| Reaction | |
|---|
| Abnormal dreams (65) | |
| Acute disseminated encephalomyelopathy (4) | |
| Ageusia (taste loss) (54) | |
| Aggression (45) | |
| Agitation (140) | |
| Akathisia (56) | |
| Allodynia (3) | |
| Altered mental status (6) | |
| Amnesia (80) | |
| Amyotrophic lateral sclerosis (2) | |
| Aneurysm (7) | |
| Anorexia (291) | |
| Anorgasmia (12) | |
| Anosmia (17) | |
| Antiphospholipid antibody syndrome (5) | |
| Anxiety (265) | |
| Aphasia (12) | |
| Arachnoiditis (6) | |
| Aseptic meningitis (35) | |
| Attention disturbances (1) | |
