hi I have gilberts syndrome and iv recently started a whey protein powder supplement fot my gym work. However since using it I have felt increased tiredness and leg muscle weakness. also find my bowel habbits have changed from sometimes loose to slight constipation.  just wondered your thoughts on this please and if I should continue with the shakes?
Hi, Gilbert's syn Chat Doctor.  The whey protein powder supplement might be the cause of your bowel habits changes and having muscle weakness.  So, if it was your physician who advised taking whey supplement, I'd suggest consulting with him/her for another alternative.  If you took it by your own, then, I suggest stopping the whey protein supplement for some days. If no improvement, then, consult GI for further evaluation.  Wish you health!