How long do B12 injections take to work
Due to the nature of these products, all sales are final and we cannot accept standard returns
Baseline liver function tests and biomarkers of oxidative stress provide context for supplement selection and monitoring
It seems that the efficacy of B9 supplementation is dose-dependent such that, the combination of 1 mg/d folic acid, 25 mg/d vitamin B6, and 400 g/d B12 during 6 months did not have any significant effect on serum homocysteine and symptoms of migraine (74)
The usual recommended maintenance dose remains 2.4 mg
Now, even as supply stabilizes and FDA shortage designations are lifted, compounded versions remain active in the market, raising critical questions around regulatory oversight, market sustainability, and long-term implications for branded manufacturers