Standalone medical supply purchases typically remain prescription-free under federal rules
Peptide effects can vary significantly from person to person, Husain says
The most common side effect of B12 injections is irritation at the injection site, and injections are typically administered intramuscularly or subcutaneously. Less common side effects may include headache, nausea, diarrhea, itching, or a brief feeling of lightheadedness after the injection
It is unlikely to hurt is not evidence that it works. A well-tolerated ingredient with no proven hair-growth efficacy is exactly that: safe and unproven
Remember, while this is the usual protocol, your exact dosage and frequency might differ
If you take these and other vitamins and minerals in high doses for a long time, they could cause health issues