Hi @inspect28, welcome to Mayo Clinic Connect. @elizm, @jlpdurham526 my wife gets leg cramps at night when she doesn't drink enough water and gets a little dehydrated so I think there is a little truth to what you both say. I think this article puts it in perspective:

Harvard Women's Health Watch - Will tonic water prevent nighttime leg cramps?
-- https://www.health.harvard.edu/bone-and-muscle-health/will-tonic-water-prevent-nighttime-leg-cramps

My thoughts are if you know something helps you then it's a good thing and I would keep doing it. The caveat is that it may not help everyone.