after taking vitamin b12 injection Injections Vitamin B12 Injections vs. Supplements:

An evidence-based review of fat modifying supplemental weight loss products

Derived from the lipolytic region of human growth hormone, the 16 amino acids sequence retains key structural elements for focused research applications

Or schedule a mobile phlebotomy service to come to your home

Berlin H, Berlin R, Brante G (1968) ORAL Treatment of pernicious anemia with high doses of vitamin B12 without intrinsic factor

Active Ingredients (Per Vial): GHK-Cu 50mg A copper-binding tripeptide studied for its role in collagen synthesis, cellular regeneration signaling, and extracellular matrix remodeling in laboratory research models

No not at all, as you cannot overdose them there is no reason that they should