Reflex Nutrition - Instant Mass Heavyweight

The ultimate choice for those looking for a high-protein shake that's packed with calories. Plus we've added creatine, vitamins and minerals making it the ideal all in one.

The ultimate choice for those looking for a high-protein shake that's packed with calories. Plus we've added creatine, vitamins and minerals making it the ideal all in one.




  • High in protein & packed with calories
  • Contains creatine
  • 18 added vitamins and minerals

What is Instant Mass® Heavyweight?

Instant Mass® Heavyweight is a protein shake designed specifically for hardgainers and athletes wanting a very high quality source of protein and complex carbohydrates.

Each serving provides a huge protein, carbs, and calories. In order to provide such a huge dose of protein, we've created the Quattro® protein blend, which is four of the best types of whey protein together with our slow-releasing protein Micellar Casein.

Instant Mass® Heavyweight delivers a blend of complex carbohydrates to provide your body with a serious source of fuel without simply adding sugars, corn syrups, or fructose. It also contains 18 added vitamins and minerals to support your physical goals before, during and after training.

Who is it for?

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 hit to feed their muscles. Instant Mass® Heavyweight provides the calories, carbohydrates and protein hardgainers need to boost their training. It's also suitable for vegetarians.

What are the benefits?

  • Contributes to the growth of muscle mass
  • Combines four of the best protein sources
  • Contains creatine
  • Whey protein from grass-fed cows

    It also contains the following vitamins and minerals, which all have their own individual benefits:

  • Vitamin B12 which contributes to the reduction of tiredness and fatigue
  • Vitamin B6 which contributes to the normal function of the immune system
  • Vitamin C which contributes to the normal function of the immune system during and after intense exercise
  • Iron which contributes to normal formation of red blood cells and haemoglobin
  • Zinc which contributes to normal carbohydrate metabolism
  • Copper which contributes to the maintenance of normal connective tissue
  • Chromium which contributes to the maintenance of normal blood glucose levels
Additional Information

Additional Information

Main Ingredient Protein Blend
Supplement Facts
Serving Size: (300g)
Typical Values   % RI*
Energy 4618kJ 55%
- 1089kcal       
Fat 5.7 g 8%      
Of Which Saturates 2.3 g 11%     
Mono-unsaturates 1.5 g       
Polyunsaturates 1.7 g       
Carbohydrate 195 g 75%      
Of Which Sugars 4 g  4%
Fibre  9.0g       
Protein 60 g 120%      
Salt 0.75 g 13%      
Vitamin A 400 Ug 50%
Vitamin D3 7.5 Ug 150%
Vitamin C 100 mg 125%
Thiamin 1.6 mg 145%
Riboflavin 1.6 mg 114%
Niacin 9 mg 56%
Vitamin B6 1.5 mg 107%
Folic Acid 100 Ug 50%
Vitamin B12 1.2 Ug 48%
Biotin 80 Ug 160%
Pantothenic Acid 3 mg 50%
Zinc 7.5 mg 75%
Selenium 27 Ug 49%
Chromium 50 Ug 125%
CarboBiotics™ (Maltodextrin, Oat Flour, Trehalose), High BV Protein Blend (Milk Whey Protein Concentrate, Milk Native Whey Protein Isolate, Milk Protein Concentrate, Egg White Protein Isolate, Hydrolysed Whey Protein (degree of hydrolysis 30%), Milk Hydrolysed Whey Protein (degree of hydrolsis 4%), Peptide Bonded Glutamine (Derived from WHEAT Protein), Creapure® Creatine Monohydrate, Fat-Reduced Cocoa Powder, Flavourings, L-Glutamine, Magnesium Citrate, L-Choline Bitartrate, Sweetener (Acesulfame K), L-Ascorbic Acid, Bacillus Coagulans (LactoSpore®), Emulsifier (Soya Lecithin), Sweetener (Sucralose), Zinc Monomethionine, Tocotrienols ((DeltaGold®) 35% total tocotrienols of which 84-92% Delta-Tocotrienols, 8-16% Gamma-Tocotrienols), Iron Bisglycinate, Nicotinamide, Copper Aspartate, Selenomethionine (SeleniumSELECT®), Piperine Extract (Bioperine®), Retinyl Acetate, D-Calcium Pantothenate, Cholecalciferol, Riboflavin, Thiamin Hydrochloride, Pyridoxine Hydrochloride, Chromium Picolinate, Pteroylmonoglutamic Acid, D-Biotin, Methylcobalamin, Anit-Caking Agent (Calcium Silicate).
Recipe contains: Milk (and products thereof), Gluten, Soya (as soya lecithin).
Made in a factory which handles: Products of Fish and Crustaceans (such as chondroitin sulphate, krill oil), Egg (dried egg albumen). Although no nuts are in the recipe of this product we cannot guarantee that this product or the ingredients used within are free from nuts.
Directions of Use

Directions of 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 1/2 serving, and then slowly increase to one or more full servings per day as required by your calorie intake plan. For a creamier, more calorie-dense shake, try mixing with semi-skimmed milk instead of water. Instant Mass Heavyweight is suitable for consumption throughout the day as required by your calorie intake plan. Consume between meals and/or consume 20-30 minutes post-workout to contribute to a growth in and the maintenance of muscle mass. Consume 45-60 minutes before bed to contribute to the maintenance of muscle mass while sleeping.

Warnings: This product is a food supplement and should be used in conjunction with food as part of a healthy balanced diet, not as a substitute for such. Use as part of a healthy and active lifestyle. This product is not intended for use by persons under the age of 16. Keep out of reach of young children. Do not exceed the stated daily dose. Store in a cool, dry place.


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100% original, in excellent condition and stored in a temperature-controlled warehouse.