If you can find these, I will attest...they are worth the search and effort. I went to tennesee to do a construction job and we were rained out for 2 weeks. The day we arrived, I met the rest of the crew to work with, but me and the boss had to find something to do for 2 weeks until weather cleared and we could do the remodel. We decided to go to the gym in knoxville, tn. My frind (boss) went to GNC and bought these Ester-bol capsules and creatine, and whey protein, and shared them with me as we worked out for 2 weeks while weather was bad. I had used to work out, but hadnt in about 3 years before that. However, in just 2 weeks time, when i returned to job site and re-met with the crew we met the first day, they were calling me 'ROID' and said they could not believe the change that occured from the 2 weeks of hitting the gym (and these tablets...haha).  
 
I will say that the pump in unreal. The gains were beyond my imagination and never would i have exected to do a 110% turn-around in 2 weeks time over these tablets I made fun of my boss for even buying...  
 
If anyone can find these. Buy them and take about 4 20-30 minutes before working out...you will be a new man in 2 weeks of steady training.. no joke. 14 days (especially if you have worked out before and quit), is all you need to have people thinking you MUST be a juicehead due to the gains. If anyone contests this, they are a fool and though i am not Arney, I was 215lbs 5 ft11 brick wall... Ha... (not a professional builder, just a guy) Just thinking about it makes me want to do it again. If anyone knows anything else close to this on todays market, please let me know.