Research studies have further shown that one (2ml. vial) Sub-Q Inj. each week for six consecutive weeks provides the best results. There after, use only one (2ml. vial) per month. It's best to give the Sub-Q Inj. 6 days before intense work outs. Therefore for best results, one vial per Sub-Q injection per week for 6 consecutive weeks, then 1 vial per month (the glass vial is 2ml, with 10mg TB-500 per vial), so it is 10mg/2ml).