Rule One R1 Protein Naturally Flavoured is a protein powder that helps you bounce back quicker and support lean muscle with fast absorbing whey protein.

Key actives include whey protein isolate and hydrolysate, chosen for rapid absorption to fuel recovery after workouts.

Rule One prides itself on a state of the art facility in Aurora, Illinois, and a hands on approach to quality.

Benefits & Features:

• Rapid absorption speeds recovery after demanding workouts.
• Complete amino acid profile supports lean muscle during training.
• Whey protein isolate and hydrolysate deliver fast digestion and steady amino acid release, suited for protein shakes.
• Naturally flavoured with stevia and monk fruit keeps sugar low.
• Manufactured in a state of the art facility in Aurora, Illinois, with a hands on approach to quality and a commitment to clean ingredients, free from artificial flavours, sweeteners, gums, and fillers.

Rule One's R1 Protein Naturally Flavoured embodies the brand's sports nutrition focus. The formula blends whey protein isolate and hydrolysate for fast digestion and a full amino acid profile, including BCAAs to support recovery after workouts. Natural flavours, stevia and monk fruit keep taste clean, while sunflower lecithin acts as an emulsifier. Made in Aurora, Illinois, each scoop provides 25 g protein, 1 g carbohydrate, 0 g fat and less than 1 g sugar, making it ideal for protein shakes and training nutrition, and it sits well with vitamin d supplement or herbal supplements as part of a plan.

Calories, Total Fat, Saturated Fat, Trans Fat, Cholesterol, Sodium, Total Carbohydrate, Total Sugars, Includes Added Sugars, Dietary Fiber, Protein, Vitamin D, Calcium, Iron, Potassium

• GTIN: 196671006011
• Manufacturer: Rule One
• Size: Vanilla Creme - 823 grams
• Categories: Best SellersRule One Nutrition & SupplementsSubscribe & Save Products
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Mix one scoop of R1 Protein Naturally Flavored, Pure Vanilla with 8 oz. of cold water or your preferred beverage. It can be consumed anytime, but is most effective when taken immediately after workouts, between meals, or in the evening before sleep. Store in a cool, dry place, away from direct sunlight and moisture. Keep the container tightly closed and out of reach of children. Do not exceed the recommended daily dose. If you are pregnant, breastfeeding, taking any prescribed medication, or have any medical condition, consult a healthcare professional before use.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Whey Protein Isolate

Whey protein isolate is a complete dairy-derived protein that is quickly digested and absorbed to supply essential amino acids needed for everyday muscle function and recovery after exercise. This version is paired with whey protein hydrolysate for faster absorption and is sourced to support a high-quality dairy protein intake.

What Does Whey Protein Isolate Do?

Whey protein isolates help supply amino acids needed for muscle protein synthesis and support post-workout recovery in line with standard nutrition guidance. Protein intake helps normal muscle function and repair, as recognised in UK and EFSA-aligned guidance.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Rule One is Welzo selected for its proven commitment to quality manufacturing and rigorous production standards. This brand operates a state-of-the-art production facility in Aurora, Illinois, with a hands-on approach to maintaining the very highest standards of quality across the manufacturing process. This clear dedication to excellence aligns with Welzo’s emphasis on trusted, high-purity supplements and with our team’s expectation that a partner delivers consistency, traceability and safety in every batch. Our medical team our medical team reviews brand practices to ensure alignment with Welzo’s core standards, and this brand’s emphasis on purity and clean formulation underpins that alignment with the standards we enforce.

Rule One’s product, R1 Protein Naturally Flavoured, is formulated with fast-absorbing whey protein isolate and hydrolysate, designed to deliver rapid amino acids for recovery. The blend is free from whey concentrate, artificial flavours, and fillers, reflecting a commitment to simplicity and quality that differentiates Rule One from others in the market. This makes the brand a strong partner for a protein product that targets lean muscle support and post-workout recovery.

Welzo chose Rule One because their manufacturing discipline and product integrity align with our evaluation criteria and market needs, ensuring reliability for UK customers and a product you can trust with every scoop.