I developed myoclonus and syncope as a side effect of Cymbalta (duloxetine). It is a rare side effect, and I didn't develop it until after I had taken Cymbalta for SIX YEARS. It took 18 months before we figured out the culprit was Cymbalta.

The key is to check your meds for RARE SIDE EFFECTS on webmd or a similar site.

I had every test in the book, and saw a specialist in epilepsy (ruled out immediately), I even insisted on an MRI of my brain.

But it was the Cymbalta and then it turned out I couldn't take ANY SSRI or SNRI without myoclonus and syncope.

And I had taken Prozac beginning in 1988, and other similar drugs for almost 30 years before the problem began in 2016.

Best wishes in finding out what causing your syncope, elizabj.

Regards, ElaineD