It is usually administered in a healthcare setting, such as Neighborhood Medical Center, and the injection is typically given in the muscle (intramuscular, IM) or under the skin (subcutaneously)
10 vials x 20ml of Vitamin C (Ascorbic Acid 10gm)
The standard escalation protocol exists for good reason
First described back in the 1950s, acne erupts in about one in ten people within days or even hours of getting an injection of vitamin B12, which then disappears rapidly when injection treatment is discontinued. At the time, we had no idea what the mechanism might be, and the problem remained unsolved until just a few years ago when we finally figured it out: Vitamin B12 modulates the gene expression of the skin bacteria that cause acne
In most jurisdictions, they need to be certified, but the licensing process is not as involved as for nurses, physician assistants, and doctors