Reflex Nutrition

Reflex Instant Mass Heavyweight (2kg) + FREE Zinc Matrix

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Reflex Instant Mass Heavyweight is a no-nonsense formula packing a staggering 1160 calories per serving with UNDER 5g sugar - this is very impressive when compared to any other gainer with this many calories!
Instant Mass Heavyweight contains the same premium Quattro protein blend that is found in their best selling One Stop Xtreme, and the carbohydrates are in the form of oats, trehalose and maltodextrin - not a sugar to be found.

Reflex Instant Mass Heavyweight is a no-nonsense formula packing a staggering 1160 calories per serving with UNDER 5g sugar - this is very impressive when compared to any other gainer with this many calories!
Instant Mass Heavyweight contains the same premium Quattro protein blend that is found in their best selling One Stop Xtreme, and the carbohydrates are in the form of oats, trehalose and maltodextrin - not a sugar to be found.

Reflex Instant Mass Heavyweight

Echo Supplements on Reflex Instant Mass Heavyweight

Reflex Instant Mass Heavyweight is a very interesting product from Reflex Nutrition and as a weight gainer it is difficult to beat - here are a some of the highlights of the Instant Mass Heavyweight formula: Ā 

  • Protein Sources - as you might expect from Reflex Nutrition there are no cheap proteins (soya in particular is a major ingredient in many other gainers) and the blend is made up of Native Whey Isolate, Whey Protein Concentrate, Milk Protein (Casein), Egg White Protein, Hydrolysed Whey & Peptide Bonded Glutamine from wheat protein. This means the protein found in Instant Mass Heavyweight is all VERY highly bioavailable and also naturally VERY high in branched chain amino acids & glutamine. Ā 
Reflex Instant MAss Heavyweight Key Facts
  • Carbohydrate Sources - once again the important thing to note is you don't see dextrose or fructose in the carbohydrate blend of Instant Mass Heavyweight. Reflex Nutrition have chosen to combine Maltodextrin, Oat Flour and Trehalose (a very slow digesting type of sugar) for a complex carbohydrate blend which won't give you a sugar crash soon after drinking it.

  • Protein to Carb Ratio - a great thing about Instant Mass Heavyweight is that you can take half servings (150g serving) and still get a good amount of protein (30g) whereas in many other "mega gainers" which pack in over 1000 calories per full serving this isn't possible. This is due to the protein to carb ratio being just right to get the calories in without being too low in protein.

  • Added Creatine, Vitamins & Minerals - on top of the awesome macronutrient formulation is the addition of a wide range of vitamins and minerals (including testosterone supporting zinc and magnesium) and 3g of creatine monohydrate which is a great supplement in itself for increasing size and strength.

At Echo we're very happy to recommend Instant Mass Heavyweight to anyone struggling to get the calories in every day - and with 4 great flavours to pick from you won't get bored of the same flavour every time!

What is Instant MassĀ® Heavyweight?

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

Created with hardgainers in mind, Instant MassĀ® Heavyweight provides a huge 60g of protein, 219g carbs, and 1,160 calories in every shake. In order to provide such a huge dose of protein, Reflex Nutrition has created the QuattroĀ® protein blend, which is four of the best types of whey protein together with micellar casein to provide a huge protein hit.

Instant MassĀ® 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 a massive 18 added vitamins and minerals to support your physical goals before, during and after training.

Who is it for?

Instant MassĀ® Heavyweight has been created for both male and female 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 MassĀ® Heavyweight provides the calories, carbohydrates and protein hardgainers need to boost their training.

Instant MassĀ® Heavyweight is a vegetarian product, but it is not suitable for vegans, coeliacs, or anyone under the age of 16.

What are the benefits?

  • Contributes to the growth of muscle mass
  • Combines four of the best protein sources
  • Uses the worldā€™s purest creatine

If you are a hardgainer, youā€™ll know how difficult and frustrating it can be to train hard without seeing massive returns. A hardgainer is simply the colloquial term for someone with an ectomorphic body type, meaning a high metabolism and ā€˜skinny geneticsā€™ make gaining weight, both bulk and muscle, difficult.

Instant MassĀ® Heavyweight provides the body with a four-way split of high-quality protein, plus carbs and calories to provide the body with the energy resources it needs. Vitamins and minerals, such as vitamin C and B6, increase iron absorption and contribute to the normal function of the immune and nervous systems.

Recommended Usage

Mix 300g (approximately two level 250ml measures (there is a scoop included in the tub)) with 700ml water in a shaker or blender. Consume one to two shakes a day.

When just starting the product, users may find it beneficial to begin with half the quantity before slowly increasing to the full serving, as per personal calorie plan.

Consume Instant MassĀ® Heavyweight between meals to maintain a positive nitrogen balance, and drink 20-30 minutes after a workout for optimal results. Alternatively, take Instant MassĀ® Heavyweight 45-60 minutes before bed to contribute to muscle maintenance overnight.

How is it made?

The whey protein concentrate and whey protein isolate in Instant MassĀ® Heavyweight are made by separating the whey protein from the other components in milk. Hydrolysed whey protein is treated with enzymes to make it even faster to digest, while egg white protein is treated in order to remove the protein from the other components making up the egg.
How does it taste?

With extensive research, our team has created, in our opinion, the best tasting hardgainer shake on the market today. It mixes easily, with a milkshake texture, and comes in four flavours:

  • Chocolate perfection
  • Strawberries and cream
  • Vanilla ice cream
  • Chocolate peanut butter

The science behind it

The high BV QuattroĀ® Protein Complex in Instant MassĀ® Heavyweight provides the body with a huge 60g of protein from whey protein concentrate, native whey protein isolate, egg white protein isolate, and hydrolysed whey protein. This ensures the body is receiving enough protein to maintain and grow the muscles that are damaged during exercise.

A whopping 1,160 calories per shake literally feed the body energy, while 219g carbohydrates provide a long-lasting thorough energy source to enable the body to work out for longer, more intense periods.

Reflex Nutrition - Informed Sport

Informed Sport

Manufactured in an Informed-Sport registered UK site by:
Reflex Nutrition Ltd, The Science Park, Sea View Way, Brighton, BN2 6NT

Reflex Nutrition - Vegetarian

Suitable For Vegetarians

Reflex One Stop Xtreme is suitable for those following a vegetarian diet.

Reflex Nutrition - Albion Minerals

Albion Minerals

Albion Minerals are the world leaders and innovator in mineral amino acid chelate technology meaning that the minerals found in Reflex Nutrition products from Albion Minerals are of a superior highly bioavailable form.

Reflex Nutrition - Halal Certified

Halal Certified

Reflex Nutrition are a partner of the Halal Trust which certifies that this product is suitable for anyone that wants to ensure their supplements are Halal.

Nutritional Information Per Serving (300g)
Calories 1160
Protein 60g
Carbohydrate 219g
- of which sugars 3.3g
Fat 4.8g
- of which saturates 1.8g
- polyunsaturates 1.7g
- mono-unsaturates 1.1g
Fibre trace
Salt 0.69g
Vitamin A 400ug
Tocotrienols (DeltaGold) 7.5mg
Vitamin B6 1.6mg
Vitamin C 100mg
Thiamin 1.6mg
Riboflavin 1.6mg
Niacin 9mg
Vitamin D3 7.5ug
Folic Acid 100ug
Vitamin B12 1.2ug
Biotin 80ug
Pantothenic Acid 3mg
Magnesium 150mg
Iron 2.3mg
Copper 0.8mg
Zinc 7.5mg
Selenium 9ug
Chromium 50ug
Creatine Monohydrate 3000mg
Glutamine 1000mg
L-Choline 100mg
Piperine Extract (Bioperine) 5mg
Lactospore Bacillus Coagulan  

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).

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 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.

Reflex Nutrition

Reflex Nutrition produce some of the most highly regarded and recognisable on the supplements market today. With over two decades of experience, Reflex combine health and fitness to create a range of products which have you covered both in and outside of the gym.

Who are they?

Founded in 1996, Reflex Nutrition are based in Brighton, England, and run their own powder, capsule, drinks and bar manufacturing facilities, which makes them unique within Europe. This means that they have complete control over the manufacturing of their products, allowing for only the highest quality of product to leave their factory.

Reflex have always strived to produce the very best products that combine efficacy and broader consideration for general health. Their wide range of supplements cover everything from sports supplements to supplements for general health and wellbeing, making them one of the most versatile brands operating today.

Reflex Nutrition Key Supplements

Even with such a diverse range of products Reflex have still managed to produce a number of category leaders. Reflex One Stop Xtreme is one of the most popular weight gainers available and delivers outstanding results every time. This all in one is immense for gaining strength and size and is a must try for anyone looking to add some bulk.

Reflex also have a number of key supplements in other categories. Their 100% Whey Protein is known for its high quality and great taste, while their Thermo Fusion fat burner is one of our most popular products in the category.


We will take every effort to get you goods to you as efficiently and effectively as possible. All orders placed before 3pm will be shipped on the day of ordering subject to payment authorization and item availability.

Any items which are out of stock will be shipped as soon as they become available. If this causes a delay in your delivery, you will be notified and your order dispatched as soon as possible. If any items are unavailable, you will be contacted and offered a replacement or refund.

UK Delivery

If your order total is under Ā£40 then you can choose one of:

  • Royal Mail Tracked - Ā£2.95
    (1-3 Working Days)
  • DPD Next Day - Ā£4.95
    (Guaranteed Next Working Day + 1 Hour Delivery Window)

If your order total is over Ā£40 then you can choose

  • Royal Mail Tracked - FREE
  • DPD Next Day -1/2 Price - Only Ā£2.49

Please be aware that the prices above are for areas classed as "UK Mainland" by DPD which does NOT include offshore islands, Scottish highlands or Northern Ireland.

Non-UK Delivery

Our website has a comprehensive postage system which takes into account the weight of your delivery and the destination address - to get a quote for your order please add the products you'd like to buy to your basket, go to the basket page and fill in the "Estimate Shipping & Tax" section to get the price.

BFPO Addresses

This shipping method is available for British Forces Posted Overseas and addresses only. Shipping is as with all other UK mailing but please check to see that the size and weight of your order does not exceed maximums for your BFPO destination number by checking with the BFPO website.

Please note that once we have shipped the item and handed over to the BFPO service we have fulfilled our contract and delivery responsibility. All queries and problems with delivery must be taken up by yourself with BFPO and any claims must be handled between yourself and them.

VAT Exempt

If this applies to you, the price you will pay for the goods will automatically be adjusted to remove the VAT element - you MUST choose the correct country on checkout for this to apply. We CANNOT refund the VAT once the order is completed.

You can also avoid paying VAT if you are having your goods sent to you in the UK, but are taking the goods abroad permanently within 3 months of making the purchase. You will have to pay the VAT with your order but by following the steps outlined you can reclaim the VAT from us:

Request a VAT Reclaim form from us; give us a call or email immediately after ordering. We will complete the relevant parts of this form before sending it to you with your goods. You will then take the form with you and the goods when you leave the UK and you should ask customs to fill in their section of the form at the airport, ferry terminal or channel tunnel when you leave the country.

When you reach your destination outside the EU, you can then send the completed form back to us and we will refund the VAT amount charged to the credit or debit card details you have filled in on the reclaim form


We stock the vast majority of products listed on our website in our Whitley Bay superstore and warehouse and these products are available for same day dispatch & next day delivery.

Due to the huge quantity of products we stock, we offer the ability to backorder products which have gone out of stock and less popular products which we don't carry stock of.

Depending on the brand these backorder products can take anywhere between 1 and 10 days to arrive into stock. We estimate 3-5 working days on average but please be aware that products from some brands can take a little longer

As always if you aren't sure or want a more accurate estimate just give our team a call or email!


You can return any product that is in an UNOPENED, RE-SALEABLE condition within 30 days as long as it is not marked as clearance. Please contact us before doing this so we can confirm this ahead of time - we recommend using a recorded delivery service for any returns as you will be responsible for ensuring it reaches us.

Please get in touch to confirm a return by email or phone before sending anything back. When sending a return it is important that you include:

  • Your order number
  • Your name & a contact telephone number
  • The reason for return

We will try and get your return processed as quickly as possible but if you don't send this information it can delay the return.


If you have ordered something and it doesn't fit then we can exchange for a more suitable size, stock permitting, but you will have to pay the return postage.


Our customers have the right to cancel their orders within 14 days unless their order has been dispatched. After the order has been dispatched, it is the customers responsibility to return the item in a saleable condition and receieve either a full or partial refund.

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