Major drug classes

Anti-infectives
1A Antifungals
1B Antimalarials
1C Antiparasitics and anthelmintics
1D Antiretrovirals
1E Antituberculars
1F Antivirals
1G Cephalosporins
1H Macrolides
1I Penicillins
1J Quinolones
1K Sulfonamides and combinations
1L Tetracyclines
1M Urinary tract agents
1N Miscellaneous anti-infectives
Cardiovascular, hypertension, cholesterol
2A ACE-Inhibitors and combinations
2B Alpha-adrenergic agents
2C Angiotensin II Receptor Blockers and combinations
2D Anticoagulants and hemostasis agents
2E Beta blockers and combinations
2F Calcium channel blockers and combinations
2G Cardiovascular treatment
2H Diuretics
2I Lipid-lowering agents
2J Nitrates and combinations
2K Renin-inhibitors and combinations
2L Miscellaneous antihypertensives
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Central nervous system
3A Alzheimer's therapy
3B Anticonvulsants
3C Antidepressants
3D Antipsychotics
3E Anxiolytics
3F CNS stimulants
3G Migraine therapy
3H Myasthenia gravis
3I Narcotic antagonists
3J Narcotic mixed agonist and antagonist
3K Narcotic and analgesic combinations
3L Narcotics
3M Nonsteroidal anti-inflammatory drugs
3N Parkinsons disease and related disorders
3O Salicylates
3P Sedative and hypnotics
3Q Skeletal muscle relaxants
3R Miscellaneous CNS
Gastrointestinal agents
4A 5-Aminosalicylic Acid (5-ASA) agents
4B Antidiarrheals and antispasmodics
4C Antiemetics
4D Bile acids
4E Bowel preparation and cleansing agents
4F Digestive enzymes
4G H2-Receptor antagonists
4H Proton Pump Inhibitors (PPI)
4I Topical anti-Inflammatory agents
4J Tumor Necrosis Factor (TNF) blocking agents
4K Ulcer therapy
4L Miscellaneous gastrointestinal agents
Obstetrics and gynecology
5A Contraceptives-Biphasic
5B Contraceptives-Misc.
5C Contraceptives-Monophasic
5D Contraceptives-Postcoital
5E Contraceptives-Triphasic
5F Estrogen and progestin combinations
5G Estrogens
5H Infertility treatment*
5I Progestins
5J Vaginal anti-infective and antifungal
5K Miscellaneous OB-GYN

Rheumatology and musculoskeletal
6A Corticosteroids
6B Gout therapy
6C Non-Tumor Necrosis Factor (TNF) blocking agents
6D Osteoporosis and bone resorption
6E Osteoporosis and hormonal treatment
6F Salicylates
6G Tumor Necrosis Factor (TNF) blocking agents
6H Miscellaneous rheumatologic agents
Endocrinology
7A Androgens
7B Antithyroid agents
7C Corticosteroids
7D Growth Hormone and related products
7E Insulins
7F Non-insulin hypoglycemic agents
7G Somatostatin analogs
7H Thyroid hormones
7I Urea cycle disorder agents
7J Vitamin D analogs
7K Miscellaneous endocrine
Antineoplastics and immunosuppresants
8A Adjuvant therapy
8B Alkylating agents
8C Antimetabolites
8D Hormonal agents
8E Immunomodulators
8F Kinase inhibitors and molecular target inhibitors
8G Miscellaneous antineoplastic agents
Immunology and hematolo
9A Hematopoietic agents
9B Immunoglobulins
9C Interferons and MS therapy
9D Miscellaneous immunology and hematology

Dermatology
10A Acne treatment
10B Antipsoriatic and antiseborrheic
10C Corticosteriods - very high potency
10D Corticosteroids - high potency
10E Corticosteroids - medium potency
10F Corticosteroids - low potency
10G Scabicides and pediculicides
10H Topical anesthetics
10I Topical antibacterials
10J Topical antifungals
10K Topical antineoplastic agents and immunomodulators
10L Topical antivirals
10M Wound and burn therapy
10N Miscellaneous dermatologicals
Ophthalmology
11A Cycloplegic mydriatics
11B Glaucoma agents
11C Ophthalmic anti-allergy agents
11D Ophthalmic anti-infective and steroid combinations
11E Ophthalmic anti-infectives
11F Ophthalmic anti-inflammatory agents
11G Ophthalmic beta blockers
11H Ophthalmic steroids
11I Miscellaneous ophthalmic agents
Otic and nasal preparations
12A Nasal preparations
12B Otic preparations
Respiratory, cough and cold
13A Antihistamine and decongestant combinations
13B Antihistamines
13C Antitussives
13D Cystic Fibrosis agents
13E Epinephrine
13F Inhaled anticholinergics
13G Inhaled beta-agonist and anticholinergic combinations
13H Inhaled beta-agonists
13I Inhaled steroid and beta-agonist combinations
13J Inhaled steroids
13K Intranasal steroids
13L Oral beta-agonists
13M Pulmonary Hypertension Agents
13N Theophyllines
13O Miscellaneous respiratory agents

Urology
14A BPH Treatment
14B Ion-Removing Agents
14C Urinary Antispasmodics
14D Miscellaneous Urologicals
Vitamins and supplements
15A Potassium Replacement
15B Vitamins and Minerals
Diagnostic and other miscellaneous
16A Chelating Agents
16B Diagnostics and Other Miscellaneous
16C Vaccines
Lifestyle modification
17A Sexual Dysfunction
17B Smoking Cessation
17C Weight Loss Preparations