Use sterile handling, avoid vigorous shaking and repeated freeze-thaw cycles, and do not use the material if the seal is damaged or if persistent particles, unexpected cloudiness, or discoloration is present after dissolution
Theres been a lot of talk about B12 and mixed-ingredient lipotropic injections, but neither is without danger nor guarantee
CL Answer What's the Best Way to Take Vitamin B-12
Because it does not suppress appetite, it can theoretically be combined with GLP-1 agonists to add a lipolytic component to the appetite suppression mechanism, though clinical data on this combination is lacking
Due to the complicating factor of a shot and the extra cost, it seems the best route for most people is to focus on getting adequate B vitamins from food, and supplement as necessary.
The majority pinkness or redness should resolve within 24 hours, though you may experience rough patches as the skin exfoliates over the next 7 to 10 days