Escitalopram
"Lexapro was a miracle drug for me as far as treating my severe health anxiety and PTSD.  It gave me my life back. I can truly say I was my normal self 98% of the time. However it caused me to have extreme muscle tension and headaches. I was even diagnosed with TMJ and was sleeping with a mouthguard at night. Weaning off Lexapro was horrific for me. It took a good 3 months for all the withdrawal symptoms to subside. Thankfully the headaches and stiff jaw got better as well. I'm sad I can't take Lexapro anymore. It saved my life. I'm about to start on Prozac. We'll see what happens."