The vitamins may take some time to fully absorb into the body, meaning with injections it may take a few days or weeks before the effects are noticeable, and may take a bit longer for vitamin supplements, but at the recommendation of a doctor, you should feel better with the correct amount of vitamin B12 being taken regularly
Even though many substances banned in sports are also illegal, there are many available by prescription or can be found as ingredients in sports and nutritional supplements and available for purchase at retail or online
Endocrinology (1999) 140(11):535663
Dosage : A common dosage is around 100 mg taken two to three times a day, but always refer to product guidelines
5 Amino 1MQ Iodide Salt Structure | 2D Chemical Diagram | CAS 42464-96-0 | NNMT Inhibitor Reagent Molecular Specification
Public Health Nutrition 18, 33553370