Ascorbic acid 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folic acid 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / thiamine 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / zinc oxide 25 mg Oral Tablet [Prenatal Rx 1]
RxNorm 797654

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 797654 represents a standardized clinical drug concept used for cross-system interoperability. This concept aggregates multiple Atom IDs (AUIs), which are specific naming variations and synonyms used across pharmaceutical databases to ensure accurate medication mapping for: ascorbic acid 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folic acid 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / thiamine 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / zinc oxide 25 mg Oral Tablet [Prenatal Rx 1].

The following semantic concepts and normalized strings are associated with this clinical entity:

SBD
Ascorbic acid 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folic acid 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / thiamine 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / zinc oxide 25 mg Oral Tablet [Prenatal Rx 1]
AUI:12366541
SY
Prenatal Rx 1, Prenatal Vitamin with Minerals and Folic Acid greater than 0.8 mg Oral Tablet
AUI:2850838
SY
Vit-C 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folate 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / vit-B1 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / ZNO 25 mg Oral Tablet [Prenatal Rx 1]
AUI:12376478
SY
Vit-C 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folate 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / vitamin B1 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / ZNO 25 mg Oral Tablet [Prenatal Rx 1]
AUI:12375720
SY
Vitamin C 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folate 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / vit-B1 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / ZNO 25 mg Oral Tablet [Prenatal Rx 1]
AUI:12375641
SY
Vitamin C 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folate 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / vitamin B1 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / ZNO 25 mg Oral Tablet [Prenatal Rx 1]
AUI:12376341

This clinical crossover tool is designed for healthcare professionals, pharmacists, and data analysts to safely compare substitute products and manage medication interoperability.

SBD

Semantic Branded Drug (SBD):
Ascorbic acid 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folic acid 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / thiamine 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / zinc oxide 25 mg Oral Tablet [Prenatal Rx 1]
(Atom ID: 12366541)

Clinical Status & Identity

Prescribable Status
NO (Reference)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
ascorbic acid 80 MG / biotin 0.03 MG / calcium carbonate 200 MG / cupric oxide 3 MG / ferrous fumarate 60 MG / folic acid 1 MG / magnesium oxide 100 MG / niacinamide 17 MG / pantothenic acid 7 MG / riboflavin 1.6 MG / thiamine 1.5 MG / vitamin A 4000 UNT / vitamin B12 0.0025 MG / vitamin B6 4 MG / vitamin E 400 UNT / zinc oxide 25 MG Oral Tablet [Prenatal Rx 1]
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
O
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
797654
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12366541
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SBD
Semantic Branded Drug (Ingredient + Strength + Dose Form + Brand Name)
Source Code
797654
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
RxNorm Vocabulary (RXNORM)
The official name and abbreviation for the vocabulary source.
Source Version
20AA_260601F
The specific version of the vocabulary provided by the source.
Update Date
June 01, 2026
The date when this RxNorm data was last updated by the NLM.
License Contact
RxNorm Customer Service, , U.S. National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, (888) FIND-NLM, , https://support.nlm.nih.gov/support/create-case/, https://www.nlm.nih.gov/research/umls/rxnorm/
Source licensing contact information.

Technical Attributes & Logic

RXN AI
{315518} 1897
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{315966} 4511
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{316890} 11246
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{317537} 317841
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{334409} 6582
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{336616} 24941
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{349807} 10454
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{349897} 11423
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{350183} 1151
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{350184} 11248
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{350186} 7891
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{350187} 9346
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{350320} 7405
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{350329} 21837
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{350469} 42954
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{797461} 1588
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AM
{315518} 1897
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{315966} 4511
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{316890} 11246
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{317537} 317841
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{334409} 1426853
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{336616} 1541238
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{349807} 10454
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{349897} 1546264
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{350183} 1151
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{350184} 11248
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{350186} 7891
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{350187} 9346
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{350320} 7405
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{350329} 21837
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{350469} 42954
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{797461} 1588
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{315518} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{315966} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{316890} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{317537} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{334409} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{336616} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{349807} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{349897} AM
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{350183} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{350184} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{350186} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{350187} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{350320} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{350329} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{350469} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{797461} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN OBSOLETED
04/30/2020
Date the RxNorm atom became obsolete
RXTERM FORM
Tab
The RxTerm dose form name for this drug

SY

Synonym (SY):
Prenatal Rx 1, Prenatal Vitamin with Minerals and Folic Acid greater than 0.8 mg Oral Tablet
(Atom ID: 2850838)

Clinical Status & Identity

Prescribable Status
NO (Reference)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
Prenatal Rx 1, Prenatal Vitamin with Minerals and Folic Acid greater than 0.8 MG Oral Tablet
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
O
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
797654
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
2850838
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
797654
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
RxNorm Vocabulary (RXNORM)
The official name and abbreviation for the vocabulary source.
Source Version
20AA_260601F
The specific version of the vocabulary provided by the source.
Update Date
June 01, 2026
The date when this RxNorm data was last updated by the NLM.
License Contact
RxNorm Customer Service, , U.S. National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, (888) FIND-NLM, , https://support.nlm.nih.gov/support/create-case/, https://www.nlm.nih.gov/research/umls/rxnorm/
Source licensing contact information.

SY

Synonym (SY):
Vit-C 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folate 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / vit-B1 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / ZNO 25 mg Oral Tablet [Prenatal Rx 1]
(Atom ID: 12376478)

Clinical Status & Identity

Prescribable Status
NO (Reference)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
vit-C 80 MG / biotin 0.03 MG / calcium carbonate 200 MG / cupric oxide 3 MG / ferrous fumarate 60 MG / folate 1 MG / magnesium oxide 100 MG / niacinamide 17 MG / pantothenic acid 7 MG / riboflavin 1.6 MG / vit-B1 1.5 MG / vitamin A 4000 UNT / vitamin B12 0.0025 MG / vitamin B6 4 MG / vitamin E 400 UNT / ZNO 25 MG Oral Tablet [Prenatal Rx 1]
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
O
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
797654
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12376478
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
797654
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
RxNorm Vocabulary (RXNORM)
The official name and abbreviation for the vocabulary source.
Source Version
20AA_260601F
The specific version of the vocabulary provided by the source.
Update Date
June 01, 2026
The date when this RxNorm data was last updated by the NLM.
License Contact
RxNorm Customer Service, , U.S. National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, (888) FIND-NLM, , https://support.nlm.nih.gov/support/create-case/, https://www.nlm.nih.gov/research/umls/rxnorm/
Source licensing contact information.

SY

Synonym (SY):
Vit-C 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folate 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / vitamin B1 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / ZNO 25 mg Oral Tablet [Prenatal Rx 1]
(Atom ID: 12375720)

Clinical Status & Identity

Prescribable Status
NO (Reference)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
vit-C 80 MG / biotin 0.03 MG / calcium carbonate 200 MG / cupric oxide 3 MG / ferrous fumarate 60 MG / folate 1 MG / magnesium oxide 100 MG / niacinamide 17 MG / pantothenic acid 7 MG / riboflavin 1.6 MG / vitamin B1 1.5 MG / vitamin A 4000 UNT / vitamin B12 0.0025 MG / vitamin B6 4 MG / vitamin E 400 UNT / ZNO 25 MG Oral Tablet [Prenatal Rx 1]
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
O
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
797654
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12375720
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
797654
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
RxNorm Vocabulary (RXNORM)
The official name and abbreviation for the vocabulary source.
Source Version
20AA_260601F
The specific version of the vocabulary provided by the source.
Update Date
June 01, 2026
The date when this RxNorm data was last updated by the NLM.
License Contact
RxNorm Customer Service, , U.S. National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, (888) FIND-NLM, , https://support.nlm.nih.gov/support/create-case/, https://www.nlm.nih.gov/research/umls/rxnorm/
Source licensing contact information.

SY

Synonym (SY):
Vitamin C 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folate 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / vit-B1 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / ZNO 25 mg Oral Tablet [Prenatal Rx 1]
(Atom ID: 12375641)

Clinical Status & Identity

Prescribable Status
NO (Reference)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
vitamin C 80 MG / biotin 0.03 MG / calcium carbonate 200 MG / cupric oxide 3 MG / ferrous fumarate 60 MG / folate 1 MG / magnesium oxide 100 MG / niacinamide 17 MG / pantothenic acid 7 MG / riboflavin 1.6 MG / vit-B1 1.5 MG / vitamin A 4000 UNT / vitamin B12 0.0025 MG / vitamin B6 4 MG / vitamin E 400 UNT / ZNO 25 MG Oral Tablet [Prenatal Rx 1]
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
O
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
797654
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12375641
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
797654
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
RxNorm Vocabulary (RXNORM)
The official name and abbreviation for the vocabulary source.
Source Version
20AA_260601F
The specific version of the vocabulary provided by the source.
Update Date
June 01, 2026
The date when this RxNorm data was last updated by the NLM.
License Contact
RxNorm Customer Service, , U.S. National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, (888) FIND-NLM, , https://support.nlm.nih.gov/support/create-case/, https://www.nlm.nih.gov/research/umls/rxnorm/
Source licensing contact information.

SY

Synonym (SY):
Vitamin C 80 mg / biotin 0.03 mg / calcium carbonate 200 mg / cupric oxide 3 mg / ferrous fumarate 60 mg / folate 1 mg / magnesium oxide 100 mg / niacinamide 17 mg / pantothenic acid 7 mg / riboflavin 1.6 mg / vitamin B1 1.5 mg / vitamin A 4000 UNT / vitamin B12 0.0025 mg / vitamin B6 4 mg / vitamin E 400 UNT / ZNO 25 mg Oral Tablet [Prenatal Rx 1]
(Atom ID: 12376341)

Clinical Status & Identity

Prescribable Status
NO (Reference)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
vitamin C 80 MG / biotin 0.03 MG / calcium carbonate 200 MG / cupric oxide 3 MG / ferrous fumarate 60 MG / folate 1 MG / magnesium oxide 100 MG / niacinamide 17 MG / pantothenic acid 7 MG / riboflavin 1.6 MG / vitamin B1 1.5 MG / vitamin A 4000 UNT / vitamin B12 0.0025 MG / vitamin B6 4 MG / vitamin E 400 UNT / ZNO 25 MG Oral Tablet [Prenatal Rx 1]
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
O
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
797654
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12376341
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
797654
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
RxNorm Vocabulary (RXNORM)
The official name and abbreviation for the vocabulary source.
Source Version
20AA_260601F
The specific version of the vocabulary provided by the source.
Update Date
June 01, 2026
The date when this RxNorm data was last updated by the NLM.
License Contact
RxNorm Customer Service, , U.S. National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, (888) FIND-NLM, , https://support.nlm.nih.gov/support/create-case/, https://www.nlm.nih.gov/research/umls/rxnorm/
Source licensing contact information.