If you are otherwise healthy and eat a well-balanced diet that includes foods rich in, or fortified with vitamin B12, it is unlikely that you need additional B12, either as vitamin tablets or injections
A 2019 study found sublingual B12 supplements (aka the kind you put under your tongue) were even more effective than B12 shots
Capillary supply to the repair area
Studies using murine models report increased T4 expression during muscle injury and regeneration, with the peptide promoting the migration of muscle satellite cells to the injury site
The peptide itself is not a controlled substance in Canada, so customs issues are relatively rare for personal research quantities, but awareness of potential delays helps with planning
The 20232026 Category 2 period created a gray market, and concern about unverified raw material quality has increased among quality managers at compounding pharmacies and research institutions alike