injection of b12 Do You Need a Prescription for Injections? Are Vitamin B12 Shots Right
Description
However, despite the encouraging evidence, gaps in our knowledge remain to be filled in order to fully understand the mechanisms connecting NNMT with MetS-related disorders and to develop clinical agents against NNMT

What are the Benefits of a Vitamin B12 Injection

The difference is in the research target

Anything higher than that quickly becomes too much volume for one subQ site, which is why oral capsules are the standard route

[2] Pharmacokinetic studies demonstrate rapid systemic distribution with peak plasma levels occurring within 30-60 minutes of intramuscular injection, followed by extensive hepatic storage and enterohepatic recycling
