Since its approval, Ambien has been found to cause several side effects. Some of these, such as drowsiness, make sense and are unfortunate side effects of most prescription insomnia treatments. Other side effects, such as sleepwalking or sleep driving, have been found to be more common with Ambien than with benzodiazepines and much more dangerous.
By reducing or stopping consumption of caffeine and alcohol while taking Ambien, some side effects can be lessened. Even hours later, these drugs can interact with Ambien. It is also important for physicians prescribing Ambien to know if their patient has a history of mental health issues, such as depression, thoughts of suicide, or substance abuse, in order to avoid some of the more serious side effects.
Even if an individual does not begin to abuse, become addicted to, or become dependent on Ambien, they can still suffer side effects of the medication. However, nonmedical use or physical dependence on Ambien can make side effects worse.
- Drowsiness or tiredness, especially during the day
- Dizziness or lightheadedness
- Feeling “drugged”
- Unsteady gait; loss of balance or coordination
- Stomach problems, nausea, vomiting, and diarrhea
- Changes in appetite
- Shaking or tremors
- Dry mouth or throat
- Muscle cramps or aches
- Joint or back pain
- Redness in or around the eyes
In large doses, especially when taken for nonmedical or recreational use, Ambien can lead to side effects indicating intoxication, including:
- Confusion or cognitive difficulties
- Acting drunk
- Visual changes
- Nausea and vomiting
- Euphoria while intoxicated
- Loss of coordination
- Memory loss
When an individual becomes addicted to Ambien, they are more likely to take the drug for longer than prescribed, without a doctor’s oversight, and for nonmedical reasons. Long-term side effects of Ambien abuse include:
- Loss of effectiveness: The person will develop a tolerance to the drug over a short period of time, so they may begin escalating their dose in order to feel the original effects, including euphoria.
- Dizziness when discontinued: One study found that people who had taken Ambien for 28-35 nights in a row, with doses up to 10 mg, felt dizzy when they stopped taking the medication.
- Lethargic, drugged feeling: People who took Ambien for 35 nights consecutively reported feeling drugged, slow, lethargic, or fatigued.
Withdrawal from Ambien
Because Ambien is a potent medication, a person can develop a physical dependence on it without inherently becoming addicted. Physical dependence (when the body needs the medication to feel normal) and tolerance (when the body needs more to achieve the original effect) are used as measurements of potential addiction, but they are not the only defining symptoms.
Dependence is what causes withdrawal symptoms. Effects of Ambien withdrawal include sweating, shaking, nervousness, rebound insomnia, and muscle cramps. Sometimes, a person can develop seizures, especially if they have taken or abused Ambien for a long time and at high doses.
FDA Changes to Ambien Doses
The FDA found that doses of Ambien higher than 10 mg were more likely to lead to addiction, dependence, and tolerance. The federal regulatory agency lowered the recommended dose for healthy adults in 2013 after several complaints about side effects of the drug, including very serious problems with parasomnias (e.g., walking, eating, driving, and having sex while asleep). In fact, the most common reported complaints about Ambien include daytime drowsiness (also during driving), dizziness, hallucinations, euphoria, agitation, and sleepwalking. These can all become dangerous to the individual, leading to serious falls, dissociation from reality, anxiety, and performing actions without remembering them. There are several anecdotal reports about people falling from balconies, causing car accidents, getting DWI tickets or arrests, and ingesting dangerous, non-food items while on Ambien.
In addition to the dangerous side effects, Ambien overdose has led to thousands of emergency room visits every year. The Substance Abuse and Mental Health Services Administration (SAMHSA) reported that 20,793 ER visits in 2010 were related in some way to Ambien, with 37 percent of those visits due to Ambien alone. Even more serious, a 2010 study examined records of people in Pennsylvania between 2002 and 2006: about 10,000 used Ambien, while 23,500 did not. About 1 percent of the non-Ambien users died in those years while 6 percent of Ambien users died, suggesting that Ambien generally increased the risk of death.