Magnum Nutraceuticals is not a well known brand but their new Opus pre-workout has been popping up for quite a few people. It contains 48 servings with a maximum of two per day. It is apparently stimulant free so expect about half or less of a pump that DMAA infused supplements. It is packed full vitamins, minerals and amino acids, Muscle Pharm’s Assault achieves powerful results without the common ingredients but Opus looks like it might be coming up short on the contents. Available in just one flavor, cellular punch, you will be a lot better off with your current pre-workout.
