The average male athlete will usually need a dosage in the range of 4 to 6 I.U. per day to elicit the best results. On the low end perhaps 1 to 2 I.U. can be used daily, but this is still a considerable expense. Daily dosing is important, as HGH has a very short life span in the body. Peak blood concentrations are noted quickly (2 to 6 hours) after injection, and the hormone is cleared from the body with a half-life of only 20-30 minutes.

Daily doses of 3 to 6 IU injected subcutaneous have actually been shown to spot reduce body-fat mass and have, at least for some athletes, proven invaluable in contest preparation time. This dose, for short periods of time, may be somewhat affordable to a truly dedicated athlete.

For all intents and purposes of increasing endurance and performance to some level, 3 to 6 IU will suffice. The same for most fat loss purposes. HGH has a very short half-life (30-45 minutes or so) and should be injected at least once daily, maybe twice daily if at all possible. For possibly more anabolic results due to its effects on freeing nutrients and increasing IGF-1 levels, 10-12 IU per day are needed for an extended period of time (10-15 weeks), usually in conjunction with other anabolic compounds.