l carnitine use before or after workout L-carnitine benefits, uses & dosage: A complete guide L-Carnitine Supplements: Benefits, Dosage and

W.BurchellB.GuillemetteC.IkushiroS.IyanagiT.et al (2005)

Vitamin B12 injections can certainly help maintain proper metabolism and overall health, but it is also important to see that metabolism is not solely about Vitamin B12

The ROS cause the mitochondria to swell and disrupt their internal folded membranes, known as cristae, which house the electron transport chain

Use it twice daily, morning and night, before the rest of your skincare routine

In summary, monitor the injection site (if pain increases or the area gets very red, hot, and swollen, inform your doctor as that could indicate injection-site infection, which is exceedingly rare with proper technique)