I had considered heartburn and indigestion as I know they can be confused with hypertension or heart attack symptoms, but having suffered from heartburn for a number of years I remain convinced that this is not the case here.
Today I noticed that the amino acid profile for my whey has glutamine/glutamic acid listed at 17.2g per 100g, much higher than the typical 3.4g. Crystalised glutamic acid is MSG, which many people claim sensitivity to.
Walking back in time I made the switch to this powder roughly the same time my symptoms started, I did not see the connection since I was busy working out a dehydration issue…I’m off to the store to buy my old brand of protein and will report back with my highly unscientific drink and tell results!
Update 1 - So I switched back to the whey I had used previously and after consuming 1/3 of my daily batch I have had no noticeable side effects. The increased heart rate, anxiety and temperature rise are non-existent.
PVL Sport Whey - Vanilla, was the protein causing the issues and Whey Gourmet - Vanilla is the one that is non reactive for me. While there are minor differences in ingredients there is a significant difference in their amino acid profiles.
Note: The difference isn’t as large as I had thought as the Whey Gourmet value of 3.4g glutamic acid seems to be for a 30g serving.
If anyone else can see anything in those ingredients that I am missing which might cause this type of reaction I would love to hear your thoughts!