is this done intramuscular?? or is it 30 gauge insulin pinz?? also im 5'6 would this help me grow at age 20?? also what would i need to take before and after? i can get 1 IU for 4 bux and i was told 2 ius would be good so its like 400 for 50 days, is this a good deal?? help! im totally uneducated on HGH as far as the economics/results of it