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Does methadone cause chest pain and shortness of breath

I have been taking 35 mg of methadone for about a month or so. My attendance was poor so i couldnt increase my dose now im having chest pain and shortness of breath when time to dose.
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It can. You need to contact your prescribing doctor ASAP.
Methadone, like all opiates can cause respiratory suppression. It has an extremely long half life, and because of this, 24-36 hrs after your last dose, half that amount is still in your bloodstream.
Methadone can also cause or worsen heart rhythm problems, specifically prolonged Q-T SYNDROME and can lead to further problems.
What should you do?
Contact YOUR DOCTOR IMMEDIATELY and DO NOT take any more methadone unless and until instructed to do so by your doctor.
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