What are the possible side effects of clonazepam?
Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Clonazepam can slow or stop your breathing, especially if you have recently used an opioid medication or alcohol. A person caring for you should seek emergency medical attention if you have slow breathing with long pauses, blue colored lips, or if you are hard to wake up.
Tell your doctor right away if you have new or sudden changes in mood or behavior, including new or worse depression or anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, more active or talkative, or have thoughts about suicide or hurting yourself.
Call your doctor at once if you have:
- new or worsening seizures;
- severe drowsiness;
- weak or shallow breathing;
- unusual changes in mood or behavior;
- confusion, paranoia, nightmares, hallucinations;
- thoughts of suicide or hurting yourself;
- unusual or involuntary eye movements.
Drowsiness or dizziness may last longer in older adults. Use caution to avoid falling or accidental injury.
Common side effects may include:
- drowsiness, dizziness;
- feeling tired or depressed;
- memory problems; or
- problems with walking or coordination.
After you stop using clonazepam, get medical help right away if you have symptoms such as: unusual muscle movements, being more active or talkative, sudden and severe changes in mood or behavior, confusion, hallucinations, seizures, suicidal thoughts or actions.
Some withdrawal symptoms may last up to 12 months or longer after stopping this medicine suddenly. Tell your doctor if you have ongoing anxiety, depression, problems with memory or thinking, trouble sleeping, ringing in your ears, a burning or prickly feeling, or a crawling sensation under your skin.
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.