how long does vitamin b12 injection take to work Are Shots Right for You? Feeling worse after B12 Injection:

Unless instructed by a health care provider, this injected site is not recommended because untrained injectors may damage the sciatic nerve

Meat, milk, and eggs are a primary source of vitamin B12

The derm said not much can be done about the scarring, only time will tell (again, frustrating!!!!)

No tolerance development to the lipolytic effects was noted in these studies, suggesting that unlike beta-2 agonists (which rapidly desensitize their receptors), beta-3 receptor activation may not produce the same downregulation pattern

Not intended for diagnostic, therapeutic, or personal use

Used in certain cases, depending on anatomical considerations and clinical evaluation