Calculates fentanyl dosing for ICU analgesia. Continuous infusion: 25–200 mcg/h (0.5–2 mcg/kg/h). Bolus for acute pain: 25–50 mcg IV, onset 1–2 minutes, duration 30–60 minutes. Half-life is short (~30–60 min) with single doses but becomes prolonged (>10 hours) with continuous infusion due to adipose and muscle tissue accumulation. Daily sedation interruptions improve outcomes.
Use the full interactive calculator below, or