Intramuscular administration of vitamin B12 is often preferred for its rapid improvement in patients with severe deficiency or severe neurological symptoms
Treatment is safe and effective, as long as you catch the problem before permanent damage occurs
Vitamin D Shot Vitamin D is essential for bone health, calcium absorption, immune function, and mood regulation
doi:10.1152/japplphysiol.00945.2010
Whichever you choose, read the current certificate of analysis before you buy, and keep everything strictly for laboratory research use, which is the only basis the FDAs drug-approval process leaves open
The reconstitution technique is the same, but the concentration calculations produce very different numbers