I've been on Lexapro for 10 years. 20 mg. Overall it has been a great med. about 3-4 months ago I started having bouts of anxiety and depression again. I've had rough days. My doctor suggested that I go to 30mg. Is this a common dose today? and do you think that it will help? I know the FDA only approves this up to 20 mg. What type of side effects can I expect going beyond the manufactures max dosage? I've read about Serotonin syndrome and definitely do not want to risk that. Thank you.