- -10%
Naturally Flavored R1 Protein Whey Isolate is made with super-pure whey isolate, fast-acting partially hydrolyzed whey isolate, and virtually nothing else. This elite formula completely omits the use of whey protein concentrates, creamers, amino spiking, banned substances, and other things that dilute what you really came for – protein. Even better, it delivers great taste, naturally.
- No artificial flavors
- Sweetened with stevia
- 25g fast-acting protein†
- 100% of protein from whey isolates and hydrolysate isolates
- 6g+ BCAAs†^^
Informed Choice® Certified.
Regularly tested for banned substances by the world class sports anti-doping lab, LGC.
† Per serving
* 100% of protein from whey isolate.
^^ Amino acids are naturally occurring.◆ When used consistently over time and combined with diet and exercise.
Nutrition facts may vary slightly depending on packaging.
WHEN & HOW TO USE IT
Anytime
Before or after workouts, first thing in the morning, or between meals, Naturally Flavored R1 Protein Whey Isolate is a great go-to whenever you want to add quick, high-quality protein to your daily routine.
Directions: Mix about one scoop of Naturally Flavored R1 Protein Whey Isolate with 6–8 oz. of cold water, milk, or your favorite beverage in a shaker cup or a glass with a spoon. For added variety, blend into smoothies, bake into your favorite recipes, or stir into cereal, yogurt, oats, puddings, or even savory meals!
- Made
- UK
- On promotion
- SI
Rule One (R1) stands as a benchmark in advanced sports nutrition, guided by the philosophy “Better Input = Better Output” — meaning that only the highest-quality ingredients can deliver outstanding results.
What sets it apart:
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End-to-end production control: every supplement is formulated in-house, using carefully sourced raw materials. Blending and packaging take place in a 250,000 ft² facility equipped with advanced measuring, mixing, and packaging technologies.
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Uncompromising quality: Rule One leaves nothing to chance — engineering, inspections, and testing are embedded in the process, supported by a dedicated distribution center to guarantee fast and reliable deliveries.
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Independent certifications: beyond in-house checks, products are verified by third-party organizations to ensure integrity and compliance. Certifications such as Informed Choice® confirm that products are free from banned substances.
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Credibility and expertise: the founding team brings decades of experience in the field, including backgrounds in leading brands such as Optimum Nutrition. Established in 2014 and headquartered in Aurora, Illinois, the company combines technical know-how, passion for sports, and a modern market vision.
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| Flavour: | Dark Chocolate Pure Vanilla |

