Not long: Based on the omg! i would recommend going to the er! the half life of hydromorphone is about 2.5 hours. This means that the concentration of the total dose take is cut in half by this time. The higher the total dose the higher the blood level is. At high levels even cutting it in half may still have serious effects. Seek medical attention.
Answered 3/26/2013
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A doctor has provided 1 answer
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