Serious Mass

·       High-calorie formula – Supports increased daily energy intake

·       Protein and carbohydrate blend – Designed to complement strength and resistance training

·       Added vitamins and minerals – Supports general nutrition intake

·       Easy to mix – Suitable for shakes and smoothies

·       Versatile use – Can be used between meals or post-workout

·       Trusted sports nutrition brand – Produced to Optimum Nutrition quality standards

·       Training longer and harder to gain more muscle

·       1,250 Calories per Serving to Help Support a Calorie Surplus for Weight Gain and Muscle Building

·       50 Grams of Blended Protein per Serving to Help Build and Maintain Muscle

·       252-254 Grams of Carbohydrates (with no added sugar) to Help Fuel Workouts and Aid in Replenishment of Glycogen Stores

·       3g Creatine Monohydrate To Support Muscle Strength, Power And Size When Combined With High-Intensity Activities

·       20 Additional Vitamins and Minerals (including L- Glutamine)

·       Ideal Formula to Support Weight Gains

·       Available in a Range of Sizes and Great Tasting Flavours

·       Enjoy Post Work-out and Between Meals

(Exact formulation may vary by flavour)

Ingredients - Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (Processed with Alkali), Natural and Artificial Flavour, Vitamin and Mineral Blend (diPotassium Phosphate, Magnesium Aspartate, diCalcium Phosphate, Calcium Citrate, Ascorbic Acid, Niacinamide, Zinc Citrate, Beta Carotene, d-Calcium Pantothenate, d-alpha Tocopheryl Succinate, Selenomethionine, Copper Gluconate, Ferrous Fumarate, Manganese Amino Acid Chelate, Thiamin Mononitrate, Pyridoxine Hydrochloride, Riboflavin, Chromium Polynicotinate, Folic Acid, Biotin, Molybdenum Amino Acid Chelate, Cholecalciferol, Potassium Iodide, Cyanocobalamin), Acesulfame Potassium, Lecithin, Medium Chain Triglycerides.

High-energy formulation
Suitable for calorie-dense shakes

Serious Mass contains a broad spectrum of vitamins and minerals that may contribute to daily nutritional intake, including:

Vitamin C & Vitamin E – Support normal cellular function

B-group vitamins – Contribute to normal energy metabolism

Calcium & Phosphorus – Support normal bone health

Iron & Zinc – Support general nutritional requirements

(Nutrient values vary by flavour. This product is not intended as a sole source of nutrition.)

Mix 2 heaped scoops with 700–900 mL of water or milk

Consume once daily, or divide into smaller servings

Can be used between meals or after training

Adjust serving size to suit individual calorie needs

Optimum Nutrition Serious Mass works by providing a calorie-dense combination of carbohydrates, protein, and micronutrients in a convenient powdered format. When incorporated into a balanced diet and resistance training program, it helps individuals increase overall energy and nutrient intake to support body weight and muscle mass goals.

Optimum Nutrition Serious Mass is a high-calorie mass gainer formulated for individuals looking to increase daily energy and nutrient intake as part of a structured training and nutrition plan. Combining protein and carbohydrates in a convenient powdered format, this weight gain supplement is designed to support those with higher calorie needs, including hard gainers and strength-focused athletes. Widely recognised within sports nutrition, it is a staple across Mass Gainers and Protein & Weight Support categories and is presented in the iconic Optimum Nutrition Serious Mass gainer powder tub.

Often described as a serious mass high calorie weight gain supplement, this formula mixes easily into shakes or smoothies and can be used between meals or after training. As a high calorie protein and carbohydrate blend, it fits naturally into Strength Training and Fitness Essentials routines, helping support overall energy intake alongside resistance training. The trusted Optimum Nutrition Serious Mass protein and carb powder offers a reliable option for those seeking practical muscle mass support through everyday sports nutrition.

Not suitable for children under 15 years of age

If pregnant, breastfeeding, or taking medication, consult a healthcare professional before use

Do not exceed the recommended serving size

Contains milk, egg, and soy ingredients

Store in a cool, dry place

Not intended to diagnose, treat, cure, or prevent any disease

Product Type: Mass Gainer / Weight Gain Supplement

Attributes: Sports Nutrition, Mass Gainers

Brand: Optimum Nutrition

Product Type: Mass Gainer

Form: Powder

Protein Source: Whey, Casein, Egg

Dietary Notes: High calorie, protein-containing supplement

Use: Weight & calorie support, Weight & mass gain support

Suitable For: Strength and resistance training

What is Serious Mass used for?
Serious Mass is designed to help increase daily calorie and nutrient intake as part of a balanced diet and training program.

When should Serious Mass be taken?
It can be taken between meals, after training, or split into smaller servings throughout the day.

Is this suitable for beginners?
It may be suitable for adults with higher calorie needs, including those new to resistance training.

Does Serious Mass replace meals?
No. It is a supplement intended to complement, not replace, a balanced diet.

Is this a medicine?
No. Serious Mass is a sports nutrition supplement and is not intended to treat or cure medical conditions.