- -10%
BCAAs Rule One Proteins – simple, concentrated intra-workout support
If you want a straightforward amino acid supplement to use around training, BCAAs from Rule One Proteins delivers leucine, isoleucine, and valine in a 2:1:1 ratio. The brand focuses on formula transparency and a no-frills profile, making it easy to add branched-chain amino acids to your daily routine. You can choose unflavored or fruit-inspired flavors, so it fits naturally into your shake or supplement stack. The value is clear: a concentrated BCAA formula that is easy to mix and easy to use when your workout day needs it most.
Key Features
- 5 g of micronized BCAAs per serving for a direct branched-chain amino acid dose.
- 2:1:1 ratio of leucine, isoleucine, and valine as listed on the product page.
- Transparent formula with a minimal ingredient approach.
- Flexible format, available unflavored or in multiple fruit flavors.
- Versatile timing for before, during, or after training, and even morning or bedtime use.
- Easy to add to water, protein shakes, juice, or other workout supplements.
Technical Specifications
- Serving amount: 5 g micronized BCAAs.
- Amino acid ratio: 2:1:1 leucine, isoleucine, valine.
- Directions: 1 scoop mixed with 8-12 oz of cold water.
- Available sizes: 30 servings or 60 servings.
- Listed flavors: unflavored, blue raspberry, orange, fruit punch, pineapple, watermelon, grape, peach mango.
Use Case and Audience
This product is designed for people who train consistently and want a simple supplement to use pre-, intra-, or post-workout. The primary audience is you if you lift, do fitness training, or follow endurance sessions and want a practical BCAA option. It also works well if you prefer a clean formula that mixes easily into shakes or other drinks without complicating your routine.
Why Choose It
Choose it if you want a direct BCAA supplement with a clear serving size and no unnecessary extras. The 2:1:1 ratio and easy mixability make it a practical option for supporting your training routine. If you value simplicity, flexibility, and a formula you can slot into your stack fast, this is an easy pick.
- 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:
-
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.
-
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.
-
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.
-
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.
Filter list of variants by: |
|
|---|---|
| Flavour: | Peach Mango Grape |

