Complete adverse effect profile including incidence rates and management
Important Safety Information
This is not a complete list of all possible side effects. Contact your healthcare provider if you experience any unexpected symptoms. For serious or life-threatening side effects, seek emergency medical attention immediately.
Constipation
Sweating
Drowsiness
Headache
Dizziness
Weight gain
Sexual dysfunction
Respiratory depression
QT prolongation
Arrhythmias
Overdose
Withdrawal symptoms
Anaphylaxis
Stevens-Johnson syndrome
Like all medications, Methadone can cause side effects. However, not everyone who takes this medication will experience them. Many side effects are dose-dependent and may improve as your body adjusts to the medication. Others may require dose adjustment or medical attention.
Contact your healthcare provider promptly if you experience:
Seek immediate emergency medical care if you experience signs of: