i use to use superpump250. i like it for a few months and then out of no where everytime i took it, i would have to take a MASSIVE dump 20-30 minutes later. I am now on the lipostack and i get stupid big pumps on it. The only problem i've had with it is i started a little high on the doseage and OMEGA helped me lower it to the right amount. I've ramped it up very little and it still gives me all the goods.