Methadone side effects

Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.

• Drowsiness
• Nausea and vomiting
• Dry mouth
• Constipation
• Difficulty passing urine
• Slow, shallow breathing (respiratory depression)
• Low blood pressure (hypotension)
• Feeling of unease, restlessness, agitation or being unwell
• False perceptions of things that are not really there (hallucinations)
• Mood changes
• Decreased heart rate
• Awareness of your heartbeat (palpitations)
• Rash or itching
• Decreased sex drive
• Contracted (pinpoint) pupils
• Addiction to the medicine (dependence)
• Excessive sweating
• Abnormal heartbeats (arrhythmias)

The side effects listed above may not include all of the side effects reported by the drug's manufacturer.