- -29%
What is Reflex Nutrition Instant Mass Heavyweight protein gainer?
Instant Mass Heavyweight delivers a premium blend of complex carbohydrates from maltodextrin, oat flour, and trehalose to provide your body with a serious fuel source without simply adding sugars, corn syrups, or fructose. This high-calorie protein shake contains a whey protein blend combined with 18 added vitamins and minerals to support your physical goals before, during, and after training.
Who should use this heavyweight mass gainer?
Instant Mass Heavyweight has been created for hardgainers and athletes who train intensely but find it difficult to gain muscle and weight.
Hardgainers need a high-calorie, carb-heavy diet to boost their training, with a large protein intake to feed their muscles and support recovery. This heavyweight gainer provides the calories, carbohydrates, and protein hardgainers need to boost their training and achieve rapid muscle gains. Each 300g serving delivers a complete whey protein blend combined with complex carbohydrates and performance-enhancing compounds including creatine monohydrate (3g per serving), L-glutamine (1g), and Vitamin B12 for muscle recovery and energy. It's also suitable for vegetarians.
Key ingredients and nutrition of this mass protein shake
This protein powder combines multiple high-biological-value protein sources: whey protein concentrate, hydrolyzed whey protein, native whey protein isolate, milk protein concentrate, and egg albumen. Together, these deliver a complete amino acid spectrum to maximize muscle recovery and growth.
The carbohydrate matrix features maltodextrin, oat flour, and trehalose for sustained energy without sugar crashes. The formula also includes performance-enhancing compounds: Creapure® Creatine Monohydrate for strength gains, L-Glutamine for recovery, Magnesium Bisglycinate for muscle relaxation, BioPerine® Piperine for nutrient absorption, and LactoSpore® Bacillus coagulans (50 million CFU) for digestive health.
Micronutrient fortification includes 18 added vitamins and minerals: Vitamin C, D3, B6, B12, Vitamin A, zinc, magnesium, and others. This comprehensive vitamin and mineral blend supports recovery, immune function, and metabolic processes during intense training, reducing the need for additional supplementation.
How to prepare and use this Reflex Nutrition gainer
Mix 300g (approximately two level 250ml scoops) with 700ml water in a shaker cup or blender. Blend until smooth for optimal texture and taste consistency. New users should start with a half serving (150g) and gradually increase to one or two daily servings.
This heavyweight mass gainer can be taken up to twice daily: as a post-workout shake for muscle recovery, or as a mid-day caloric boost for total daily consumption. For precise dosing, use a kitchen scale as scoops measure volume, not weight.
Value and bulk serving options for this heavyweight mass gainer
The 5.4kg bulk container provides exceptional long-term value for athletes with high daily calorie and protein needs. This large powder size delivers either 16 × 150g servings or 8 × 300g servings depending on your training intensity and mass-building goals.
For hardgainers requiring consistent daily supplementation, the bulk format significantly reduces cost per serving compared to smaller containers. This 5.4kg size is ideal for serious athletes committed to rapid muscle gains who cannot afford to run out of their primary nutrition source during critical training phases.
- Unit pricing measure
- 5400 g
- Unit pricing base measure
- 1 Kg
Instant Mass Heavyweight, Chocolate Peanut Butter - 5400g
Food supplement in powder form, containing carbohydrate, protein, creatine vitamins and minerals
Serving Size: 2 Scoops (300g)
Servings Per Container: 18
Per 100g
Per Serving
*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Other ingredients: Carbohydrate Blend (-66 %) (Maltodextrin, OAT Flour, Trehalose), High Biological Value Protein Blend (-15 %) (Whey Protein Concentrate (MILK), Hydrolysed Whey Proteins (MILK), Native Whey Protein Isolate (MILK), MILK Protein Concentrate, EGG Protein Albumen, Emulsifier (SOYA Lecithin)), Glutamine Peptides (WHEAT), Cocoa Powder (chocolate varieties only), Flavourings, Creatine Monohydrate (Creapures), Colour (Beetroot Red (strawberry variety only)), L-Glutamine, Magnesium Bisglycinate, L-Choline, Colour (Beta Carotene (vanilla variety only)), Sweetener (Acesulfame K), L-Ascorbic Acid, Bacillus coagulans (LactoSpore'), Sweetener (Sucralose), Zinc Bisglycinate, Tocotrienol-Rich Annatto Seed Extract, Ferrous Bisglycinate, Nicotinamide, Copper Bisglycinate, Selenomethionine, Piperine (BioPerineP), Retinyl Acetate, Calcium D-Pantothenate, Cholecalciferol, Pyridoxine Hydrochloride, Thiamin Hydrochloride, Riboflavin, Chromium Picolinate, Methylcobalamin, Pteroylmonoglutamic Acid, D-Biotin.
Recommended use: For a full serving mix 300 g (approximately two level 250 ml measures) with 700 ml water in a suitable shaker cup or blender, mix until smooth. New users of this product may find it easier to start with a half serving and then slowly increase to one or more full servings per day as required by your calorie intake plan.
Warnings: This product is a food supplement and should be used in conjunction with food as part of a healthy and varied diet, not as a substitute for such. Recommended consumption is up to two 300 g servings per day. Do not exceed the stated recommended daily dose. This product is not intended for use by persons under the age of 18. Keep out of reach of young children. The scoop included with this product measures by volume not by weight, for precise measurements please use measuring scales. This product typically provides 16 x 150 g servings or 8 x 300 g servings. This product is sold by weight, not by number of servings. This product has been manufactured in a facility which is routinely tested for banned substances.
Net weight:Â 5470g
Product EAN:Â 5033579001395
Do not use as a substitute for a balanced and varied diet. Do not exceed the recommended daily dose. Keep out of reach of children.
Country of origin:Â GB
Do not exceed the recommended daily dose.
Keep out of the reach of children under 3 years of age.
Store in a cool, dry place away from heat sources.
Food supplements are not intended as a substitute for a varied diet.
BodyNutrition recalls the importance of following a healthy lifestyle and a varied and balanced diet.
The product descriptions used on this website belong to the manufacturers. BodyNutrition assumes no responsibility for their accuracy.