Temazepam may cause a severe allergic reaction. Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; nausea, vomiting; swelling of your face, lips, tongue, or throat.
Temazepam can slow or stop your breathing, especially if you have recently used an opioid medication, alcohol, or other drugs that can slow your breathing. A person caring for you should seek emergency medical attention if you have weak or shallow breathing, if you are hard to wake up, or if you stop breathing.
Call your doctor at once if you have:
confusion, agitation, hallucinations;
depressed mood; or
thoughts of suicide or hurting yourself.
Some people using this medicine have engaged in activity such as driving, eating, making phone calls, or having sex and later having no memory of the activity. Tell your doctor if this happens to you.
The sedative effects of temazepam may last longer in older adults. Accidental falls are common in elderly patients who take benzodiazepines.
Common temazepam side effects may include:
day-time drowsiness or "hangover" feeling;
headache;
dizziness, tiredness;
nausea; or
feeling nervous.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Temazepam side effects (more detail)
