[specialist]

Yes and:

I take magnesium (Mg) at bed time. I believe it helps reduce muscle cramping, improving my sleep.

TIL There are many compounds avail OTC. The most common Mg-citrate upsets my tummy. After trying a few variataions, I settled on Mg-glycinate, which is also reasonably priced (vs say Mg-orotate).

YMMV. Please consult your doc. Adverse effects, drug interactions, etc.

Best, of course, is a nice hot bath with epsom salt. But that's not always practical.