Benefits can include: Increased daily energy and reduced fatigue Improved mood, focus, and concentration Boosted metabolism for weight management support Enhanced immune function Healthier skin, hair, and nails Unlike oral supplements, B12 shots deliver nutrients directly into your system , ensuring your body gets the full benefit
In fact, the Institute of Medicine recommends that adults aged 51 and over take vitamin B12 shots because they are more bioavailable than vitamin B12 found in oral supplements and foods
Gastrointestinal surgery can also affect B12 absorption
Ensuring you take B12 only after a full meal to aid absorption
[Accessed 21 May 2026] A Randomized, Controlled Trial of 3.0 mg of Liraglutide in Weight Management
Common side effects include mild injection site reactions (such as pain, redness, or swelling), headache, flushing, dizziness, and nausea