Strategic Fitness
0 Items for £0.00

Reflex One Stop Xtreme

One Stop Xtreme
15 years in existence, and now Reflex launch their most devastating product to date. One Stop Xtreme is the ultimate hardcore all in one mass gainer containing the unique Quattro protein blend


Rated 4.33 / 5 with 3 ratings



This mind blowing all in one weight gain supplement is the ultimate blend of macro-nutrients with added ingredients to provide ergogenic assistance to your training.

One Stop Extreme combines high quality nutrients with proven powerful supplements to make the penultimate all in one weight gain shake. Manufactured by Reflex nutrition, one stop extreme is simply amazing...Where else can you get a blend of low GI carbohydrates, world class leading high quality protein all mixed together with several stacks for strength, enhanced testosterone and improved muscle endurance?

The Quattro blend of protein is a time release formula with only the latest and greatest forms of protein, providing a huge quantity of amino acids and a large 55g portion of protein per serving! Added nitrogen containing compounds such as peptide bonded glutamine, L-leucine, creatine and many more enhance muscle recovery, strength and assist muscle hypertrophy greatly.

Furthering your muscle development and growth is the 70g+ of low GI carbs, filling your muscle bellies with glycogen and providing a sense of muscle fullness and thickness, as well as providing some more additional calories to help mass gain.

The testofusion stack is designed to maximise natural testosterone levels by proven compounds such as avena sativa as well as zinc and magnesium. By elevating natural test production you ensure that the mass you gain are not just lbs of bodyfat but instead good quality muscle. Regardless of this stack, reflex have produced this all in one shake to such a high standard with time release macronutrients it is unlikely you would acquire too much bodyfat anyway...however a testosterone boosting effect will also certainly benefit and put a smile on the face of any natural male bodybuilder.

To list everything present in Reflex One Stop extreme would far exceed my word limitation assigned to each write up, I could easily continue with the many more positive notes regarding this overwhelming supplement, however will have to state the final point as simply, this is honestly and truthfully the best all in one weight gain formula currently available. The competition better step up, otherwise this supplement will dominate the all in one market!

This product also features in the following categories:

Reflex Nutrition
Weight Gainers
All in One Supplements

Quattro® Protein Blend (Ultra Filtered Whey Protein Concentrate & Native Whey Protein Isolate, Hydrolysed Whey Protein (degree of hydrolysis 30%)

Hydrolysed Whey Protein (degree of hydrolysis 4%)

Milk Protein Concentrate)

Low GI Carbohydrate Blend (Organic Oat Flour, Organic Barley Flour, Trehalose)


XTREME Muscle & Strength Stack (Beta-Alanine, Creatine Monohydrate (Creapure®)

Peptide-Bonded Glutamine (derived from Wheat Protein)




TestoFusion® Stack (Avena Sativa, Magnesium Citrate, Zinc Monomethionine)

Natural Colourings (Fat-Reduced Cocoa Powder (Chocolate, Cinnamon and Banoffee varieties only)

Betanin (Fruit Berry varieties only)

Beta Carotene (Banoffee, Chocolate Peanut Butter and Vanilla varieties only)

Anthocyanin (Fruit Berry varieties only)


Emulsifier (Soya Lecithin)

Thickeners (Carboxymethyl Cellulose, Xanthan Gum)

Ascorbic Acid (Vitamin C)

L-Choline Bitartrate

Digezyme® Digestive Enzyme Complex (Amylase, Cellulase, Lactase, Lipase & Neutral Protease)

Artificial Sweeteners (Acesulfame K, Sucralose)

Tocotrienols as DeltaGold® (35% total Tocotrienols of which 84-95% Delta-Tocotrienols, 8-16% Gamma-Tocotrienols) obtained from Annatto

LactoSpore® Probiotics (Bacillus Coagulans)

Ferrous Bisglycinate

Niacin (Nicotinamide)

Copper Aspartate

L-Selenomethionine (Selenium SeLECT®)

Piperine Extract (BioPerine®)

Retinyl Acetate


Calcium D-Pantothenate


Thiamin Hydrochloride

Pyridoxine Hydrochloride

Chromium Picolinate

Folic Acid



Rated By: Paul O Rated 4
Got a sample of this and it tastes pretty good. The list of ingredients makes it more of a competitor to synergy than cyclone, but for my goals that makes it spot on. As with all the protein based products, reflex seems to be able to give you more for your money than anyone around

Rated By: Warrior Rated 4
The taste is really bland but that aside, it s an awesome product. I ll be buying again but I wish they could make it taste good, it s like drinking cardboard.

Rated By: marcus Rated 5
simply outstanding it simply is all in one!

Please give your own feedback and suggestions

Posted By: eagle Posted: 16/08/2011 15:13:42
I m about to start taking the Reflex OS Xtreme supplement as an all in one. Does this supplement give me the extra stamina necessary during training apart from reaching my goals of muscle gain, strength, and speed. I m about to take two scoops every day, one at 5pm i.e. one hour before training and one scoop at 9pm i.e. one hour after training. Is this right or do I need to change my timing unfortunately my training session hours are fixed from 6 till 8pm two times a week. What s your advise.

Posted By: Admin
Your protocol looks fine and yes, the beta-alanine includes in OS Xtreme definitely helps with stamina / endurance. You should enjoy the product greatly.

Posted By: Janaid Posted: 30/07/2012 08:36:00
Hi I was thinking of buying OSX or Kinetica oat gain to add some mass but not sure which one to get. Is OSX better because of it s ingredients and a better overall product

Posted By: Admin
Hi Janaid, One stop xtreme is the slightly healthier option because of the cleaner carb source but one stop xtreme is an all in one. Where kinetica's oat gain is a proper weight gainer designed to add lean muscular size alot faster then other products. If your looking to get quite alot of muscule i would go for the oat gain, if you prefered a more lean athletic build then i would recommend one stop xtreme.

Want to know something or just want our view? Please join in and ask your question..

Always Informed. Sign Up is operated by Strategic Fitness Ltd and incorporates and
Strategic Fitness Ltd is a UK registered company 09131492, VAT registration 197 0427 87.
All material and content copyright by