atrial fibrillation
"This medication (Flecainide) was prescribed as well as Cardizem CD for chronic A-Fib although nothing was found wrong with my heart, electrical or plumbing. Serious side effects occurred and I stopped taking them, took me three months to recover from the meds.  Did my own research and learned  that Fosamax was actually responsible for my A-Fib.  The Doctors at the Heart Hospital didn't have a clue.  Has been four years now and no A-Fib and absolutely no meds!  This was a nightmare experience!  Female, 74 years old."