Power Pump¹ StackCreatine: for more power during explosive strength efforts* Creatine increases physical performance in successive short term, high intensity exercises*. Without caffeine. VNM Power Pump Stack consists of a combination of two supplements: Oxi Pump and creatine. Creatine increases physical performance in successive short term, high intensity exercises. Click on the product link for more detailed information about its composition, use and any warnings.