Do not use methadone ifyou are allergic to it, or if you have:
breathing problems or severe asthma
a blockage in your stomach or intestines
To make sure methadone is safefor you, tell your doctor if you have ever had:
breathing problems, sleep apnea
brain tumor, a head injury, or seizures
heart problems, long QT syndrome (in you or a family member)
alcohol or drug addiction, or mental illness
urination problems
problems with yourgallbladder, pancreas, or thyroid
Methadone can causea fatal heart rhythm disorder. If you have a headache with chest pain, severe dizziness, or fast or pounding heartbeats, call your doctor right away. Your doctor may check your heart function during treatment.
If you use opioid medications while pregnant, your baby may become dependent on the drug. This can cause fatal withdrawal symptomsin the baby after birth. Babies born dependent on opioids may require medical care for several weeks.
Do not breastfeed. Methadone can enterthe breast milk and cause drowsiness, breathing difficulties, or death in a nursing baby.
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