Rule One R1 Casein Protein

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

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Mix one heaping scoop of R1 Casein with 10-12 oz. of water, milk, or your favourite beverage in a shaker cup or glass. Shake or stir well to combine. For a smoother texture, use a blender. R1 Casein is best taken before bedtime or between meals to ensure a continuous supply of protein. Store in a cool, dry place away from direct sunlight. Keep out of reach of children. This product is not intended for individuals under 18 years of age. Consult a healthcare professional before use if you have any medical conditions or are taking any medications.

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: Casein Protein (Micellar Casein)

Casein protein, particularly micellar casein, is a dairy-based protein that gels in the stomach to deliver a slow, steady release of amino acids. It helps sustain a steady stream of amino acids for muscle tissue during fasting stretches.

This form is micellar casein, known for longer amino acid delivery and fit for night-time and between-meal use.

What Does Casein Protein Do?

Casein protein provides a slow, steady release of amino acids, supporting overnight muscle maintenance. This contributes to normal muscle protein balance and recovery, with research suggesting improved overnight protein synthesis when casein is consumed before sleep.

Dr. Res from the University of Nottingham found that casein ingestion before sleep boosts muscle protein synthesis. This product is not intended to diagnose, treat, cure or prevent any disease.

Rule One is Welzo’s chosen partner for R1 Casein Protein because its micellar casein blend is purposefully built for slow, steady amino acid delivery. This fits with Welzo’s focus on targeted, science‑backed supplements that help overnight muscle recovery and maintenance.

The brand’s approach to single-ingredient, fully disclosed protein sources mirrors our commitment to clarity and quality. We recognise Rule One for delivering a high-quality casein option that provides a steady amino acid release, which is ideal for night-time use or between meals. Our medical team reviews every brand in light of formulation integrity and user safety, ensuring we select partners that meet Welzo’s standards our medical team.

Welzo stock Rule One after thorough evaluation, highlighting how we verify ingredient quality and manufacturing practices how we verify ingredient quality. This brand stands out through its specialised focus on micellar casein and its suitability for extended amino acid delivery, providing clear value and confidence for customers seeking overnight protein support.