Heart palpitations. Side effect of meds?

[MisterGoodfella]

I'm on pepcid and sulfamethoxazole because of stomach issues and infection in my finger. I took my 2nd pill it says twice daily so one at morning and one mid night like 8-9 and I've been having palpitations and pain on my left chest. Hopefully it goes away soon and has anyone ever had these side effects before?

[CFS56]

There is a possiblity for Bactrim (the antibiotic you are taking) to cause heart palpitations.  If you are having heart palpitations accompanied by chest pain, it would probably be a good idea to call your doctor.

[tom_h]

"Stomach issues", like acid reflux issues?  If that is the case, I'd consider that problem more than the treatment you're taking for it.  There is a link between stomach issues like GERD, and arrhythmia.