So I’ve typically used ON ZMA, great product. A while back Amazon was out of stock, so I bought MetRx. Turns out MetRx uses cheap magnesium oxide. ON ZMA back in stock, I order it, lo and behold…now they’re using oxide, too as part of the magnesium! Ugh!
I bought some magnesium citrate today, I’m considering taking like 250mg on top of the ZMA (I take 4 pills not 3, always have). Any potential negative side effects aside from waking up to crap my brains out (which I do anyway)?