I have an electrolyte supplement and the capsules are made of hypromellose, which is a cellulose compound.

I noticed when I take those I feel shitty, get contact dermatitis within 8 hours and gum inflammation almost immediately.

I thought it was the electrolytes but nope, it’s the god damn vegetable capsule. I have no reaction to gelatin capsules but the hypromellose gets me. Bizarre.