What is the typical peak effect time for hydromorphone?

What is the typical peak effect time for hydromorphone?

• A. 10-20 mins
• B. 30-90 mins
• C. 2-4 hours
• D. 4-6 hours

Answer: (B)

Peak effect time is the period after dosing when the maximal analgesic effect is reached. For hydromorphone given by routes typically used in practice (such as IM or oral), this peak generally occurs about 30 to 90 minutes after administration. The 10–20 minute window corresponds to the onset of action for some IV administrations, not the peak. The 2–4 hour and 4–6 hour options reflect duration of effect rather than the time to reach peak analgesia. If hydromorphone is given intravenously, the onset and peak can occur sooner, often within ~15–30 minutes, but for non-IV routes 30–90 minutes is the best estimate for peak effect.

Peak effect time is the period after dosing when the maximal analgesic effect is reached. For hydromorphone given by routes typically used in practice (such as IM or oral), this peak generally occurs about 30 to 90 minutes after administration. The 10–20 minute window corresponds to the onset of action for some IV administrations, not the peak. The 2–4 hour and 4–6 hour options reflect duration of effect rather than the time to reach peak analgesia. If hydromorphone is given intravenously, the onset and peak can occur sooner, often within ~15–30 minutes, but for non-IV routes 30–90 minutes is the best estimate for peak effect.