ATC code A11 Vitamins is a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the World Health Organization (WHO) for the classification of drugs and other medical products. Subgroup A11 is part of the anatomical group A Alimentary tract and metabolism.

Codes for veterinary use (ATCvet codes) can be created by placing the letter Q in front of the human ATC code: for example, QA11. National versions of the ATC classification may include additional codes not present in this list, which follows the WHO version.

A11A Multivitamins , combinations

A11AA Multivitamins with minerals

A11AA01 Multivitamins and iron

A11AA02 Multivitamins and calcium

A11AA03 Multivitamins and other minerals, including combinations

A11AA04 Multivitamins and trace elements

A11AB Multivitamins, other combinations

A11B Multivitamins, plain

A11BA Multivitamins, plain

A11C Vitamin A and D, including combinations of the two

A11CA Vitamin A, plain

A11CA01 Retinol (vitamin A)

A11CA02 Betacarotene

A11CB Vitamin A and D in combination

A11CC Vitamin D and analogues

A11CC01 Ergocalciferol

A11CC02 Dihydrotachysterol

A11CC03 Alfacalcidol

A11CC04 Calcitriol

A11CC05 Colecalciferol

A11CC06 Calcifediol

A11CC20 Combinations

A11CC55 Colecalciferol, combinations

A11D Vitamin B 1 , plain and in combination with vitamin B 6 and B 12

A11DA Vitamin B 1 , plain

A11DA01 Thiamine (vitamin B1)

A11DA02 Sulbutiamine

A11DA03 Benfotiamine

A11DB Vitamin B 1 in combination with vitamin B 6 and/or vitamin B 12

A11E Vitamin B-complex, including combinations

A11EA Vitamin B-complex, plain

A11EB Vitamin B-complex with vitamin C

A11EC Vitamin B-complex with minerals

A11ED Vitamin B-complex with anabolic steroids

A11EX Vitamin B-complex, other combinations

A11G Ascorbic acid ( vitamin C ), including combinations

A11GA Ascorbic acid (vitamin C), plain

A11GA01 Ascorbic acid (vitamin C)

A11GB Ascorbic acid (vitamin C), combinations

A11GB01 Ascorbic acid (vitamin C) and calcium

A11H Other plain vitamin preparations

A11HA Other plain vitamin preparations

A11HA01 Nicotinamide

A11HA02 Pyridoxine (vitamin B6)

A11HA03 Tocopherol (vitamin E)

A11HA04 Riboflavin (vitamin B2)

A11HA05 Biotin

A11HA06 Pyridoxal phosphate

A11HA07 Inositol

A11HA08 Tocofersolan

A11HA30 Dexpanthenol

A11HA31 Calcium pantothenate

A11HA32 Pantethine

A11J Other vitamin products, combinations

A11JA Combinations of vitamins

A11JB Vitamins with minerals

A11JC Vitamins, other combinations