can you inject b12 into your thigh How to Give Yourself Intramuscular (IM) Injections | Patients & Families How to Give B12 Injections
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These include nerve damage, brain function decline, and even dementia

Possible Side Effects and Risks of Lipotropic Injections Before starting lipotropic injections, you should know about potential side effects and risks

Who should avoid this treatment

They serve as coenzymes for enzymes involved in DNA synthesis, methylation, red blood cell production, nervous system maintenance, and the conversion of food into energy

AOD9604 RCT summary and clinical efficacy Annals of Clinical and Laboratory Science (PubMed) Effect of intraarticular AOD9604 with hyaluronic acid in rabbit osteoarthritis model DrugBank AOD9604 drug summary

It doesnt last for long though, so you do need to get more often
