Table 2.
Renal impairment | Should be used with caution in patients with impaired renal function |
Hepatic impairment | Should be used with caution in patients with mild hepatic dysfunction; contraindicated in patients with moderate and severe hepatic impairment |
Pregnancy, labor, and delivery | Contraindicated during pregnancy, labor, and delivery, due to impaired uterine contractility and the risk of neonatal respiratory depression |
Nursing women | Safety in infants and newborns has not been studied; therefore, it is contraindicated in nursing mothers |
Pediatric population | Safety and effectiveness in pediatric patients not established |
Geriatric population | Dosage should be adjusted to the lowest dose, which will achieve satisfactory symptom relief with acceptable side effects |
Abbreviation: PR, prolonged release.