For athletes and fitness enthusiasts, supplement quality is just as important as training intensity. With concerns over banned substances and ingredient purity, choosing Informed Sport certified supplements ensures that you’re fueling your body with safe and effective products. These supplements undergo rigorous testing to meet professional sports standards, making them a reliable choice for competitive athletes.
At WheyOkay, we understand the importance of clean, high-performance nutrition. That’s why we’ve compiled this list of the top 5 Informed Sport certified supplements that every athlete should try to optimize performance, recovery, and muscle growth.
Why Does Informed Sport Certification Matter?
Informed Sport is a globally recognized quality assurance program that tests sports supplements for banned substances. Products with this certification ensure: ✔ No banned substances – Safe for professional and amateur athletes alike.
✔ Premium ingredient quality – Tested for contamination and impurities.
✔ Consistent formulation – Every batch is checked for accuracy.
✔ Trusted by athletes worldwide – Used by professional sports teams and Olympic competitors.
When choosing supplements, looking for the Informed Sport logo guarantees you’re using safe and effective products that won’t compromise your performance or career.
Top 5 Informed Sport Certified Supplements for Athletes
1. Per4m Whey Protein – Best for Muscle Growth
Why it’s great: This best protein powder in the UK provides 21g of high-quality whey protein per serving, perfect for muscle recovery and lean mass gain. With minimal sugar and high digestibility, it’s a go-to option for post-workout nutrition.
✔ Protein per serving: 21g
✔ Low sugar: 1.4g per serving
✔ Best for: Recovery & muscle growth
How to use: Mix one scoop with water or milk post-workout to fuel muscle repair.
2. Bulk Pure Whey Isolate – Best for Lean Muscle & Recovery
Why it’s great: With 26g of high-quality whey isolate, this supplement is ideal for athletes looking to gain lean muscle without excess carbs or fats. Plus, it’s low in lactose, making it easier to digest.
✔ Protein per serving: 26g
✔ Low sugar: Less than 1g
✔ Best for: Strength athletes & endurance trainers
How to use: Take post-workout or between meals to support protein intake.
3. GYM HIGH Plant-Based Protein – Best Vegan Protein Powder
Why it’s great: Finding a best vegan protein powder in the UK that’s both Informed Sport certified and nutritionally complete can be tricky. This blend combines pea and rice protein for a full amino acid profile, making it a fantastic choice for plant-based athletes.
✔ Protein per serving: 20g
✔ Low sugar: 1.2g
✔ Best for: Vegan athletes & muscle recovery
How to use: Blend with water or almond milk as a post-workout shake or meal replacement.
4. Grenade Carb Killa Protein Bars – Best On-the-Go Protein Source
Why it’s great: Perfect for athletes who need a quick and convenient protein snack without compromising quality. These bars are Informed Sport certified, low in sugar, and packed with protein.
✔ Protein per serving: 20g
✔ Low sugar: Less than 2g
✔ Best for: On-the-go muscle recovery
How to use: Ideal as a pre- or post-workout snack to curb cravings while meeting protein needs.
5. GYM HIGH Whey Pro Synergy – Best Low Sugar Protein Powder
Why it’s great: This best low sugar protein powder in the UK provides a high-protein, low-carb solution for athletes who want to maintain lean muscle. It contains added digestive enzymes for better absorption.
✔ Protein per serving: 25g
✔ Low sugar: 0.5g
✔ Best for: Strength training & muscle maintenance
How to use: Mix one scoop with cold water or milk post-workout or between meals.
Final Thoughts: Choose Safe & Effective Supplements for Maximum Performance
When it comes to athletic performance, quality matters. Choosing Informed Sport certified supplements ensures that you’re getting safe, high-quality nutrition to support your fitness goals. Whether you’re looking for the best protein powder in the UK, vegan options, or a low sugar alternative, these top five supplements offer something for every athlete.
At WheyOkay, we offer a range of trusted and tested sports nutrition products. Check out our collection and fuel your performance the right way!
👉 Which of these supplements have you tried? Let us know in the comments!