Before L-carnitine, S-5-HT was markedly low in both CFS (83 (57) 36 nmol/l), and hypothyroidism (112 (84) 63 nmol/l)
Additionally, some research has linked low vitamin B-12 levels to female infertility, whereas higher levels may improve fertility in women receiving therapy for infertility
Acta 753 , 399410 (1983)
Why Does Dosage Matter in Minimizing B12 Lipo Injection Side Effects
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