how long does zolpidem stay in your system
Peak levels and half life of Ambien. Ambien is absorbed through the GI tract rapidly and completely. The peak level of Ambien, 200 ng/mL, is reached about 30 minutes after taking a normal dose of 20 mg. Ambien peak time for effects, is between 1.5-2 hours, and up to 4 hours for Ambien CR.Typically, the half life of Ambien is about 2 hours in healthy adults. In older patients and those with cirrhosis, the half life can be doubled, taking as long as 4 hours.eak levels and half life of Ambien. Ambien is absorbed through the GI tract rapidly and completely. The peak level of Ambien, 200 ng/mL, is reached about 30 minutes after taking a normal dose of 20 mg. Ambien peak time for effects, is between 1.5-2 hours, and up to 4 hours for Ambien CR.