I'm not a doctor/nutritionist/medical person of any kind; however, I have had to deal with some minor
reactions in my life. This sounds like a symptom of an allergic reaction; if you're finding a symptom that is only present when that particular substance is in your system, you may be allergic to something in the substance.
Have you noticed this particular reaction to any other protein product? You may need do try a different
protein; maybe a soy-based or maybe rice-based? There are some products in these ranges. You may also just have to ignore protein shakes (I know, it's bad but so it may be) and go purely food