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Elevated heart rate fast, pounding, or uneven heart rate, chest pain sweating, general ill feeling are side effects of amitriptyline .You should consult your physician regarding these.
Do not stop using amitriptyline without first talking to your doctor. You may need to use less and less before you stop the medication completely. Stopping this medication suddenly could cause you to have unpleasant side effects. It may take up to 4 weeks of using this medicine before your symptoms improve.
Refer http://www.drugs.com/MTM/amitriptyline.html
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