You will just be withdrawing less or more product out of the vial to get the dosage you want
(PubMed) Levy MM, Fink MP, Marshall JC, et al
Taking your dose on the same day each week, at approximately the same time, produces more stable blood levels than erratic scheduling
Alternatives to B12 Vitamin Shots and Dietary Supplements Several alternatives exist for those who prefer not to take injections to maintain adequate Vitamin B12 levels
Benefits of B12 Injections: Boosting energy levels to combat fatigue Enhancing metabolism for improved fat-burning Supporting red blood cell production for better oxygen delivery Helping address B12 deficiencies quickly and effectively Bypassing the digestive system for maximum absorption Complementing weight-loss efforts by increasing calorie-burning efficiency Improving focus, mood, and mental clarity Supporting overall health and well-being during your weight-loss journey How Do B12 Injections Promote Weight Loss
FSA tax benefits are administered by your job