Berberine is generally well-tolerated but may cause digestive upset, headache, or rash in some people
Its part of a class of banned substances called Non-Approved Substances, a catch-all for potentially performance-enhancing drugs that arent approved by any government regulatory authority
If you have a condition like chronic fatigue syndrome, anemia, or nerve damage (often related to diabetes or alcohol use), more frequent injections may be part of your treatment plan, but only under a licensed professionals care
According to recommendations from nutrition institutes and the World Health Organization (WHO), the daily Recommended Dietary Allowance (RDA) is as follows: Infants 06 months: 0.4 mcg Infants 712 months: 0.5 mcg Children 13 years: 0.9 mcg Children 48 years: 1.2 mcg Children 913 years: 1.8 mcg Teenagers 14+ years and adults: 2.4 mcg Pregnant women: 2.6 mcg Breastfeeding women: 2.8 mcg Receiving adequate daily Vitamin B12 helps reduce the risk of anemia, fatigue, and neurological problems, while supporting optimal metabolic and overall bodily function