Does anyone get heart palpitations from protein shakes?
Explanation: the last few weeks, sometimes I will feel my heart racing for a few beats and then going back to normal. Really unpleasant and worrying feeling. Doesn't happen the whole day, I suppose more when I am at rest. Also doesn't seem to cause shortness of breath or unusual tiredness. I remember having similar symptoms while taking sinus medication like Sinutab, which has phenylalanine in it. The whey powder that I use has phenylalanine in it, which made me suspect that is the cause. Now I should note, phenylalanine is an essential amino acid, and almost all animal protein contains it. My hypothesis is that consuming whey protein in such large amounts means I have been getting more phenylalanine than I can tolerate.
Anyway, I had my last protein shake on Friday and I still had heart palpitations last night. Admittedly, they seemed less severe than normal. I will see if I have any tonight.
No I'm not on any gear or any other banned substances, nor am I using stimulants (other than caffeine) or any weight loss medications or supplements that interfere with your metabolism.