Does escitalopram cause heartburn?

Hi, Tsatouf!
It's uncommon but has been reported in a small number of users:
"Uncommon (0.1% to 1%): Abdominal cramp, abdominal discomfort, belching, bloating, hemorrhage heartburn"
If you just started the medication it may be a side effect that will resolve on it's own in a week or two. Lots of milk and soda crackers with your medication. If it's lasted longer than two weeks notify your doctor and ask your pharmacist for a recommendation for an OTC remedy
Best wishes, Wildcat

.