DRUG | ADVERSE EFFECT | PATIENTS WHO EXPERIENCED EFFECT (%) |
Amitriptyline* | Constipation | 14 |
Dizziness | 28 | |
Dry mouth | 90 | |
Somnolence | 66 | |
Capsaicin cream (Zostrix) | Cough | 8 |
Skin irritation | 54 | |
Duloxetine (Cymbalta) | Constipation | 9 |
Diarrhea | 6 | |
Fatigue | 9 | |
Headache | 10 | |
Nasopharyngitis | 6 | |
Nausea | 22 | |
Somnolence | 8 | |
Sweating | 6 | |
Gabapentin (Neurontin) | Confusion | 7 |
Diarrhea | 10 | |
Dizziness | 24 | |
Headache | 10 | |
Nausea | 8 | |
Somnolence | 20 | |
Lidocaine 5% patch (Lidoderm) | No adverse effects significantly different from placebo | — |
Opiates | Constipation | 33 |
Dizziness | 21 | |
Nausea | 33 | |
Somnolence | 29 | |
Vomiting | 15 | |
Pregabalin (Lyrica)† | Dizziness | 7 to 28 |
Edema | 6 to 16 | |
Somnolence | 5 to 13 | |
Weight gain | 4 to 9 | |
Tramadol (Ultram) | Constipation | 22 |
Headache | 17 | |
Nausea | 23 | |
Somnolence | 12 |