I recently tried it, but could only tolerate it for a couple days. It worked well for my primary symptom (tachycardia), but gave me a headache and made me feel depressed I don't think that's a common side effect though. I got mine through a neurologist and ordered it online, but I know how tedious it is going from doctor to doctor to find one willing to try prescribe non standard meds. I don't think it's getting FDA approved anytime soon, though. I wish I could send you the rest of mine to try to possibly save you the expense!