l-carnitine pregnancy l carnitine increase sperm count Improved Rates with Plus Acetyl L-Carnitine but you also get some from food Levocarnitine Use During Pregnancy

That said, the clearest human evidence so far is a small pilot where three months of B12 brought deficient older adults strength up to match non-deficient peers promising, but larger trials are the next step, especially on whether B12 supplementation helps people who arent prone to deficiencies

Plant Physiol Biochem 109:7283 Smith FW, Ealing PM, Hawkesford MJ, Clarkson DT (1995) Plant members of a family of sulfate transporters reveal functional subtypes

76 Food and Agriculture Organization of the United Nations (2024)

It does this by regulating the hormones that cause hunger, making you feel full after eating much less food than youre accustomed to