Optimum Nutrition - Serious Mass 12lbs

Optimum Nutrition — Serious Mass (12 lbs)

Product Description

Optimum Nutrition Serious Mass is the ultimate weight gain and muscle-building formula, created for those who struggle to consume enough calories for growth. Each serving delivers a massive 1,250 calories, 50 grams of high-quality protein, and over 250 grams of carbohydrates — fueling muscle recovery and size without unnecessary fat. Designed for hard gainers and athletes with high energy demands, Serious Mass provides the nutrients you need to bulk up and build serious size, fast.

Key Benefits

• 1,250 calories per serving for maximum muscle growth

• 50 g of protein from a premium blend of whey, casein, and egg proteins

• 250+ g of complex carbohydrates for sustained energy and recovery

• 25 vitamins and minerals for overall health and performance

• Creatine and Glutamine support strength and muscle repair

• Mixes easily — no clumps or chalky texture

• Ideal for hard gainers, athletes, and high-metabolism individuals

• Available in rich flavors like Chocolate, Vanilla, Strawberry, and Banana

Why It Works

Serious Mass simplifies bulking by providing a calorie-dense, nutrient-rich shake that helps you meet your daily intake goals. The protein blend supports sustained muscle recovery, while complex carbs replenish glycogen and fuel performance. Added creatine and glutamine help boost strength and recovery, making it the perfect all-in-one mass gainer for building lean size and strength.

Directions

Mix 2 scoops with 24 oz of cold water or milk and blend for 30–60 seconds.
For beginners, start with ½ serving daily to assess tolerance and gradually increase.
Consume between meals, after workouts, or before bed for best results.

Ingredient Highlights

• Protein Blend: Whey Protein Concentrate, Calcium Caseinate, Egg Albumin

• Carbohydrate Matrix: Maltodextrin for sustained energy

• Creatine Monohydrate & Glutamine – Strength and recovery support

• Vitamin & Mineral Complex – Supports metabolism and performance

Nutritional Profile (Per Serving)

• Calories: 1,250

• Protein: 50 g

• Carbohydrates: 252 g

• Fat: 4.5 g

• Sugar: 20 g

• Creatine Monohydrate: 1 g

Allergen Information

Contains milk, egg, and soy (lecithin). Manufactured in a facility that also processes wheat, peanuts, and tree nuts.

Size & Servings

• Net Weight: 12 lbs (5.44 kg)

• Servings: ~16 per container