Hello I am 24 years old and am currently in step one(CBS+) of fixing my methylation cycle.. my doc tried me on glutamine and seacure for a while to heal my gut- i stopped it 3 or 4 days ago because of excitotoxity systoms. I have since been having a consistently 'heavy' heartbeat, where i feel a little tightness around my heart and can feel the heartbeat without putting my ahnd over it. I am scared, has anyone had these symptoms after stopping supplements that supply glutamates? I have been taking GABA for the excitotoxity. Anybody help please, as i am waiting to get in to see my doctor.