400AtomoxetineFull form of descriptor (FN)YES
Concept ID (RxCUI): 38404topiramateFull form of descriptor (FN)YES
Concept ID (RxCUI): 38404topiramateIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN).YES
Concept ID (RxCUI): 38404topiramateDesignated preferred name (PT)YES
Concept ID (RxCUI): 38404topiramateFull form of descriptor (FN)YES
Concept ID (RxCUI): 38404topiramateDesignated preferred name (PT)YES
Concept ID (RxCUI): 38409ToremifeneFull form of descriptor (FN)YES
Concept ID (RxCUI): 38409ToremifeneIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN).YES
Concept ID (RxCUI): 38409ToremifeneDesignated preferred name (PT)YES
Concept ID (RxCUI): 38409ToremifeneFull form of descriptor (FN)YES
Concept ID (RxCUI): 38409ToremifeneDesignated preferred name (PT)YES
Concept ID (RxCUI): 38413TorasemideFull form of descriptor (FN)YES
Concept ID (RxCUI): 38413TorasemideSynonym (SY)Synonym of another TTY, given for clarity.YES
Concept ID (RxCUI): 38413TorasemideFull form of descriptor (FN)YES
Concept ID (RxCUI): 38413TorasemideSynonym (SY)Synonym of another TTY, given for clarity.YES
Concept ID (RxCUI): 38413TorasemideIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN).YES
Concept ID (RxCUI): 38413TorasemideDesignated preferred name (PT)YES
Concept ID (RxCUI): 38413TorasemideDesignated preferred name (PT)YES
Concept ID (RxCUI): 384379cinacalcet hydrochloridePrecise Ingredient (PIN)A specified form of the ingredient that may or may not be clinically active. Most precise ingredients are salt or isomer forms.YES
Concept ID (RxCUI): 384379cinacalcet hydrochlorideDesignated preferred name (PT)YES
Concept ID (RxCUI): 384379cinacalcet hydrochlorideFull form of descriptor (FN)YES
Concept ID (RxCUI): 384394follitropin beta 200 UNT/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384401calcifediol Oral Capsule [Calderol]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384410Ethinylestradiol- and norethisterone-containing productMultiple Ingredients (MIN)Two or more ingredients appearing together in a single drug preparation, created from SCDF. In rare cases when IN/PIN or PIN/PIN combinations of the same base ingredient exist, created from SCD.YES
Concept ID (RxCUI): 384410Ethinylestradiol- and norethisterone-containing productDesignated preferred name (PT)YES
Concept ID (RxCUI): 384410Ethinylestradiol- and norethisterone-containing productSynonym (SY)Synonym of another TTY, given for clarity.YES
Concept ID (RxCUI): 384410Ethinylestradiol- and norethisterone-containing productFull form of descriptor (FN)YES
Concept ID (RxCUI): 384427desmopressin Nasal Solution [DDAVP]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameYES
Concept ID (RxCUI): 384455tigecyclineFull form of descriptor (FN)YES
Concept ID (RxCUI): 384455tigecyclineIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN).YES
Concept ID (RxCUI): 384455tigecyclineDesignated preferred name (PT)YES
Concept ID (RxCUI): 384455tigecyclineFull form of descriptor (FN)YES
Concept ID (RxCUI): 384455tigecyclineDesignated preferred name (PT)YES
Concept ID (RxCUI): 384470beclomethasone Topical Ointment [Beconase]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384472vitamin B6 Extended Release Oral CapsuleSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384477didanosine 1 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384478didanosine 2.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384479phosphocellulose Oral PowderSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384480didanosine 1.67 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384481benzocaine Oral OintmentSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384483cocaine Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384485permethrin Topical FoamSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384486vitamin E 0.005 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384487triclosan / vitamin E Medicated Bar SoapSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384488quinfamide Oral SuspensionSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384489pipenzolate / simethicone Oral SuspensionSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384492thiabendazole Topical LotionSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384493zinc pyrithione 0.01 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384494zinc pyrithione 0.005 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384495triclosan 0.001 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384496resorcinol 0.005 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384497resorcinol / sulfur Medicated Bar SoapSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384499betamethasone Topical FoamSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384500betamethasone Topical Foam [Luxiq]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameYES
Concept ID (RxCUI): 384501sulfacetamide / sulfur Topical SolutionSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384502acetaminophen / chlorpheniramine / pseudoephedrine Oral PowderSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384503salicylic acid Topical Foam [SalAc]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384518Oyst-Cal 500 MG Oral Tablet, as calcium carbonateSemantic Branded Drug (SBD)Ingredient + Strength + Dose Form + Brand NameNO
Concept ID (RxCUI): 384518Oyst-Cal 500 MG Oral Tablet, as calcium carbonateSynonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384518Oyst-Cal 500 MG Oral Tablet, as calcium carbonatePrescribable Name (PSN)Synonym of another TTY, given for clarity and for display purposes in electronic prescribing applications. Only one PSN per concept.NO
Concept ID (RxCUI): 384523lidocaine 20 MG/ML / tribenoside 50 MG/ML Rectal CreamSemantic Clinical Drug (SCD)Ingredient + Strength + Dose FormNO
Concept ID (RxCUI): 384524milk of magnesia 385 MG Chewable TabSemantic Clinical Drug (SCD)Ingredient + Strength + Dose FormNO
Concept ID (RxCUI): 384524milk of magnesia 385 MG Chewable TabSynonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 38453tramazolineFull form of descriptor (FN)NO
Concept ID (RxCUI): 38453tramazolineIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN).NO
Concept ID (RxCUI): 38453tramazolineDesignated preferred name (PT)NO
Concept ID (RxCUI): 38453tramazolineFull form of descriptor (FN)NO
Concept ID (RxCUI): 38453tramazolineDesignated preferred name (PT)NO
Concept ID (RxCUI): 384531acetaminophen / diphenhydramine Oral PowderSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384531acetaminophen / diphenhydramine Oral PowderTall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.YES
Concept ID (RxCUI): 384532colloidal oatmeal / salicylic acid Medicated Bar SoapSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 38454trandolaprilFull form of descriptor (FN)YES
Concept ID (RxCUI): 38454trandolaprilIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN).YES
Concept ID (RxCUI): 38454trandolaprilDesignated preferred name (PT)YES
Concept ID (RxCUI): 38454trandolaprilFull form of descriptor (FN)YES
Concept ID (RxCUI): 38454trandolaprilDesignated preferred name (PT)YES
Concept ID (RxCUI): 384540resorcinol 0.02 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384544benzoic acid 60 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384545sulfur 0.08 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384546salicylic acid 150 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384547dibucaine 10 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384548dibucaine 0.005 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 38455trans-1,2-Dihydrobenzene-1,2-diol dehydrogenaseDesignated preferred name (PT)NO
Concept ID (RxCUI): 38455trans-1,2-Dihydrobenzene-1,2-diol dehydrogenaseFull form of descriptor (FN)NO
Concept ID (RxCUI): 384551methyl salicylate 0.1 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384553salicylic acid 250 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384554zinc undecylenate 200 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384555undecylenic acid 50 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384556menthol 0.0125 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384557menthol 0.1 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384558anthralin 20 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384559menthol 20 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384560anthralin 30 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384561Neisseria meningitidis 0.25 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384562camphor 47 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384564diethylamine salicylate 0.1 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384565menthol 160 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384567mucopolysaccharide polysulfate 3 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384568chlortetracycline 30 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384569dibrompropamidine 1.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384570chlorquinaldol 30 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384571zinc acetate 0.001 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384572triclosan 0.003 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384573polynoxylin 100 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384574diperodon 5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384576myrtecaine 10 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384577menthol 26 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384579sodium acexamate 50 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384584Vegetable fiberSynonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384584Vegetable fiberBritish synonym (SYGB)British synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384584Vegetable fiberDesignated preferred name (PT)NO
Concept ID (RxCUI): 384584Vegetable fiberFull form of descriptor (FN)NO
Concept ID (RxCUI): 384584Vegetable fiberBritish preferred term (PTGB)NO
Concept ID (RxCUI): 384584Vegetable fiberSynonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384584Vegetable fiberBritish synonym (SYGB)British synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384588alitretinoin Topical GelSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384589morphine Rectal Suppository [Sevredol]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 38459Cinnamic acid 4-hydroxylaseSynonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 38459Cinnamic acid 4-hydroxylaseDesignated preferred name (PT)NO
Concept ID (RxCUI): 38459Cinnamic acid 4-hydroxylaseFull form of descriptor (FN)NO
Concept ID (RxCUI): 384590morphine Extended Release Oral Tablet [MST Continus]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384592morphine Oral Tablet [Sevredol]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384593buprenorphine Sublingual Tablet [Subutex]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384594propoxyphene Oral Capsule [Doloxene]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384598methadone Oral Tablet [Physeptone]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384599pentazocine Oral Capsule [Fortral]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384600pentazocine Oral Tablet [Fortral]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384601pentazocine Injectable Solution [Fortral]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384602pentazocine Rectal Suppository [Fortral]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384603phenazocine 5 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384604phenazocine Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384611mephobarbital 30 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384612pramoxine Rectal FoamSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384613olopatadine Ophthalmic SolutionSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384614MasporinBrand Name (BN)A proprietary name for a family of products containing a specific active ingredient.NO
Concept ID (RxCUI): 384615hydrocortisone / neomycin / polymyxin B Otic Suspension [Masporin]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384619hydrocortisone / neomycin / polymyxin B Ophthalmic Suspension [Cortomycin]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384620polymyxin B 16.2 UNT/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384621benzocaine / clove oil Topical GelSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384622chitosan / chromium picolinate Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384626TetralysalBrand Name (BN)A proprietary name for a family of products containing a specific active ingredient.NO
Concept ID (RxCUI): 384627lymecycline Oral Capsule [Tetralysal]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384628minocycline Oral Tablet [Minocin]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384629minocycline Extended Release Oral CapsuleSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384630minocycline Extended Release Oral Capsule [Minocin]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384633polymyxin B / triamcinolone Ophthalmic OintmentSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384635chitosan Oral CapsuleSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384639benzocaine / clove oil Mucous Membrane Topical SolutionSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384640tiopronin Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384641galantamine Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384642galantamine Oral SolutionSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384646piracetam 333 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384648levodopa 125 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384649levodopa Oral Capsule [Brocadopa]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384650benserazide / levodopa Oral Capsule [Madopar]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384654orphenadrine Oral Tablet [Disipal]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384657biperiden Oral Tablet [Akineton]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384658methixene 5 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384659methixene Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384661tetrabenazine Oral Tablet [Nitoman]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384663aspirin 10 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384667aspirin 6.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384674neomycin 0.035 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384679cloxacillin Oral Capsule [Orbenin]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384680floxacillin Oral Capsule [Stafoxil]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384685ProntoBrand Name (BN)A proprietary name for a family of products containing a specific active ingredient.YES
Concept ID (RxCUI): 384686piperonyl butoxide / pyrethrins Medicated Shampoo [Pronto]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameYES
Concept ID (RxCUI): 384690DiphenylbutylpiperidineDesignated preferred name (PT)NO
Concept ID (RxCUI): 384690DiphenylbutylpiperidineFull form of descriptor (FN)NO
Concept ID (RxCUI): 384690DiphenylbutylpiperidineDesignated preferred name (PT)NO
Concept ID (RxCUI): 384690DiphenylbutylpiperidineFull form of descriptor (FN)NO
Concept ID (RxCUI): 384699Active C1qDesignated preferred name (PT)NO
Concept ID (RxCUI): 384699Active C1qFull form of descriptor (FN)NO
Concept ID (RxCUI): 384703Blood group antigen MARSynonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384703Blood group antigen MARDesignated preferred name (PT)NO
Concept ID (RxCUI): 384703Blood group antigen MARFull form of descriptor (FN)NO
Concept ID (RxCUI): 384703Blood group antigen MARSynonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384728Yersinia pseudotuberculosis antibodyDesignated preferred name (PT)NO
Concept ID (RxCUI): 384728Yersinia pseudotuberculosis antibodyFull form of descriptor (FN)NO
Concept ID (RxCUI): 384737econazole nitrate 10 MG/ML Topical Lotion [Ecostatin]Semantic Branded Drug (SBD)Ingredient + Strength + Dose Form + Brand NameNO
Concept ID (RxCUI): 384737econazole nitrate 10 MG/ML Topical Lotion [Ecostatin]Synonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384738econazole nitrate 0.01 MG/MG Topical Powder [Ecostatin]Semantic Branded Drug (SBD)Ingredient + Strength + Dose Form + Brand NameNO
Concept ID (RxCUI): 384738econazole nitrate 0.01 MG/MG Topical Powder [Ecostatin]Synonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384768Product containing sodium lactate in parenteral dose form (medicinal product form)Full form of descriptor (FN)NO
Concept ID (RxCUI): 384768Product containing sodium lactate in parenteral dose form (medicinal product form)Designated preferred name (PT)NO
Concept ID (RxCUI): 384786piroxicam 20 MG Disintegrating Oral TabletPrescribable Name (PSN)Synonym of another TTY, given for clarity and for display purposes in electronic prescribing applications. Only one PSN per concept.NO
Concept ID (RxCUI): 384786piroxicam 20 MG Disintegrating Oral TabletSemantic Clinical Drug (SCD)Ingredient + Strength + Dose FormNO
Concept ID (RxCUI): 384788lipase 8000 UNT / amylase 30,000 UNT / protease 30,000 UNT Delayed Release Oral CapsuleSynonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384788lipase 8000 UNT / amylase 30,000 UNT / protease 30,000 UNT Delayed Release Oral CapsuleDesignated preferred name (PT)NO
Concept ID (RxCUI): 384788lipase 8000 UNT / amylase 30,000 UNT / protease 30,000 UNT Delayed Release Oral CapsuleSemantic Clinical Drug (SCD)Ingredient + Strength + Dose FormNO
Concept ID (RxCUI): 384788lipase 8000 UNT / amylase 30,000 UNT / protease 30,000 UNT Delayed Release Oral CapsuleSynonym (SY)Synonym of another TTY, given for clarity.NO
Concept ID (RxCUI): 384788lipase 8000 UNT / amylase 30,000 UNT / protease 30,000 UNT Delayed Release Oral CapsulePrescribable Name (PSN)Synonym of another TTY, given for clarity and for display purposes in electronic prescribing applications. Only one PSN per concept.NO
Concept ID (RxCUI): 384788lipase 8000 UNT / amylase 30,000 UNT / protease 30,000 UNT Delayed Release Oral CapsuleFull form of descriptor (FN)NO
Concept ID (RxCUI): 384805Evans blue 5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384806methylene blue 55 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384807sodium phosphate, monobasic 200 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384808sodium phosphate, monobasic 325 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384809levOCARNitine 750 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384809levOCARNitine 750 MGTall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.NO
Concept ID (RxCUI): 384810methylene blue 1000 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384813methylene blue 10 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384814anthraquinone glycoside 50 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384815antihemophilic factor, porcine 1 UNTSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384817ardeparin sodium 730 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384818chlorophyllin copper complex 5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384823desoxycorticosterone 5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384824Digitalis preparation 32 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384825sodium phosphate, monobasic 0.002 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384826sodium phosphate, monobasic 0.01 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384827hypromellose 8 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384828alexitol sodium 360 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384829alexitol sodium 400 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384830alfacalcidol 0.001 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384831amorolfine 2.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384832amorolfine 50 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384833calcium ascorbate 50 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384834calcium ascorbate 80 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384835calcium ascorbate 125 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384837levobupivacaine 0.25 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384838levobupivacaine 0.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384839levobupivacaine 0.75 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384840hypromellose 20 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384842evening primrose oil 560 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384843evening primrose oil 1000 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384844evening primrose oil 1300 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384845evening primrose oil 365 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384846fumaric acid 120 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384850levOCARNitine 300 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384850levOCARNitine 300 MGTall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.NO
Concept ID (RxCUI): 384854methylene blue 20 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384857chlorophyllin copper complex 0.0013 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384858calcium ascorbate 105 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384859calcium ascorbate 200 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384860calcium ascorbate 550 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384861calcium ascorbate 850 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384862calcium ascorbate 250 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384863calcium ascorbate 1000 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384864calcium ascorbate 750 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384865cisatracurium 5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384866bran 650 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384867calcium iodide 60 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384868calcium iodide 65 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384873bran 850 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384874tolonium chloride 10 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384876calcium ascorbate 500 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384877calcium ascorbate 600 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384880magnesium lactate 264 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384883methylene blue 50 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384884methylene blue 0.2 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384885petrolatum 10 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384886petrolatum 498 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384887soy protein-iron complex 50 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384890inositol niacinate 500 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384891inositol niacinate 200 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384892inositol niacinate 750 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384893ispaghula husk 350 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384894sodium phosphate, monobasic 330 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384895ursodiol 100 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384900chlorophyllin copper complex 0.1 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384908inositol niacinate 150 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384910ethylnorepinephrine hydrochloride 1 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384912oxerutins 0.02 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384913methylene blue 10.8 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384914methylene blue 5.4 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384915urea c-13 125 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384918iotrolan 190 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384920anthraquinone glycoside 0.05 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384925dextran 150 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384926sodium phosphate, monobasic 350 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384927sodium phosphate, monobasic 40.8 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384931methionine 100 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384932methylene blue 6 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384933sodium fluoride 0.0272 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384940ondansetron 2.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384943sodium fluoride 27.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384944potassium nitrate 0.08 MG/MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384946sodium fluoride 7.23 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384947colfosceril 13.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384949treprostinil 1 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384950treprostinil 10 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384951treprostinil 2.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384952treprostinil 5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384953beclamide 500 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384954alfacalcidol 0.005 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384957glucose 150 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthYES
Concept ID (RxCUI): 384960levOCARNitine 200 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384960levOCARNitine 200 MGTall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.NO
Concept ID (RxCUI): 384961levOCARNitine 50 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384961levOCARNitine 50 MGTall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.NO
Concept ID (RxCUI): 384962sodium phosphate, monobasic 2.95 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384963sodium phosphate, monobasic 1.48 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384964sodium phosphate, monobasic 1720 MGSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384965gonadorelin 0.5 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384966magnesium hydroxide 83 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384969levOCARNitine 300 MG/MLSemantic Clinical Drug Component (SCDC)Ingredient + StrengthNO
Concept ID (RxCUI): 384969levOCARNitine 300 MG/MLTall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.NO
Concept ID (RxCUI): 384971butoconazole Vaginal Cream [Gynazole-1]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameYES
Concept ID (RxCUI): 384973chorionic gonadotropin Injectable Solution [Ovidrel]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 38497417-alpha-hydroxyprogesterone Injectable Solution [Prodrox]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 38497417-alpha-hydroxyprogesterone Injectable Solution [Prodrox]Tall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.NO
Concept ID (RxCUI): 38497517-alpha-hydroxyprogesterone Injectable Solution [Duralutin]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 38497517-alpha-hydroxyprogesterone Injectable Solution [Duralutin]Tall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.NO
Concept ID (RxCUI): 384976corticotropin Injectable Solution [ACTH Gel]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 38497717-alpha-hydroxyprogesterone Injectable Solution [Hylutin]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 38497717-alpha-hydroxyprogesterone Injectable Solution [Hylutin]Tall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.NO
Concept ID (RxCUI): 384981haloprogin Topical Solution [Halotex]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384982insulin isophane / insulin, regular, pork Injectable Suspension [Pork Mixtard 30]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384983ethambutol / isoniazid Oral Tablet [Mynah brand of ethambutol hydrochloride-isoniazid]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384984caffeine Oral Tablet [Revive brand of caffeine]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384985digoxin Oral Tablet [Cardoxin]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384986hyoscyamine Disintegrating Oral Tablet [Neosol]Semantic Branded Drug Form (SBDF)Ingredient + Dose Form + Brand NameNO
Concept ID (RxCUI): 384988soy protein-iron complex Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384989alexitol Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384990alfacalcidol Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384991amorolfine Topical SolutionSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384992ascorbic acid / calcium ascorbate Oral CapsuleSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384993ascorbic acid / calcium ascorbate Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384994ascorbic acid / calcium ascorbate Extended Release Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384996calcium ascorbate Oral CapsuleSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384997calcium ascorbate Chewable TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO
Concept ID (RxCUI): 384998calcium ascorbate Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormYES
Concept ID (RxCUI): 384999calcium ascorbate Extended Release Oral TabletSemantic Clinical Drug Form (SCDF)Ingredient + Dose FormNO