reaction to b12 injection Feeling worse after Injection: Answering concerns Strange Rash/ Low B12 :

More serious side effects are rare but can occur

She first began to notice a sensation of swelling and tightness of the skin of the face and extremities

(2014) Meta-analysis of methylcobalamin alone and in combination with prostaglandin E1 in the treatment of diabetic peripheral neuropathy

Many people who have hypothyroidism (an underactive thyroid) are also low in vitamin B12

Any weight loss likely results from concurrent dietary modifications rather than the injections themselves

But there is strong evidence that taking vitamin B3 in supplement form called nicotinamide can greatly reduce the risk of non-melanoma skin cancer