Rule1 Naturally Flavored R1 Whey Isolate Protein
Rule1 Naturally Flavored R1 Whey Isolate — Ultra-Clean 25g Protein, No Artificial Anything
Rule1 R1 Naturally Flavored Whey Isolate is one of the cleanest whey protein powders on the market — built from super-pure whey isolate and fast-acting hydrolyzed whey isolate with absolutely nothing artificial. No artificial flavours, no synthetic colorings, no artificial sweeteners, no whey concentrates, no amino spiking, no gums or creamers, no gluten, and virtually no lactose or cholesterol. Just 25 grams of premium protein, 6 grams of naturally occurring BCAAs, and 12 grams of EAAs per serving — sweetened only with stevia, certified clean by Informed Choice.
Supplement Facts (Per Serving)
| Nutrient | Per Serving |
|---|---|
| Calories | 110 |
| Total Fat | 0 g |
| Total Carbohydrates | 2 g |
| Protein | 25 g |
| BCAAs (naturally occurring) | 6 g |
| EAAs (naturally occurring) | 12 g |
Key Benefits
- 25g Protein / 110 Calories: An excellent protein-to-calorie ratio — 25g of protein for just 110 calories, with 0g fat and 2g carbs. Perfect for athletes managing body composition while maximizing muscle protein synthesis.
- 100% from Isolate & Hydrolyzed Isolate Sources: Rule1 uses only the most processed, highest-purity forms of whey — no whey concentrate filler which adds lactose, fat, and carbohydrates. The result is an ultra-clean, fast-absorbing protein source.
- 6g BCAAs + 12g EAAs (Naturally Occurring): Whey isolate is naturally rich in branched-chain amino acids (Leucine, Isoleucine, Valine) and all 9 essential amino acids. Rule1 does not use free-form amino acids to inflate their amino acid content — all 6g BCAAs and 12g EAAs come naturally from the whey isolate itself.
- No Amino Spiking: Some brands add cheap free-form amino acids (like glycine, taurine) to artificially inflate the protein reading on a standard nitrogen-content test. Rule1 explicitly does not do this — every gram of protein is genuine, complete whey protein.
- Stevia Sweetened — No Artificial Sweeteners: Naturally Flavored R1 uses stevia as its only sweetener — no sucralose, aspartame, or acesulfame potassium. Also made without artificial flavours or synthetic colorings.
- Informed Choice Certified: Independently tested by LGC for banned substances. Safe for competitive athletes in any drug-tested sport.
Best For
- Athletes and fitness enthusiasts seeking the highest purity whey protein available
- Individuals who prefer naturally sweetened and naturally flavoured protein powders
- Those with lactose sensitivity (virtually lactose-free) or cholesterol concerns
- Competitive athletes requiring Informed Choice certified, banned-substance-tested protein
- Anyone prioritizing clean-label nutrition with transparent, no-additive formulas
Not Ideal For
- Vegans — sourced from bovine whey
- Those with severe dairy or milk protein allergies
- Anyone looking for a high-calorie mass-gainer formula
Product Details
| Protein per Serving | 25 g |
| Protein Source | Whey Protein Isolate + Hydrolyzed Whey Protein Isolate |
| Sweetener | Stevia Leaf Extract (no artificial sweeteners) |
| Flavours | Naturally Flavored Dark Chocolate · Naturally Flavored Pure Vanilla |
| Certification | Informed Choice Certified · GMP Certified |
| Free From | Artificial Flavours · Artificial Sweeteners · Synthetic Colorings · Gluten · Amino Spiking · Whey Concentrate |
Suggested Use
Mix one scoop with 6–8 oz of cold water, milk, or your preferred beverage. Works well post-workout, first thing in the morning, between meals, or any time you need a clean, high-protein option.
Who Is This For?
Rule 1 protein is designed for athletes, gym-goers, and active adults who need convenient, high-quality protein to support muscle repair and growth. It works as a post-workout shake, a between-meals protein boost, or a quick breakfast option when whole-food protein is impractical.
Who Is This NOT For?
Not recommended for individuals with dairy allergies or lactose intolerance (unless specifically formulated as dairy-free). Always check the label for allergen declarations before use.
Why Buy From Bulldog Nutrition?
Bulldog Nutrition is an authorized Canadian and US retailer of Rule 1 products. We source directly from the brand — never from grey market or unauthorized distributors — so every order is genuine and fresh.
- ✓ Authorized Rule 1 retailer — authentic products only, never grey market or counterfeit
- ✓ Ships across Canada and the US — fast, reliable delivery to your door
- ✓ 10+ years in business — a track record you can rely on
- ✓ 4.7/5 stars from 2,400+ verified customer reviews
- ✓ Ongoing support available — reach us anytime via email or live chat
Shipping Information
Bulldog Nutrition ships across Canada and the United States. Most orders are processed within 1 to 2 business days.
Free shipping is available on eligible orders over $100. Please note that drink cases are excluded from free shipping due to size and weight.
During extreme hot or cold weather, heat-sensitive or cold-sensitive items may be affected in transit. For full details, please review our Shipping Policy.
Product & Site Disclaimer
Website information is provided for general informational purposes only. Product details, images, ingredients, and labels may change without notice, so customers should always review the actual product packaging received before use. For full details, please review our Product & Site Disclaimer.
Need Help?
For the fastest assistance, please use Live Chat on our website. You can also text SUPPORT to 1-833-497-3885 or use our Contact Us page for order, shipping, returns, and general support questions.