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20g of protein from fast-absorbing whey isolate and hydrolysed collagen peptides —delicious, sparkling and sugar-free
20g protein from fast-absorbing whey isolate + hydrolysed collagen peptides
2200mg BCAAs + 2400mg L-glutamine for recovery on the go
Free from sugar, lactose and fat — around 100 calories, lightly sparkling
Added vitamin C, lightly sparkling and genuinely refreshing
Description
SPORT Rx Protein Ready-to-Drink delivers 20g of protein from fast-absorbing whey isolate and hydrolysed collagen peptides — supporting muscle and connective tissue recovery the moment your session ends. No prep, no powder, no excuses.
Lightly sparkling, refreshing and free from sugar, lactose and fat, with added vitamin C and around 100 calories per can. The recovery habit that survives real life.
Ingredients
Active ingredients per 300ml can:
- Protein (whey isolate + hydrolysed collagen peptides) — 20g
- BCAAs — 2200mg
- L-glutamine — 2400mg
- Vitamin C
Product Benefits
Whey Isolate + Collagen (20g)
- Supports muscle and connective tissue repair and growth
- Fast-absorbing protein when timing matters
BCAAs + L-Glutamine
- Support recovery on the go
- Help protect lean muscle post-session
Vitamin C
- Supports immune function and collagen synthesis
Directions + Warnings
Serve chilled. Refrigerate after opening and consume within 48 hours.
WARNINGS: This product is not intended to diagnose, treat, cure or prevent any disease. Not a sole source of nutrition — use alongside a balanced diet and training programme. Pregnant or nursing mothers, individuals under 18 and those with a known medical condition should consult a healthcare professional before use. Store in a cool, dry place. Keep out of reach of children.
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Protein RTD — Sparkling Whey & Collagen Protein Drink
Only 100 calories per serving
20 g Clear Protein Ready-to-Drink
Timing is one of the most discussed variables in sports nutrition — and for good reason. The post-workout period represents an important window during which the body is particularly receptive to protein for muscle repair and recovery. Protein Ready-to-Drink is designed to ensure that this window is never missed because of inconvenience. Each bottle delivers 20 grams of premium protein from a blend of whey isolate — selected for its high protein purity and fast absorption — and hydrolysed collagen peptides, which contribute not just amino acids but specifically the building blocks that support joint, tendon and connective tissue recovery alongside muscle repair.
With no preparation required and a format that fits in a gym bag, briefcase or car cupholder, Protein Ready-to-Drink removes every logistical barrier between the athlete and their post-workout nutrition.
Shop The Range
Protein Rx — All-In-One Protein Shake

Whey Isolate — High-Purity Protein for Fast Recovery
Whey protein isolate represents the purest form of whey protein — processed to remove the majority of fat and lactose, resulting in a protein source that is both high in protein by weight and rapidly absorbed. For post-workout recovery, where speed of amino acid delivery matters, whey isolate is one of the most effective protein sources available, and it forms the foundation of Sport Rx's ready-to-drink formulation.

Hydrolysed Collagen — A Unique Sports Nutrition Addition
The inclusion of hydrolysed collagen peptides alongside whey isolate in a ready-to-drink protein beverage is a deliberate and differentiating formulation choice by Sport Rx. Most ready-to-drink protein products focus solely on muscle recovery. By adding collagen, Sport Rx acknowledges that joint and connective tissue recovery are equally important parts of the athletic recovery equation — and uniquely valuable in the sport nutrition space.

Convenience Without Compromise
Sport Rx Protein Ready-to-Drink is a product where convenience and quality exist without trade-off. The same clean-label, no-banned-substances commitment that defines the entire Sport Rx range applies fully to the ready-to-drink format. Athletes who rely on these drinks for post-workout nutrition can do so with the same confidence they would have in any product from the broader Sport Rx stack.
The Protein RTD Difference
Hydration Meets Protein
Replenish fluids and muscle support with 20 grams of premium protein derived from hydrolysed bovine collagen and whey isolate in a water-based drink.
Low-Calorie & No Added Sugar
Less than 100 kcal per serving for all the benefits and none of the extras available in 4 delicious and refreshing flavours.
20 g High Biological Value Protein
Every serving contains a blend of whey protein isolate, pure hydrolysed collagen peptides (bovine, type I) and vitamin C, promoting lean muscle growth and repair.
Premium protein and collagen. Zero preparation. Sport Rx ready-to-drink — no excuses.
FAQs
Please read our FAQs page to find out more.
How much protein is in Protein Rx Ready-to-Drink?
Each 300 ml can contains 20 g of high-quality protein from whey protein isolate and hydrolysed collagen peptides.
Is Protein Rx Ready-to-Drink suitable for recovery after exercise?
Yes. The combination of protein, BCAAs, glutamine, and vitamin C makes it ideal for post-workout recovery support.
Is Protein Rx Ready-to-Drink sugar-free?
Yes. It is completely free from sugar and contains zero carbs and zero fat.
Is Protein Rx Ready-to-Drink lactose-free?
Yes. The drink is formulated to be lactose-free.
How many calories are in each serving?
Each serving contains only 100 calories, making it a convenient low-calorie protein option.
What protein sources are used in Protein Rx Ready-to-Drink?
The protein blend includes:
- Premium whey protein isolate
- Hydrolysed collagen peptides
Who are these Protein Ready-to-Drinks designed for?
These drinks include a high biological value, pure whey protein formulation that contains collagen, BCAAs and l-glutamine. It has been developed to provide the highest quality of supplemental protein possible to those engaged in weight training and other physically strenuous sports, as well as those who are looking to optimise their muscle recovery and lean muscle building efforts. Consumed after gym or intense training, our Protein Ready-to-Drinks provide all the essential and non-essential amino acids as well as bioactive peptides needed to fuel muscle recovery and growth. They are also suitable as a hydrating, satiating high protein drink for all individuals.
How can I store these drinks?
These cans can be stored in a cool place, and should be refrigerated and consumed within 48 hours of opening.
Are Protein Ready-to-Drinks safe for children?
Yes! The dairy-based protein formulation in these drinks combines high quality, milk-derived whey proteins (concentrate, isolate and hydrolysate) with a delicious flavouring system that is free from pharmaceutically active ingredients, or potentially harmful chemical ingredients. As highly active, sporting teens may not eat a sufficiently varied and nutritious diet, nor consume sufficient high quality proteins and amino acids to meet their body's recovery demands, our various sources of protein can offer valuable nutritional support to help them recover and perform at their best.
Can diabetics drink Protein Ready-to-Drinks?
Current recommendations for sugar intake in diabetics generally advise that daily sugar intake should not exceed 10% of daily energy intake. The UK Scientific Advisory Committee on Nutrition further advises that the need for this percentage to ideally be further reduced to 5%, which equates to 25 g of sugars in a 2000 kCal/day diet.
With the aforementioned in mind, our Protein RTDs are sugar-free and thus typically well-suited for consumption by diabetics. Diabetics are, however, always advised to factor their nutritional supplement’s carbohydrate and sugar content into their daily diet plan and continue to regularly monitor their blood glucose levels to ensure that it is maintained within the recommended range.
Are these safe to drink during pregnancy or breastfeeding?
These drinks are formulated entirely from natural ingredients that one would typically find in nutritious everyday whole foods, and contains no artificial sweeteners, colours or preservatives.
It is, however, always our recommendation for pregnant or lactating women to consult with their healthcare practitioner before embarking on any specific diet plan or using nutritional supplements to bolster their diets.
Are your products gluten-free?
All of our ingredients and products are gluten-free and prepared in a gluten-free environment. Our wheatgrass and barley grass are derived from the grasses of each plant (rather than the grain) and are naturally gluten-free. They have been independently tested to ensure they do not contain any traces of gluten.
Are these drinks vegan or vegetarian friendly?
Our Protein RTDs contain milk-derived whey protein and bovine collagen so are therefore unfortunately not suitable for vegans or vegetarians.
Are these drinks suitable for individuals with food allergies?
Our Protein RTDs products are formulated with ingredients free from allergens such as, soy, eggs, wheat (gluten), peanuts / tree nuts and seafood. However, they contain whey, so are therefore not suitable for those with a dairy allergy.
Can I drink Protein Ready-to-Drinks if I am on medication or have a medical condition?
Whilst our Protein RTDs are formulated with natural ingredients and are therefore not contraindicated with any medication, we always advise those with medical conditions or taking medication to seek advice from their medical practitioner before using any nutritional supplement.
Are Sport Rx products safe for athletes?
Our blends use 100% natural ingredients which have been formulated with athletes' performance and recovery in mind. They support your efforts naturally and contain no artificial or prohibited substances.






















