I will say this, I am at the end of my second bottle, and the tendonitis in my left elbow was so bad 2 months ago I could hardly curl a dumbell, it usually takes ma few months to subside when it flares up that bad, and I have not felt it in weeks , it has been 100% and I have to attribute that to the OSTA RX, Although I still protest the absurd price(i bought both my bottles for 49.00 from a retailer when it came out) I will say this. OSTA RX has given me lean lean gains in a low -carb calorie deficit, with little to no sides (i think after 7 weeks its messing with my emotions a bit , but I am weird that way) This is a good product , I would use it again , and again for that matter but I aint paying $100.00 for this or any other supplement . If it ever gets down to 50 - 55.00 bucks again I would definatly use it. Btw The gains were evident for me at the end of week 3, so for me I gotta run two bottles, maybe that varies from person to person. Hope that was helpful (and objective)