Table 7. Varenicline
| Brand | Dose | Side Effects | Warning/Precaution | |
| d = day; Rx = prescription; wk = week. | ||||
| Rx | Chantix | 0.5 mg/d, d 1–3; 0.5 mg twice a d, d 4–7; then 1.0 mg twice a d through wk 12 | Nausea, insomnia | Risk of toxicity greater in patients with impaired renal function |
| Not tested in children and pregnant women | ||||
