can b12 injection cause spots Best Vitamin Site: Administering B12 Shots Can B12 and Biotin Cause

If you have digestive issues, the injection bypasses the digestive system, and the vitamin starts working immediately

The Solution: Follow structured cycling (8-12 weeks on, 4-6 weeks off) to maintain sensitivity and effectiveness across multiple cycles

Do not use after the expiration date code provided or printed on the packaging

Having an autoimmune disease : Some autoimmune diseases can damage the stomach lining (including pernicious anemia) where intrinsic factor is produced

During initial treatment for diagnosed deficiency, providers typically administer injections daily or every other day for one to two weeks