US$ 27.66
b12 injection benefits for men Vitamin B-12 Injections Vitamin B12 Supplements and Injections
Description
If results plateau at 400mcg after four weeks, consider 500mcg for the remainder of the cycle

Moderate to Severe Deficiency: For moderate to severe deficiencies, the dosage may increase to 1,000 mcg several times a week initially, followed by a maintenance dose

"Best" is not established, because head-to-head human data does not exist

With one version, my urine would turn sort of pinkish