| Anti-Infective Agents | Substances that prevent infectious agents or organisms from spreading or kill infectiou... more | 872 | 3911 | Details |
| Anti-Infective Agents, Local | Substances used on humans and other animals that destroy harmful microorganisms or inhi... more | 73 | 256 | Details |
| Anti-Infective Agents, Urinary | Substances capable of killing agents causing urinary tract infections or of preventing ... more | 26 | 106 | Details |
| Anti-Inflammatory Agents | Substances that reduce or suppress INFLAMMATION. | 299 | 1595 | Details |
| Anti-inflammatory agents, indomethacin derivatives | Not Available | 0 | 0 | Details |
| Anti-inflammatory Agents, Miscellaneous | Not Available | 2 | 7 | Details |
| Anti-Inflammatory Agents, Non-Steroidal | Anti-inflammatory agents that are non-steroidal in nature. In addition to anti-inflamma... more | 142 | 723 | Details |
| Anti-Inflammatory Agents, Non-Steroidal (Non-Selective) | Not Available | 42 | 435 | Details |
| Anti-inflammatory/analgesic agents, ibuprofen derivatives | Not Available | 0 | 0 | Details |
| Anti-Obesity Agents | Agents that increase energy expenditure and weight loss by neural and chemical regulati... more | 18 | 71 | Details |
| Anti-Parathyroid Agents | Not Available | 7 | 16 | Details |
| Anti-Parkinson Agents (Dopamine Agonist) | Not Available | 9 | 99 | Details |
| Anti-Parkinson Drugs | Agents used in the treatment of Parkinson's disease. The most commonly used drugs act o... more | 50 | 317 | Details |
| Anti-Retroviral Agents | Agents used to treat RETROVIRIDAE INFECTIONS. | 65 | 435 | Details |
| Anti-Ulcer Agents | Various agents with different action mechanisms used to treat or ameliorate PEPTIC ULCE... more | 50 | 227 | Details |
| Antiadrenal Preparations | Not Available | 4 | 72 | Details |
| Antiadrenergic Agents, Centrally Acting | Not Available | 12 | 67 | Details |
| Antiadrenergic Agents, Ganglion-Blocking | Not Available | 2 | 7 | Details |
| Antiadrenergic Agents, Peripherally Acting | Not Available | 12 | 46 | Details |
| Antiallergic Agents, Excl. Corticosteroids | Not Available | 8 | 46 | Details |
| Antiallergic respiratory tract drugs | Not Available | 0 | 0 | Details |
| Antiallergic respiratory tract drugs, xanoxic acid derivatives | Not Available | 0 | 0 | Details |
| Antiandrogens | Compounds which inhibit or antagonize the biosynthesis or actions of androgens. | 14 | 81 | Details |
| Antiandrogens and Estrogens | Not Available | 2 | 40 | Details |
| Antiandrogens, non-steroidal | Non steroidal compounds which inhibit or antagonize the biosynthesis or actions of andr... more | 6 | 37 | Details |