Ambien may cause a severe allergic reaction. Stop taking it and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Ambien will make you fall asleep. Never take this medication during your normal waking hours, unless you have a full 7 to 8 hours to dedicate to sleeping.
Some people using this medicine have engaged in activity such as driving, eating, or making phone calls and later having no memory of the activity. If this happens to you, stop taking Ambien and talk with your doctor about another treatment for your sleep disorder.
Ambien can cause side effects that may impair your thinking or reactions. You may still feel sleepy the morning after taking the medication. Until you know how this medication will affect you during waking hours, be careful if you drive, operate machinery, pilot an airplane, or do anything that requires you to be awake and alert. Do not drink alcohol while you are taking this medication. It can increase some of the side effects of Ambien, including drowsiness. This medication may be habit-forming and should be used only by the person it was prescribed for. Ambien should never be shared with another person, especially someone who has a history of drug abuse or addiction. Keep the medication in a secure place where others cannot get to it.
It is dangerous to try and purchase Ambien on the Internet or from vendors outside of the United States. Medications distributed from Internet sales may contain dangerous ingredients, or may not be distributed by a licensed pharmacy. Samples of this medication purchased on the Internet have been found to contain haloperidol (Haldol), a potent antipsychotic drug with dangerous side effects.