According to Mayo Clinics drug and supplement reference, intramuscular B12 (the form used in MIXTs B12 injection protocols) is well-established for restoring B12 status quickly in clinically deficient patients and is often used when oral supplementation is poorly absorbed
Correcting a true B12 deficiency can improve energy and exercise capacity, which may indirectly help with diet and training
it would apply only to oral supplements
Deficiency in B12 can lead to demyelination, resulting in neurological symptoms such as numbness, tingling, impaired coordination, and cognitive decline
Tesamorelin: The Belly Fat Buster What it does: Tesamorelin is a GHRH analog (like Sermorelin), but with a higher potency
Injections, on the other hand, skip the digestive system for a more direct and effective delivery of vitamin B12