Optimum Nutrition Serious Mass Weight Gainer Protein Powder

Description

Calorie-Dense Nutrition for Hard Gainers

Optimum Nutrition Serious Mass is a high-calorie weight gainer designed for men who struggle to consume enough food to support muscle growth. Each serving delivers 1,250 calories along with 50 grams of protein, over 250 grams of carbohydrates, and 25 vitamins and minerals. For naturally thin or highly active men who burn through calories faster than they can eat them, this product provides a practical solution to the surplus equation.

The protein blend includes whey protein concentrate, calcium caseinate, and egg albumin, providing a mix of fast and slow-digesting proteins that sustain amino acid delivery over several hours.

What’s Inside

• 1,250 calories per serving to support a caloric surplus for muscle gain
• 50 grams of multi-source protein including whey, casein, and egg
• Over 250 grams of carbohydrates for glycogen replenishment and sustained energy
• Creatine monohydrate included to support strength and power output
• Glutamine and glutamic acid to assist with recovery and immune support
• 25 vitamins and minerals for comprehensive nutritional coverage
• Available in multiple flavors with good mixability in a blender

Who It’s For

Serious Mass is specifically designed for ectomorphs, hard gainers, and men with fast metabolisms who find it nearly impossible to eat enough whole food to gain weight. It is also useful for men recovering from illness or injury who need calorie-dense nutrition in an easy-to-consume format. This is not a lean protein supplement — it is a mass builder, and the calorie count reflects that purpose.

Optimum Nutrition is one of the most trusted brands in sports nutrition, and Serious Mass has been a staple in the weight gainer category for years. For best results, use it between meals or as a post-workout shake alongside a structured progressive overload training program.