Just started on a bottle of D-POL yesterday. Took it and a sample pack of Muscle Marinade before heading to the gym. Had intense energy and focus and was in a great mood the duration of the workout. I only have a few packs of MM left, so after that it'll just be the D-POL to see how it works. I had seen some reviews concerning the size of the pills and the gritty texture making them hard to swallow, while they are fairly large and textured, I am not experiencing any difficulties in swallowing them. Hopefully will start to see the some results soon. Will update with any changes. I definitely do have to say, so far my experience with Purus Labs products is awesome.