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Reflex Nutrition Instant Mass Heavyweight


Now £29.99

Chocolate Perfection In Stock
Strawberries & Cream In Stock
Reflex Nutrition Instant Mass Heavyweight


Now £48.95

Choc Peanut Butter In Stock
Chocolate In Stock
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Vanilla In Stock
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Reflex Nutrition Instant Mass Heavyweight

  Reflex Instant Mass Heavyweight is available at lowest price in the UK at We offer free delivery on all of the top bodybuilding and sports nutrition supplements to UK Mainland and the cheapest rates right across Europe! Check out our special offers page for huge discounts on the biggest brands!

Reflex Nutrition Instant Mass Heavyweight

Get a Tornado Shaker Free when you spend £50 or more - Whilst Stock Lasts!

Get a Tornado Shaker Free when you spend £50 or more - Whilst Stock Lasts!

Get a Tornado Shaker Free when you spend £50 or more - Whilst Stock Lasts!


Reflex Nutrition’s newest and best weight gainer designed specifically for hardgainers and all athletes wanting a very high quality source of protein and complex carbohydrates. A formula designed to outperform in every area and will rewrite your expectations of what a weight gainer can deliver.

At 1160 calories per serving, this is Reflex’s most calorie-dense weight gainer formulated specifically for hardgainers.
Contains high BV Quattro® protein complex provides a massive 60 grams of protein per serving.
Includes a unique CarboBiotics™ carbohydrate complex with no added sugars.
Packed with a stack of the world’s purest most proven Creapure® creatine with added zinc, magnesium and vitamin D3.



Container Size: 2kg
Serving Size: 300g
Servings Per Container: 6
Container Size: 5.4kg
Serving Size: 300g
Servings Per Container: 18
Amount Per Serving: 
Total Calories: 1160
Protein: 60g 
Total Carbohydrates: 219g
-Sugars: 3.3g
Fat: 4.8g
-Saturates: 1.8g
- Polyunsaturates: 1.7g
-Monounsaturates: 1.1g
Dietary Fibre: Trace
Salt: 0.69g
Vitamin A: 400µg
Tocotrienols (DeltaGold®): 7.5mg
Vitamin B6: 1.6mg
Vitamin C: 100mg
Thiamin: 1.6mg
Riboflavin: 1.6mg
Niacin: 9mg
Vitamin D3: 7.5µg
Folic Acid: 100µg
Vitamin B12: 1.2µg
Biotin: 80µg
Pantothenic Acid: 3mg
Magnesium: 150mg
Iron: 2.3mg
Copper: 0.8mg
Zinc: 7.5mg
Selenium: 9µg
Chromium: 50µg
Creatine Monohydrate: 3000mg
Glutamine: 1000mg
L-Choline: 100mg
Piperine Extract (Bioperine®): 5mg
LactoSpore® Bacillus Coagulan: 500,000,000 Spores
CarboBiotics™ (Maltodextrin, Oat Flour, Trehalose), High BV Protein Blend (Whey Protein Concentrate, Native Whey Protein Isolate, Milk Protein Concentrate, Egg White Protein Isolate, Hydrolysed Whey Protein (degree of hydrolysis 30%), Hydrolysed Whey Protein [degree of hydrolysis 4%]), Peptide-Bonded Glutamine (Derived from Wheat Protein), Creapure® Creatine Monohydrate, Fat-Reduced Cocoa Powder (Chocolate varieties only), Flavourings, Colour (Betanin [Strawberries & Cream variety only]), L-Glutamine, Magnesium Citrate, Potassium Chloride (Choc-Peanut Butter variety only), 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, Colour (Beta Carotene [Vanilla Ice Cream variety only]), Chromium Picolinate, Pteroylmonoglutamic Acid, D-Biotin, Methylcobalamin, Anti-Caking Agent (Calcium Silicate).
Allergens: Contains gluten, milk, egg and soya derived ingredients. 
Please Note: Nutritional facts and ingredients may vary slightly between flavours.

For a full serving mix 300g (approximately two level 250ml 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 ½ 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 to maintain a positive nitrogen balance. 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 overnight.
The above is our recommended usage directions; you may of course mix with more of less liquid to reach the desired consistency and taste.
Product is best consumed immediately once mixed.
Do not leave mixed product to stand, or leave in warm environments for extended periods.
This product is not intended for use by persons under the age of 16.
Do not exceed the stated daily dose.
Reviews (1)

"Reflex have changed the make up of their instant mass which I found misleading so basically I bought the wrong product. Its a crash weight gain now and not a relatively equal split of oats and whey as it used to be!"

Posted by Barrie Douglass  (3rd July 2014)

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Q Hello, I am taking 3 half scoops a day, this is 1 in the morning, 1 after lunch and 1 before bed. Is this correct what I am doing? How much Creatine does this mean I am taking in and is it too much?

Yes the Directions do state you can start off by taking half scoops (150g) servings which you are doing. This will be 1.5g of creatine each time, and the recommended daily amount is 5g.

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