It was oil based and it was fucking awesome... I had a little bit of pain yesterday in my quad but I ran right through it... I was SMASHING pr's on this shit... This was my first time using it and I can definitely say that it is everything its made out to be and more... I start off my workouts everyday with an hour and a half of cardio... I took the suspension 30 minutes before my workout so by the time I started lifting it was about 2 hours later... From the moment I picked up what my normal weight is lifting and it felt lighter than a fucking feather, i knew the workout would be great! Average dosing is 50-100 mg but I figured 150 would be fine and it definitely was!