Escitalopram - Did the company changed the formula for this pills since they changed the shape?

Hi, Nasrin!
Are you taking the brand name Lexapro or a generic? If generic, could you have gotten a batch from a different manufacturer than you're used to?
If you look on your pill vial it should have the name of the manufacturer and you could try contacting them or even just ask your pharmacist. They would know if there was a formulation change (not likely if it's the brand name) or whether it's a different generic.

I really dont think so. No change in formula in my opinion.

There are many, many, companies that make this. I like the round white ones the best. I'm not sure of the brand. For me, the oval ones don't feel like they work as well. It just depends on which ones you get used to I guess. Different companies use different fillers that might affect us differently.