Protocol: Morning: Matrixyl serum, moisturizer, SPF
In the blood stream as nicotinic acid, it can cause skin flush and this reaction is actually responsible for the tolerable upper limit (UL) for niacin at 35 mg/d for adults in US (20)
Obesity Reviews , 21(5), e13058
But to ensure that you are not wasting your money at the very least, or endangering your body at worst, lets examine the efficacy of vitamin B-12 injections for weight loss
doi:10.1016/j.phrs.2020.105413 Kronenberg RM, Beglinger S, Stalder O, et al
Key Features 1500mcg methylcobalamin per ampoule Active form of vitamin B12 Designed for efficient absorption Supports normal nervous system function Helps maintain healthy vitamin B12 levels Injectable ampoules for IM/IV use Available in multiple pack sizes Suitable For Individuals with low or deficient vitamin B12 levels Those experiencing fatigue associated with B12 deficiency Vegetarian or vegan diets Individuals seeking an alternative to oral supplementation Product Information Active Ingredient: Methylcobalamin Strength: 1500mcg per ampoule Form: Injectable ampoules Administration: Intramuscular (IM) or intravenous (IV) use Expiry Date: 07/2027 Needles and syringes are not included