can b12 injections cause skin problems Acne] Beware of vitamin B12! : r/SkincareAddiction Vitamin B12 Side Effects

They measured the full B12 body count of four people and found it to be 780 to 1,350 g of B12 with a daily loss of 0.12% for a maximum loss of 1.6 g per day or 11.2 g per week

The mcg amount depends on vial strength and reconstitution volume

In the U.S., the average daily dietary intake of B12 is a mere 0.0034 mg (3.4 g), underscoring the need for patience and consistent supplementation

a) 99212-25, 90460, J3420

they're unregulated, potentially impure, and lack dosage precision, posing health risks like bacterial contamination or heavy metals.[44][45][46] Unregulated online sources amplify dangers with potential counterfeits, unknown additives, or legal violations, as they're not FDA-approved and may lead to adverse effects or inefficacy.[47][48][49] Prioritize compounding pharmacies for reliable, compliant options