are b12 injections subcutaneous or intramuscular Vitamin shots: Uses, benefits, and side effects Best Vitamin B12 Injection Sites:

Shaking looks faster, but it forces the air above the powder into the liquid as foam, and you have to wait for that foam to settle before you can draw so it doesnt save time

Your body needs it to produce red blood cells and DNA and to keep your brain and nerve cells functioning

Subcutaneous (SC) : Common sites include the upper arm, thigh, or abdomen

A 2021 peer-reviewed review of NNMT in obesity and type 2 diabetes states explicitly that 'clinical trials targeting NNMT have not been reported' meaning every quantitative efficacy figure available for this compound comes from mice, and there is currently zero published human efficacy data