OPTIMUM NUTRITION SERIOUS MASS is the ultimate in weight gain formulas. With 1,250 calories per serving and 50 grams of protein for muscle recovery support, this instantized powder makes the ideal post-workout and between meals shake for sizing up your goals. Serious Mass provides you with the tools you need to pack on the pounds and help you develop the physique you’ve always wanted.
Adding Calories Has Never Been This Easy or Tasted So Good
- 1,250 Calories
- 50 Grams of Blended Protein
- Over 250 Grams of Carbohydrates with NO ADDED SUGAR
- Creatine, Glutamine and Glutamic Acid
- 25 Vitamins and Essential Minerals
Optimum Nutrition Gold Standard Pre Workout 30 Serve unleashes amplified energy, focus, and supports enhanced endurance to help you reach the pinnacle of your game, crush your next set, get that last rep, and achieve some true gains. Whatever your goals, accomplish them all with the pre-workout from the most trusted brand in sports nutrition.
- 375 mg of Acetyl-L-Carnitine HCI
- 250 mg of N-Acetyl-L-Tyrosine
- Muscle Matrix including 25 mg of AstraGIN®