I've run Jintropin before and Nurotropin is definitely comparable. The quality is top notch. I've running it for just over 3 weeks at 1/3 vial daily 30min before gym. My body fat% has gone down noticeably. Got a firm six pack. The veins are sticking places I've never had before (shoulders, chest). I've put on 5lbs but it looking like 10. The muscle became tighter and firmer. The strength has gone up too. The pumps are just INSANE! I can't stretch my arms out after the work out.I feel great overall. Better sleep and elevated mood. Hands feel fine. No CTS noticed so far. Very pleased with this purchase. Close