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Doxycycl
After my pacemaker was put in last Sunday, my Dr prescribd Doxycycl 100 mg, 2 per day for 5 days.  Now I a getting a fast, unregular heartbeat.  Is this one of the side effects of this medicine?
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367994 tn?1304957193
Welcome to the Heart forum:

I researched for side effects with Doxycycl and don't find anything that would be related to any heart issues.  However, there may be an interaction with other medciations, etc., concomitant health issues, etc. so the medication may be secondary to another condition or medication.  For a definitive answer, you should contact your doctor as irregular heartbeats could be serious.  

Thanks for sharing and if you have any further questions or comments  you are invited to respond.  Take care.

Ken
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