| Adenosine Triphosphatases, antagonists & inhibitors | Not Available | 3 | 3 | Details |
| Adenosine Triphosphate | Not Available | 1 | 43 | Details |
| Adenosine Triphosphate-Citrate Lyase Inhibitor | Not Available | 1 | 7 | Details |
| Adenosine Triphosphate-Citrate Lyase Inhibitors | Not Available | 1 | 7 | Details |
| Adenosine, antagonists & inhibitors | Not Available | 1 | 21 | Details |
| Adenovirus Vaccines | Not Available | 2 | 0 | Details |
| Adenylyl Cyclase Inhibitors | Compounds that bind to and inhibit the action of ADENYLYL CYCLASES. | 1 | 2 | Details |
| Adhesives | Not Available | 1 | 1 | Details |
| Adipates | Derivatives of adipic acid. Included under this heading are a broad variety of acid for... more | 1 | 1 | Details |
| Adipokines | Polypeptides produced by the ADIPOCYTES. They include LEPTIN; ADIPONECTIN; RESISTIN; an... more | 2 | 2 | Details |
| Adiponectin | Not Available | 0 | 0 | Details |
| Adjuvants | Not Available | 8 | 106 | Details |
| Adjuvants, Anesthesia | Agents that are administered in association with anesthetics to increase effectiveness,... more | 20 | 176 | Details |
| Adjuvants, Immunologic | Substances that augment, stimulate, activate, potentiate, or modulate the immune respon... more | 106 | 314 | Details |
| Adjuvants, Pharmaceutic | Agents that aid or increase the action of the principle drug (DRUG SYNERGISM) or that a... more | 1 | 32 | Details |
| Administration, Topical | Not Available | 5 | 37 | Details |
| Adoxaceae | A plant genus of the family Adoxaceae. | 1 | 0 | Details |
| ADP Ribose Transferases | Enzymes that transfer the ADP-RIBOSE group of NAD or NADP to proteins or other small mo... more | 3 | 4 | Details |
| Adrenal Cortex Hormones | A group of pharmacologic activities, effects on living systems and the environment, and... more | 190 | 1241 | Details |
| Adrenal Cytotoxic Agents | Not Available | 1 | 13 | Details |
| Adrenals | Not Available | 20 | 213 | Details |
| Adrenergic Agents | Drugs that act on adrenergic receptors or affect the life cycle of adrenergic transmitt... more | 180 | 1186 | Details |
| Adrenergic Agonists | Drugs that bind to and activate adrenergic receptors. | 114 | 583 | Details |
| Adrenergic alpha-1 Receptor Agonists | Compounds that bind to and activate ADRENERGIC ALPHA-1 RECEPTORS. | 27 | 232 | Details |
| Adrenergic alpha-1 Receptor Antagonists | Drugs that bind to and block the activation of ADRENERGIC ALPHA-1 RECEPTORS. | 61 | 1086 | Details |