I'm off lexapro due to rapid weight loss but I was on it for about 6 months starting from 5mg then 10mg. 10mg is min therapeutic dose for anxiety.

I felt nauseous too for about 2 weeks. My doctor said that I could have started with 2.5mg, then 5, then 7.5mg then 10mg.

Maybe give it a couple of weeks for your body to adjust and see?