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Arginine 200mg (IV or IM injection) This amino acid used to make nitric oxide, a molecule that facilitates the flow of blood to the penis during an erection, and is the most common amino acid found in sexual supplements

Injection Site : Different sites may require different needle lengths and gauges to promote the correct and comfortable delivery of the medication

Here are a few common examples of how this can occur

For example, a doctor might prescribe the following: 100 micrograms daily for about a week Followed by every other day for seven doses After that, every three to four days for two to three weeks Once monthly until the deficiency is treated B12 injections require a prescription and can be administered at a doctor's office or at home with the approval of a healthcare provider

B12 shots are typically given in the muscle of the upper arm (deltoid) or the hip (gluteal muscle)