where is the best place to inject vitamin b12 How Self-Inject at Home Best Vitamin B12 Injection Sites:

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Short answer: If you can absorb B12, high-dose oral B12 (1,0002,000 mcg/day) is as effective as intramuscular injections for normalizing levels in most people (AAFP

Heat and humidity degrade most formulations

That's not something I've been able to say about most suppliers

Vitamin B12 is found in food of animal origin, in milk (products), eggs as well as meat and especially in offal

Without that capillary supply, GHK-Cu has the signal but no nutrient delivery to the treatment site