lump under skin after b12 injection Break outs course : r/B12_Deficiency What is BCG reaction? What

Vitamin B12 Deficiency and Diabetes Medically reviewed by Dr Sultan Linjawi, Endocrinologist & Diabetes Specialist March 2026 Vitamin B12 is really important

Key takeaways B12 shots help most when theres a true deficiency or an absorption problem (like pernicious anemia or after GI surgery)

While B12 can be taken orally, injections or IVs are really the most effective, absorbable ways to get B12 into your system

Signs of compromised water include cloudiness, visible particles, unusual odor, or discoloration

However, the lasting effects of these injections can vary significantly between individuals, influenced by factors such as overall health, the severity of the deficiency, and the bodys absorption capacity