Science In Sport REGO Whey Protein Powder
by Science in Sport
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Science In Sport REGO Whey Protein Powder is a post-exercise recovery shake delivering 22g of whey protein concentrate (94%) and 2.8g of leucine per serving, aimed at athletes who prioritise trusted, Informed-Sport certified nutrition. Best for Endurance athletes (runners, cyclists) prioritising recovery and Recreational gym-goers seeking a trusted mainstream brand.
According to the AIScored 0–100 scoring system, Science In Sport REGO Whey Protein Powder by Science in Sport scores 73.0/100, ranking #70 out of 174 products in Whey Protein (2026). Strongest category: Certifications (88.0/100). Weakest: Value For Money (62.0/100).
Is Science In Sport REGO Whey Prote... worth buying?
“Science In Sport REGO scores 73/100 thanks to its 22g whey protein per serving and Informed-Sport certification, which competitive athletes can genuinely trust. You'll actually want to drink it because the chocolate and strawberry flavours taste like milkshakes and mix without any clumping.”
What Do Reviewers Say About Science In Sport REGO Whey Protein Powder?
Sample excerpts from currently available source material used in this product analysis.
"Llevo muchos años utilizando tanto la Whey como la Fast Regó y me van de maravilla, a parte que tienen el mejor sabor con diferencia"
"My favourite protein powder by far. For a chocolate protein powder it taste great. Love it as shake or with my overnight oats. Best after run recovery drink"
"'ve been a loyal PhD user for years, but their protein only packs 16g per serving and it's a whey blend that didn't quite cut it for me anymore. Switched to this Science In Sport REGO Whey Protein Powder in chocolate flavour, and it's a tot..."
"I am mixing it into yoghurt or kefir and finding it very easy to mix, I only need half a scoop and the strawberry flavour is lovely. Great price too"
"Good quality product and good value from a brand I trust, flavour can be a bit strong if you use the full scoop amount"
How does Science In Sport REGO Whey Protein Powder score?
Detailed score breakdown and key findings from our analysis of 11 reviews across 1 source.
Pros
- +Taste rated highly across chocolate and strawberry flavours — frequently compared to a milkshake
- +Good mixability with no clumping reported by most users
- +Informed-Sport certified — rigorous banned-substance testing trusted by competitive athletes
- +2.8g added L-leucine per serving supports muscle protein synthesis above the leucine threshold
- +Versatile use — works well mixed into yoghurt, kefir, or overnight oats, not just shakes
Cons
- -Price considered high by some users relative to comparable products on the market
- -Whey concentrate rather than isolate — higher lactose and fat content than premium isolate options
- -Flavour can be overpowering at a full scoop according to at least one reviewer
- -One report of a chemical/artificial aftertaste (possible batch or flavour sensitivity issue)
Best For
Watch Out
- !Contains milk — not suitable for dairy intolerance or vegan diets
- !Whey concentrate may cause digestive discomfort in lactose-sensitive individuals
- !Price-per-gram of protein is less competitive than budget whey concentrate alternatives
- !Only 15 servings per 460g bag — container runs out quickly for daily users
What is Science In Sport REGO Whey Protein Powder?
Science In Sport REGO Whey Protein Powder is a whey protein product by Science in Sport in powder form, scoring 73.0/100 on AIScored.
- • The SIS REGO Whey Protein powder provides 22g of quality whey protein per serving, perfect for repairing your body after shorter, less intense bursts of exercise.
- • Even for lighter workouts, your body needs quality protein to maintain muscle mass and promote growth.
- • Mix one scoop with 300ml of water and consume within 30-60 minutes after exercise to keep your body topped up on protein.
- • Experience the convenience and effectiveness of REGO Whey Protein.
- • Each serving delivers 22g of high-quality whey protein and 2.8g of leucine, supporting muscle repair and growth.
- • This easy-to-mix shake is packed with all nine essential amino acids, making it ideal for optimising recovery and maintaining muscle mass.
- • Whether you aim to build muscle or need a tasty, nutritious shake, REGO Whey Protein is your go-to choice.
- • All Science in Sport products are Informed-Sport certified, ensuring rigorous testing for banned substances and making it a trusted choice for elite athletes and fitness enthusiasts.
Is Science In Sport REGO Whey Protein Powder Independently Tested?
No Third-Party Testing Visible
We could not find evidence of independent third-party testing for this product. This doesn't mean it's unsafe, but independent verification provides additional assurance.
How We Score Supplements
Our methodology analyses review data, ingredient science, and product information, then scores each product on a 0-100 scale across evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on reviews and ingredient evidence.
Ingredient Quality
Bioavailable forms, clinically effective dosages, clean label, minimal fillers.
Value for Money
Price relative to ingredient quality, dosage count, and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 100 means virtually no adverse reactions reported.
Certifications & Testing
Third-party lab testing, GMP certification, and independent quality verification.
Overall Score
Weighted combination of all factors. Our bottom-line recommendation.
Price History (90 days)
Quick Facts
- Form
- Powder
- Serving
- 15 scoops
- Vegan
- No
Frequently Asked Questions
Is Science In Sport REGO Whey Protein Powder worth buying in 2026? ▼
What is the best price for Science In Sport REGO Whey Protein Powder in the UK? ▼
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Is Science In Sport REGO Whey Protein Powder third-party tested? ▼
What the Data Says About Whey Protein
What makes a clean whey protein? Ingredient quality scores across 169 UK products
Fewer ingredients = cleaner protein. We scored 169 whey proteins on ingredient quality (IQ) and the gap between top and bottom is massive: 65 points, from 95/100 down to 30/100.
The top 7 products by IQ all share one trait — minimal ingredient lists:
- PINK SUN Organic Whey Concentrate — IQ 95, overall 85
- Isopure Unflavoured Whey Isolate — IQ 91, overall 76
- LEGION Whey+ Isolate — IQ 91, overall 80
- PINK SUN Whey Isolate Unflavoured — IQ 91, overall 81
- Purition 100% Whey Isolate 93% Protein — IQ 91, overall 80
- Dymatize ISO100 — IQ 90, overall 84
- Naked Whey (1 ingredient) — IQ 90, overall 74
The bottom tells the opposite story. Products like BodyFuel Clear Protein (IQ 30), Amfit Nutrition (IQ 38), and Protein Dynamix 3XP (IQ 38) use multi-source protein blends padded with artificial sweeteners, thickeners, and colourings.
The average across all 169 products is 70.7/100. If your whey protein has more than 5-6 ingredients, check what's filling up that list. A clean whey needs protein, maybe a natural flavour, and not much else.
Can cheap whey protein cause bloating? What to check on the label
Cheap whey often causes bloating because of what's added to the protein, not the protein itself. We scored 169 whey proteins and the worst-scoring products share the same filler-heavy ingredient profiles.
Three categories of additives show up repeatedly in low-IQ products (scored 30-42):
- Thickeners — xanthan gum, carrageenan, cellulose gum. These bulk up texture but can cause gas and bloating in sensitive stomachs.
- Artificial sweeteners — sucralose, acesulfame-K, aspartame. Linked to gut microbiome disruption in some studies. Budget brands use these heavily.
- Anti-caking agents and emulsifiers — added to improve mixability, but another source of digestive irritation.
Products like BodyFuel Clear Protein (IQ 30), Amfit Nutrition (IQ 38), and SCI-MX Ultra Muscle (IQ 42) stack several of these additives together.
Compare that to the top scorers: PINK SUN Organic Whey (IQ 95) and Naked Whey (IQ 90) use 1-3 ingredients total. No thickeners, no artificial sweeteners, no fillers. Users report far less digestive trouble with these minimal formulas.
Label check shortcut: flip the tub over. If the ingredient list has more than 6 items, or you spot carrageenan, sucralose, or acesulfame-K, that's your likely bloating culprit. A whey isolate with a short list costs a bit more but your gut will thank you.
Disclaimer: AIScored provides research-backed summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Affiliate links may earn us a commission at no extra cost to you.
What Are Other Top Whey Protein?
Other top-rated whey protein you might want to compare.
100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g
Purition
50g High Protein Shake Chocolate 500ml
Optimum Nutrition
1kg unflavoured Protein Powder - unflavoured whey Protein Powder Perfect for a high Protein Shake or Snack - whey Nutrition for Building Muscle - 38g of Protein per Serving
Millidose
3XP Whey Protein Powder - Whey, Pea & Hydrolysed Wheat Blend for Lean Muscle Growth - Banana Flavour - 22g Protein • 127kcal Per Serving - 1Kg
Protein Dynamix
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