ATC code A

v • d • e Major drug groups

Gastrointestinal tract/metabolism (A)	stomach acid (Antacids, H₂ antagonists, Proton pump inhibitors) • Antiemetics • Laxatives • Antidiarrhoeals/Antipropulsives • Anti-obesity drugs • Anti-diabetics • Vitamins • Dietary minerals

Blood and blood forming organs (B)	Anticoagulants • Antihemorrhagics • Antiplatelets • Thrombolytics

Cardiovascular system (C)	Antiarrhythmics • Antihypertensives • Diuretics • Vasodilators • Antianginals • Beta blockers • ACE inhibitors • Antihyperlipidemics

Skin (D)	Emollients • Cicatrizant • Antipruritics

Reproductive system (G)	Hormonal contraception • Fertility agents • SERMs • Sex hormones

Endocrine system (H)	Corticosteroids • Sex hormones • Thyroid hormones

Infections and infestations (J, P)	Antibiotics • Antivirals • Vaccines • Antifungals • Antiparasitic (Antiprotozoals, Anthelmintics)

Malignant and immune disease (L)	Anticancer agents • Immunostimulators • Immunosuppressants

Muscles, bones, and joints (M)	Anabolic steroids • Anti-inflammatories • Antirheumatics • Corticosteroids • Muscle relaxants

Brain and nervous system (N)	Anesthetics (General, Local) • Analgesics • Anticonvulsants • Mood stabilizers • Psycholeptic (Anxiolytics, Antipsychotics, Hypnotics/Sedatives) • Psychoanaleptic (Antidepressants, Stimulants/Psychostimulants)

Respiratory system (R)	Bronchodilators • Decongestants • H₁ antagonists