The drug label for Ambien, provided by the U.S. Food and Drug Administration (FDA), states that patients should take no more than 10 milligrams … Negative effects of Ambien can begin to manifest at doses as low as 70 milligrams, and doses higher than that are considered to be a lethal dose … 1994 Deaths caused by Ambien alone are rare. A lethal dose of Ambien is above 4,000 mg, which is approximately 400–800 times the average prescription … 1996 Fatal Ambien overdoses by zolpidem alone are rare, as lethal consumption normally exceeds 4,000 mg — about 400–800 times higher than standard … Doses exceeding 50–100 mg can result in more serious symptoms, such as severe sedation, respiratory depression, or even a coma. While there is … An Ambien overdose causes extreme drowsiness, loss of motor coordination, unconsciousness, respiratory arrest, and death. When combined with alcohol or other … There is no reliable single lethal dose of Ambien. Fatal outcomes are uncommon with zolpidem alone but can occur, especially at very high doses …