Not to freak out or anything, but get thee to a doctor. This does not seem good to me. BP? I very seriously doubt that protruding veins have anything to do with dietary minerals. Cramps, IME, have nothing to do with hydration either. Try 200mg of potassium in the AM and then another 200 at bedtime. That's not enough to do any harm. A banana has more, but the pills help my wife's cramps more than a banana does. Beats me.

Glucosamine has worked very well for my wife an I. The sulfate, not the hydrochloride which is ineffective.