| Aminohippuric Acids | A group of glycine amides of aminobenzoic acids. | 1 | 11 | Details |
| Aminohydrolases | Not Available | 3 | 3 | Details |
| Aminoketone Antidepressants | Not Available | 1 | 10 | Details |
| Aminolevulinate Synthase 1-Directed Small Interfering RNAs | RNA interference therapies that inhibit aminolevulinate synthase-1 expression. | 1 | 1 | Details |
| Aminopenicillins | Not Available | 2 | 20 | Details |
| Aminopeptidases, antagonists & inhibitors | Not Available | 1 | 5 | Details |
| Aminophenols | Phenols substituted in any position by an amino group. | 1 | 0 | Details |
| Aminopyridines | Pyridines substituted in any position with an amino group. May be hydrogenated, but mus... more | 10 | 48 | Details |
| Aminopyrine | A pyrazolone with analgesic, anti-inflammatory, and antipyretic properties but has risk... more | 1 | 3 | Details |
| Aminoquinolines | Quinolines substituted in any position by one or more amino groups. | 7 | 59 | Details |
| Aminosalicylate | Not Available | 4 | 44 | Details |
| Aminosalicylic Acid and Derivatives | Not Available | 1 | 5 | Details |
| Aminosalicylic Acids | A group of 2-hydroxybenzoic acids that can be substituted by amino groups at any of the... more | 3 | 21 | Details |
| Ammonia Detoxicants | Not Available | 2 | 2 | Details |
| Ammonia-Lyases | Enzymes that catalyze the formation of a carbon-carbon double bond by the elimination o... more | 1 | 0 | Details |
| Ammonium Compounds | Inorganic compounds that include a positively charged tetrahedral nitrogen (ammonium io... more | 28 | 57 | Details |
| Ammonium Ion Binding Activity | Not Available | 3 | 15 | Details |
| AMP-Activated Protein Kinases, antagonists & inhibitors | Not Available | 1 | 2 | Details |
| AMPA Receptor Antagonists | Not Available | 1 | 5 | Details |
| Amphenicols | Not Available | 2 | 12 | Details |
| Amphetamine Anorectic | Not Available | 1 | 14 | Details |
| Amphetamines | Analogs or derivatives of AMPHETAMINE. Many are sympathomimetics and central nervous sy... more | 26 | 103 | Details |
| Amphibian Venoms | Venoms produced by frogs, toads, salamanders, etc. The venom glands are usually on the ... more | 3 | 4 | Details |
| Amprenavir and Prodrugs | This category is used to create drug-drug interactions. | 2 | 12 | Details |
| Amylases | A group of amylolytic enzymes that cleave starch, glycogen, and related alpha-1,4-gluca... more | 1 | 1 | Details |