Be very careful with these research chem products. I had Tadalafil (cialis) by RATS ARMY... first of all, it’s a liquid that comes with a dropper for dosing. There’s no dosing marks on the dropper to know exactly where you should fill the dropper to! Supposedly one dropper full is 5mg. That dose did nothing for erections. 2 droppers full (10mg supposedly) a few days later and I felt a very slight something. A week later I tried 3 droppers full (15mg) and it still didn’t give me a raging hard on that any legit Cialis would! BUT I did have severe intestinal issues a day later. Severe! I didnt know it was the Rats Army Tadalafil because I had the pain a day later. 2 weeks later I tried 3 droppers full and the same Thing happened! No raging boner and Severe pain again a day later. I inquired with the staff at Rats Army and they said they’ve never had an issue like that before but state they only suggest using 5mg at a time. Well, tadalafil can be dose up to 20mg so why hold back at 5mg?!?! Anyway, I advise you to stay away from the research chemicals from rats army because clearly their tadalafil is not what they say it is. I’ve had the gas station boner pills, real viagra and real cialis... without the problems this research chemical gave me so I hope you steer clear of this one.