b12 injection is what drug class Methylcobalamin (Vitamin B12) Vitamin B12 - Wikipedia

This is common during perimenopause or after coming off hormonal contraception

However, researchers and clinicians have observed its potential in a much broader population, especially in the context of: Visceral adiposity (deep belly fat) Growth hormone deficiency Cognitive aging Cardiometabolic risk reduction Its appeal lies in the ability to elevate IGF-1 (insulin-like growth factor-1) levels while preserving the bodys natural feedback mechanisms

Medical providers may start patients with a 1ml dose for 4 weeks [13]

Vitamin B12 is important for proper digestion, and a deficiency can lead to digestive issues such as diarrhea, constipation, and loss of appetite