RxNorm Semantic Concepts Index - 550

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 "550".

RxCUINameTerm TypeTerm Type DescriptionIs Prescribable?
RxCUI: 55018dibasic potassium phosphateIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN). YES
RxCUI: 55019Potassium dihydrogen phosphatePrecise 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
RxCUI: 55019Potassium dihydrogen phosphateDesignated preferred name (PT) YES
RxCUI: 55019Potassium dihydrogen phosphateFull form of descriptor (FN) YES
RxCUI: 55019Potassium dihydrogen phosphateSynonym (SY)Synonym of another TTY, given for clarity. YES
RxCUI: 55019Potassium dihydrogen phosphateSynonym (SY)Synonym of another TTY, given for clarity. YES
RxCUI: 5502HydrogenlyaseDesignated preferred name (PT) NO
RxCUI: 5502HydrogenlyaseFull form of descriptor (FN) NO
RxCUI: 5502HydrogenlyaseSynonym (SY)Synonym of another TTY, given for clarity. NO
RxCUI: 55024Potassium tartrateIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN). NO
RxCUI: 55024Potassium tartrateDesignated preferred name (PT) NO
RxCUI: 55024Potassium tartrateFull form of descriptor (FN) NO
RxCUI: 5505Substance with hydrolase mechanism of actionDesignated preferred name (PT) NO
RxCUI: 5505Substance with hydrolase mechanism of actionDesignated preferred name (PT) NO
RxCUI: 5505Substance with hydrolase mechanism of actionFull form of descriptor (FN) NO
RxCUI: 5505Substance with hydrolase mechanism of actionSynonym (SY)Synonym of another TTY, given for clarity. NO
RxCUI: 5505Substance with hydrolase mechanism of actionFull form of descriptor (FN) NO
RxCUI: 550522-pyridine aldoxime methiodideSynonym (SY)Synonym of another TTY, given for clarity. NO
RxCUI: 550522-pyridine aldoxime methiodidePrecise Ingredient (PIN)A specified form of the ingredient that may or may not be clinically active. Most precise ingredients are salt or isomer forms. NO
RxCUI: 550522-pyridine aldoxime methiodideDesignated preferred name (PT) NO
RxCUI: 550522-pyridine aldoxime methiodideFull form of descriptor (FN) NO
RxCUI: 55053Pralidoxime mesilateSynonym (SY)Synonym of another TTY, given for clarity. NO
RxCUI: 55053Pralidoxime mesilateFull form of descriptor (FN) NO
RxCUI: 55053Pralidoxime mesilatePrecise Ingredient (PIN)A specified form of the ingredient that may or may not be clinically active. Most precise ingredients are salt or isomer forms. NO
RxCUI: 55053Pralidoxime mesilateDesignated preferred name (PT) NO
RxCUI: 55062Prednisolone sodium phosphatePrecise 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
RxCUI: 55062Prednisolone sodium phosphateDesignated preferred name (PT) YES
RxCUI: 55062Prednisolone sodium phosphateTall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs. YES
RxCUI: 55062Prednisolone sodium phosphateFull form of descriptor (FN) YES
RxCUI: 55063prednisolone sodium succinatePrecise Ingredient (PIN)A specified form of the ingredient that may or may not be clinically active. Most precise ingredients are salt or isomer forms. NO
RxCUI: 55063prednisolone sodium succinateTall Man Lettering Synonym (TMSY)Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs. NO
RxCUI: 55065PredsolBrand Name (BN)A proprietary name for a family of products containing a specific active ingredient. NO
RxCUI: 5507Sea snake venomDesignated preferred name (PT) NO
RxCUI: 5507Sea snake venomFull form of descriptor (FN) NO
RxCUI: 5509p-dihydroxybenzeneSynonym (SY)Synonym of another TTY, given for clarity. YES
RxCUI: 5509p-dihydroxybenzeneIngredient (IN)A compound or moiety that gives the drug its distinctive clinical properties. Ingredients generally use the United States Adopted Name (USAN). YES
RxCUI: 5509p-dihydroxybenzeneDesignated preferred name (PT) YES
RxCUI: 5509p-dihydroxybenzeneFull form of descriptor (FN) YES
RxCUI: 5509p-dihydroxybenzeneDesignated preferred name (PT) YES
RxCUI: 5509p-dihydroxybenzeneSynonym (SY)Synonym of another TTY, given for clarity. YES
RxCUI: 5509p-dihydroxybenzeneSynonym (SY)Synonym of another TTY, given for clarity. YES
RxCUI: 5509p-dihydroxybenzeneFull form of descriptor (FN) YES
RxCUI: 5509p-dihydroxybenzeneSynonym (SY)Synonym of another TTY, given for clarity. YES
RxCUI: 55092pridinol monomesylatePrecise Ingredient (PIN)A specified form of the ingredient that may or may not be clinically active. Most precise ingredients are salt or isomer forms. NO
RxCUI: 55097Primrose oilSynonym (SY)Synonym of another TTY, given for clarity. NO
RxCUI: 55099PripsenBrand Name (BN)A proprietary name for a family of products containing a specific active ingredient. NO