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Reflex Nutrition One Stop Xtreme

Name: Reflex Nutrition One Stop Xtreme
Rating: 4.70 (80 reviews)

£44.99

Free Delivery When You Spend £100

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Gain size and strength faster with 55g complete protein plus 5g Creapure creatine in every serving.
Train hard without the crash—73g low‑GI carbs deliver steady, reliable fuel for intense sessions.
Recover like a pro with 10.3g BCAAs, 10g glutamine peptides and beta‑alanine to back up your next workout.
All‑in‑one convenience: protein, carbs, creatine, aminos, vitamins, enzymes and probiotics in one shake.
Premium quality you can trust: grass‑fed whey, Informed‑Sport registered site, Halal‑certified, no added sugars or artificial colours.

Reflex Nutrition One Stop Xtreme 4.3kg – Vanilla

If you’re serious about adding size, strength and performance—but short on time—Reflex Nutrition One Stop Xtreme is your shortcut to consistent progress. This all‑in‑one mass gainer brings together grass‑fed whey protein, low‑GI carbohydrates and Creapure creatine with a smart matrix of recovery aminos, vitamins, enzymes and probiotics. The result? A high‑calorie, high‑quality bulking shake that replaces multiple supplements and keeps your nutrition dialled in with zero hassle.

Built for lifters who want results

Push more weight, add more reps: A clinically researched 5,000mg of Creapure creatine supports performance in repeated high‑intensity efforts—ideal for heavy sets and progressive overload.

Recover stronger between sessions: With 55g complete protein, 10.3g BCAAs and 10,000mg glutamine peptides, One Stop Xtreme helps repair hard‑worked muscle so you can come back ready to train.

Fuel that goes the distance: 73g of low‑GI carbs deliver smooth, sustained energy to replenish glycogen without the sugar spikes—perfect post‑workout or between meals during a bulk.

Easy on the stomach: DigeZyme digestive enzymes and LactoSpore probiotics make this a daily shake that’s comfortable to use, day in, day out. No added sugars, no artificial colours, and no soy protein.

Athlete‑ready quality: Produced on an Informed‑Sport registered site, suitable for vegetarians and made on a Halal‑certified site using grass‑fed whey—it’s premium nutrition that fits a serious training plan.

Who should choose One Stop Xtreme?

Hard gainers who need a reliable calorie and protein hit to grow.
Strength and power athletes chasing new PRs and consistent progression.
Team sport players who want to recover faster between matches and training.
Busy lifters who want one product that replaces multiple supplements.

Great taste, zero faff

The classic Vanilla flavour mixes smoothly with water or milk for a creamy shake you’ll look forward to. Use it post‑workout to kick‑start recovery, or as a convenient high‑calorie top‑up between meals.

Nutritional Information

Each serving of Reflex Nutrition One Stop Xtreme contains:

Total Calories: 570
Protein: 55g
Carbohydrates: 72g
- Sugars: 9.6g
- Dietary Fibre: 3.9g
Total Fat: 6g
- Saturates: 3.6g
Sodium: 225MG
Beta Alanine: 1,800MG
Creatine Mono’ (Creapure): 5,000mg
Glutamine Peptides: 10,000mg
Glycine: 2,500MG
BCAAs: 10,500MG
L-Leucine (free form): 3,000mg
Taurine: 1,500MG
Avena Sativa: 500MG
Magnesium: 150MG
Zinc: 7.5MG
Vitamin A: 400μg
Vitamin D3: 7.5μg
Tocotrienols (DeltaGold): 7.5MG
Vitamin C: 100MG
Vitamin B1: 1.6mg
Vitamin B2: 1.6mg
Niacin: 9mg
Vitamin B6: 1.6mg
Folic Acid: 100μg
Vitamin B12: 1.2μg
Biotin: 80μg
Pantothenic Acid: 3mg
Potassium: 160mg
Calcium: 195MG
Phosphorus: 117mg
Iron: 2.3mg
Copper: 801μg
Selenium: 27μg
Chromium: 50μg
Choline: 100MG
Piperine (BioPerine): 5MG
Digestive Enzymes (Digezyme): 145MG
Probiotic Spores (LactoSpore): 145,000,000

How to use

Mix one serving (4.5 scoops/145g) with cold water or milk and enjoy 1–2 times per day. Ideal after training and/or between meals to top up protein, carbs and creatine intake as part of a balanced diet and training plan.

More Information

Introducing the 4.35kg tub of Reflex Nutrition One Stop Xtreme Vanilla, perfect for post-workout recovery and muscle growth support.

This product is barcode: 5033579013091.

Protein 19g g

0%

RDI

Fat 0.5g g

0%

RDI

Salt 0 g

0%

RDI

Carbs 7.5g g

0%

RDI

Values per serving

Please note that this information may be subject to change.
For the most accurate and up-to-date details, please refer to the product packaging.

Expiry

2.03kg / Strawberries & Cream 31-07-2027

2.03kg / Vanilla Ice Cream 30-06-2027

4.35kg / Blueberry 31-12-2026

4.35kg / Salted Caramel 31-05-2027

4.3kg / Strawberries & Cream 30-09-2027

4.3kg / Vanilla 31-01-2027

Barcodes

2.03kg / Chocolate Perfection 5033579013114

2.03kg / Strawberries & Cream 5033579013121

2.03kg / Vanilla Ice Cream 5033579013138

4.35kg / Blueberry 5033579001883

4.35kg / Salted Caramel 5033579001890

4.3kg / Chocolate Perfection 5033579013077

4.3kg / Cookies & Cream 5033579013152

4.3kg / Strawberries & Cream 5033579013084

4.3kg / Vanilla 5033579013091

Directions

Warnings

Ingredients

Citrulline Malate
Branched-Chain Amino Acid Blend (L-Leucine
L-Isoleucine
L-Valine
Emulsifier (Sunflower Lecithin))
Beta Alanine
Maltodextrin
Betaine Anhydrous
L-Carnitine L-Tartrate
Flavouring
L-Taurine (L-Taurine
Anti-Caking Agent (Silicon Dioxide))
Sodium Bicarbonate
Sweetener (Steviol Glycosides)
Colour (Betanin)
Anti-Caking Agents (Calcium Silicate
Silicon Dioxide)
Colour (Carotenes)
Grape Seed Extract
Pine Bark Extract
Vitamin B12 (Maltodextrin
Anti-Caking Agent (Calcium Silicate)
Methylcobalamin)
Vitamin B6 (Pyridoxine Hydrochloride). Folic Acid (Pteroylmonoglutamic Acid
Maltodextrin). Please Note: Nutritional facts and ingredients may vary slightly between flavours.

Discover

Shop The Reflex Nutrition Collection

5 stars: 64 (80%)
4 stars: 8 (10%)
3 stars: 8 (10%)
2 stars: 0 (0%)
1 star: 0 (0%)

Good taste protein, recommend it!

Good stuff, i like it. Very fast delivery, good blueberry taste, right price. Prop seller!

The best

Like all reflex supplements this product is the best.

I think it's working.

Flavour is fine. I've started lifting and taking these, and I've gained muscle. I don't know how much the protein powder matters compared to how much lifting matters, but the combination of them definitely works.

Reflex

Good protein being using on and off due to not having time for gym but protein is good

Good taste protein, recommend it!

Good stuff, i like it. Very fast delivery, good blueberry taste, right price. Prop seller!

Reflex

Good protein being using on and off due to not having time for gym but protein is good

Flavour is lacking

Although this is marketed as Vanilla Ice Cream it does not have a strong vanilla taste like a number of other protein brands I have tried. The protein content is good and the packaging is also good. The scoop that comes with the product is extremely large and quite difficult to get out of the hole whilst full of protein

The best

Like all reflex supplements this product is the best.

A good meal replacement, especially post workout

I think this is a very good product. It mixes nice and easy, smells good and provides sufficient calories and macro nutrient content. You'll get a good size tub for the money which I think makes it pretty good value, although if you were going to take two shakes a day, you would find it quite expensive. I personally didn't experience any stomach issues, but this is a heavy product with a lot of ingredients so some people may find they do. Obviously an item like this is designed to be taken over a long period of time so I cannot comment on its effectiveness but used correctly it would be an excellent addition to any regimen.

A good meal replacement, especially post workout

I think this is a very good product. It mixes nice and easy, smells good and provides sufficient calories and macro nutrient content. You'll get a good size tub for the money which I think makes it pretty good value, although if you were going to take two shakes a day, you would find it quite expensive. I personally didn't experience any stomach issues, but this is a heavy product with a lot of ingredients so some people may find they do. Obviously an item like this is designed to be taken over a long period of time so I cannot comment on its effectiveness but used correctly it would be an excellent addition to any regimen.

Classic

Just as good as when I started using this in 2011!

Highly recommended

Love these chocolate and strawberry and cookies are best flavours after a few days of having the shakes i know the difference in my self i feel so much better all round health wise energy strength concentration etc

The best

Like all reflex supplements this product is the best.

Classic

Just as good as when I started using this in 2011!

A good meal replacement, especially post workout

I think this is a very good product. It mixes nice and easy, smells good and provides sufficient calories and macro nutrient content. You'll get a good size tub for the money which I think makes it pretty good value, although if you were going to take two shakes a day, you would find it quite expensive. I personally didn't experience any stomach issues, but this is a heavy product with a lot of ingredients so some people may find they do. Obviously an item like this is designed to be taken over a long period of time so I cannot comment on its effectiveness but used correctly it would be an excellent addition to any regimen.

A good meal replacement, especially post workout

I think this is a very good product. It mixes nice and easy, smells good and provides sufficient calories and macro nutrient content. You'll get a good size tub for the money which I think makes it pretty good value, although if you were going to take two shakes a day, you would find it quite expensive. I personally didn't experience any stomach issues, but this is a heavy product with a lot of ingredients so some people may find they do. Obviously an item like this is designed to be taken over a long period of time so I cannot comment on its effectiveness but used correctly it would be an excellent addition to any regimen.

The best

Like all reflex supplements this product is the best.

Excellent stuff, i have done my webwork checked out ...

Excellent stuff, i have done my webwork checked out levels combo's of minerals and bcaa's through to creatine mixes this stacks up seriously good easy to mix good strong flavour but not sickly easy to consume on an empty stomach and has nice milkshake consistency. can easily be drank in the morning and pre workout and after the workout again great levels of bcaa and creataine as a stand alone this can save you money as it contains everything you need in one supplement and it really has shown results after consumption after a good workout. can only recommend this as it does exactly what it says. any questions drop me a message

its a great product that really help me push through my prs

its a great product that really help me push through my prs. i went from bench pressing 140 to 160 in 2 months on this product. i was stuck on 140 for ages like 6 months until i used Reflex.

cons: its rubbish in taste and doesn't shake all that well hence 4 stars but does the job really well. its also a quality product and probably the best all in one supplement out there.

does give some gas sometimes but not as bad as other products. i will be buying again but i would say use one shake a day not two as one is more than enough to feed your body anything else is probably going to be a waste. this way it will also last 2 months and u'll still make serious gains

Flavour is lacking

Although this is marketed as Vanilla Ice Cream it does not have a strong vanilla taste like a number of other protein brands I have tried. The protein content is good and the packaging is also good. The scoop that comes with the product is extremely large and quite difficult to get out of the hole whilst full of protein

Highly recommended

Love these chocolate and strawberry and cookies are best flavours after a few days of having the shakes i know the difference in my self i feel so much better all round health wise energy strength concentration etc

Flavour is lacking

Although this is marketed as Vanilla Ice Cream it does not have a strong vanilla taste like a number of other protein brands I have tried. The protein content is good and the packaging is also good. The scoop that comes with the product is extremely large and quite difficult to get out of the hole whilst full of protein

A good meal replacement, especially post workout

I think this is a very good product. It mixes nice and easy, smells good and provides sufficient calories and macro nutrient content. You'll get a good size tub for the money which I think makes it pretty good value, although if you were going to take two shakes a day, you would find it quite expensive. I personally didn't experience any stomach issues, but this is a heavy product with a lot of ingredients so some people may find they do. Obviously an item like this is designed to be taken over a long period of time so I cannot comment on its effectiveness but used correctly it would be an excellent addition to any regimen.

Reflex

Good protein being using on and off due to not having time for gym but protein is good

A good meal replacement, especially post workout

I think this is a very good product. It mixes nice and easy, smells good and provides sufficient calories and macro nutrient content. You'll get a good size tub for the money which I think makes it pretty good value, although if you were going to take two shakes a day, you would find it quite expensive. I personally didn't experience any stomach issues, but this is a heavy product with a lot of ingredients so some people may find they do. Obviously an item like this is designed to be taken over a long period of time so I cannot comment on its effectiveness but used correctly it would be an excellent addition to any regimen.

Classic

Just as good as when I started using this in 2011!

I think it's working.

Flavour is fine. I've started lifting and taking these, and I've gained muscle. I don't know how much the protein powder matters compared to how much lifting matters, but the combination of them definitely works.

Excellent stuff, i have done my webwork checked out ...

Excellent stuff, i have done my webwork checked out levels combo's of minerals and bcaa's through to creatine mixes this stacks up seriously good easy to mix good strong flavour but not sickly easy to consume on an empty stomach and has nice milkshake consistency. can easily be drank in the morning and pre workout and after the workout again great levels of bcaa and creataine as a stand alone this can save you money as it contains everything you need in one supplement and it really has shown results after consumption after a good workout. can only recommend this as it does exactly what it says. any questions drop me a message

The best

Like all reflex supplements this product is the best.

Flavour is lacking

Although this is marketed as Vanilla Ice Cream it does not have a strong vanilla taste like a number of other protein brands I have tried. The protein content is good and the packaging is also good. The scoop that comes with the product is extremely large and quite difficult to get out of the hole whilst full of protein