where to administer b12 injection How Use These 4 IM Spots Safely Injecting B12 into fat: 4

If you have tried oral B12 before and felt no change, this may be part of the reason, and it is worth mentioning to your provider

Common side effects are usually mild and temporary

Signs and symptoms of vitamin B12 deficiency signs may include: Weakness or fatigue Pale skin Appetite loss Weight loss Palpitations Numbness and tingling Poor concentration Infertility Depression Memory impairment Sore mouth or tongue Disturbed sleep Frequent infections What are the side effects of a B12 shot

It is sometimes used to improve muscle performance in animals like racing horses, and it is also used to increase milk production in dairy cows