Reflex One Stop Xtreme – 4.35kg

Add to wishlistAdded to wishlistRemoved from wishlist 0
Add to compare

Reflex One Stop Xtreme – 4.35kg

Let’s cut to the chase: with so many protein shakes on the market, you’re going to want to know what makes Reflex One Stop Xtreme different. Even after removing some “dodgy looking” reviews, this product still scored a phenomenal 4.9 out of 5 stars! Read on to find out more, watch some videos, and find out what makes this mass gainer so popular and well loved!

Firstly, you should know that this product is an all-in-one protein supplement.

All-in-one protein supplements are designed to pack all the ingredients needed to help improve training performance and recovery. Instead of buying separate products such as BCAAs and creatine, these supplements already contain suitable doses.

One Stop Xtreme Key Facts, Nutrients & Ingredients

The list of ingredients for Reflex Nutrition’s One Stop Extreme is – well – extreme! Maybe “exhaustive” is a better word, as you would probably need a recovery shake to revitalise after reading them and researching them all.

At the end of the day, if you’re looking for a product that contains just about everything you’ve read about in fitness magazines – this is it! We’ve been helpful by linking out to some info and studies which you might find useful. So, here are the highlights:

  • 55 grams of protein in each serving. The protein is blended from whey protein concentrate, milk protein and casein protein. Not sure how much protein you need? Check out Fitness Savvy’s unique protein calculator.
  • Batch lab tested for protein content
  • Organic, low GI carbs (organic oats and barley).
  • Naturally occurring vitamins
  • 3 grams of leucine
  • 10.5 grams of BCAAs
  • 5 grams of Creapure creatine monohydrate
  • Beta-alanine
  • 10 grams of glutamine
  • Magnesium & zinc
  • Stable probiotics and digestive enzymes

Reflex One Stop Xtreme is a vegetarian product, but it is not suitable for vegans or coeliacs.

Reflex Nutrition Discount Codes

If you want to save more on Reflex Nutrition products, then check out the offers below. We’ve added discount codes to get you even better deals on your favourite supplements and protein shakes.

No coupons found.

Reflex One Stop Xtreme Reviews and Videos

As usual, Fitness Savvy has taken a look online at as many reviews as we could find. It was difficult to get a proper score out of 5, as many of the lower rated reviews were old, and some on the Reflex Nutrition website looked a bit dodgy! It also looks as though some people have been reviewing it on multiple sites (one user keeps mentioning their Tanita scales, and how they packed on 3kg of muscle in a few weeks).

We excluded reviews we weren’t sure were real. Even then it ended up with an insane 4.9 out of 5!

  • Several users reported noticeable increases in muscle growth since using One Stop Xtreme
  • Great taste
  • Competitively priced
  • Nutritionally complete
  • Gentle on the stomach compared with other all-in-one protein shakes

  • Scoop is ridiculously big!
  • Too sweet for a few users
  • Doesn’t mix as well as other all-in-one shakes

Specification: Reflex One Stop Xtreme – 4.35kg


Chocolate, Strawberry, Vanilla


Reflex Nutrition

Primary Protein Form


BCAA Per Serving






Creatine Per Serving



Halal, Vegetarian

Fat Per Serving


Calories Per Serving


Protein Per Serving


Carbs Per Serving


Macro Ratio (Protein, Carbs, Fat)


Glutamine Per Serving





Premium Protein Blend (42% – of which Whey Protein Concentrate [71%] [MILK], Native MILK Protein (29% – of which 80% Micellar Casein, 20% Native Whey Protein), Low GI Carbohydrate Complex (20% – of which OAT Flour [50%], BARLEY Flour [10%]), Maltodextrin, Glutamine Peptides [WHEAT], Cocoa Powder (chocolate varieties only), Creatine Monohydrate (Creapure®), L-Leucine, Betaine Anhydrous, Flavourings, Beta Alanine, L-Taurine, Magnesium Bisglycinate, Thickener (Carboxymethyl Cellulose), L-Choline Bitartrate, Natural Colouring (Betanin [strawberry flavour only]), Enzyme Complex (Digezyme®), Sweetener (Sucralose), L-Ascorbic Acid, Colour (Beta Carotene [vanilla flavour only]), Sweetener (Stevia), Zinc Bisglycinate, Tocotrienols (DeltaGold®), Iron Bisglycinate, Multi Component Protected Lactic Acid Bacteria (LAB2PRO® [Bifidobacterium Bifidum, Lactobacillus Acidophilus, Lactobacillus Rhamnosus]), Nicotinamide, Coper Bisglycinate, Natural Colouring (Anthocyanin [strawberry flavour only]), Selenomethionine (Selenium SeLECT®), Piperine Extract (Bioperine®), Retinyl Acetate, D-Calcium Pantothenate, Cholecalciferol, Pyridoxine Hydrochloride, Thiamine Hydrochloride, Riboflavin, Chromium Picolinate, Folic Acid, D-Biotin, Methylcobalamin.



Be the first to review “Reflex One Stop Xtreme – 4.35kg”

Your email address will not be published. Required fields are marked *

There are no reviews yet.

Related Products

Added to wishlistRemoved from wishlist 0
Add to compare
Warrior Princess Rise Diet Whey Protein Formula – 750g
Added to wishlistRemoved from wishlist 0
Add to compare
Reflex One Stop Xtreme – 2.03/4.35kg
(266 customer reviews)

Reflex One Stop Xtreme – 2.03/4.35kg

From £25.95
Added to wishlistRemoved from wishlist 1
Add to compare
Optimum Nutrition Gold Standard Whey – 908g
(2 customer reviews)

Optimum Nutrition Gold Standard Whey – 908g

From £19.99
Compare items
  • Total (0)