Unfortunately, this is the potential scenario of peptide marketing and use in such an unregulated environment
However, some people cannot take vitamin B12 injections safely, including those with Lebers disease or similar eye concerns, kidney disease, liver disease, iron or folic acid deficiency, an active infection, or those taking medications that may interact with vitamin B12
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Switching to a fresh, well-rotated site and applying a cool compress for 10 to 15 minutes typically resolves the issue
The compounding pharmacies add it for this practical reason, not merely to increase ingredient count