@melclarity the mskcc website is worth a look and recommended by BCNA .They are a cancer hospital in NYC and part of their brief is ongoing research into natural supplements .
Here is the web address if you haven’t got it
www.mskcc.org/cancer-care/patient-education/herbal-remedies-and-treatmentIt’s not just herbs but vitamins , minerals - very comprehensive and thorough .
I know from my pregnancies and sons sporting injuries magnesium is very good for muscle cramps having had it prescribed by our gps.
I’m not a fan of Dr Google unless an authoritative source like a govt sponsored health site or recognised medical journal. Scarey how much trust is placed in the health section of supermarkets these days - it’s such a huge unregulated industry.