About Rule One | Rule1 – Mass Gainer, Chocolate Peanut Butter – 2620g
Rule One R1 Mass Gainer in Chocolate Peanut Butter is a high-calorie powder designed to support your daily energy and protein intake when used alongside a balanced diet and regular training programme. Each generous serving delivers 1,260 kcal and 40 g of protein from a multi-stage whey blend — making it a practical choice for active adults looking to meet demanding calorie targets.
The carbohydrate blend combines Maltodextrin, Organic Rice Bran, and Carb10® Pea Starch to provide 255 g of carbohydrates per serving, complemented by 8 g of dietary fibre. The formula also includes 1 g of Creatine Monohydrate and 9 g of naturally occurring BCAAs, alongside meaningful amounts of Calcium and Potassium. With just 8 g of total fat per serving, R1 Mass Gainer keeps the calorie surplus driven primarily by carbohydrates and protein.
The indulgent Chocolate Peanut Butter flavour mixes smoothly in a blender or large shaker cup with water, milk, or your favourite beverage. Each 2,620 g container provides 8 full servings, making it a straightforward addition to your daily nutrition routine.
Nutrition Facts
| Nutrient | Per serving (328 g) |
|---|---|
| Energy | 5,275 kJ / 1,260 kcal |
| Total Fat | 8 g |
| Total Carbohydrates | 255 g |
| – Dietary Fiber | 8 g |
| Protein | 40 g |
| Sodium | 520 mg |
| Potassium | 1,360 mg (68% DV) |
| Calcium | 370 mg (46% DV) |
| Creatine Monohydrate | 1 g |
| BCAAs (naturally occurring) | 9 g |
* Daily Value (DV) not established for Creatine Monohydrate and BCAAs.
Ingredients
Carbohydrate Blend (Maltodextrin, Organic Rice Bran, Pea Starch [Carb10®]), Protein Blend (Whey Protein Concentrate, Whey Protein Isolate, Whey Protein Hydrolysate), Cocoa (Processed with Alkali), Natural and Artificial Flavors, Contains 2% or Less of Guar Gum, Salt, Sucralose, Acesulfame Potassium, Stevia Leaf Extract, Soy Lecithin, Sunflower Lecithin.
Usage & Dosage
Mix 2 heaping scoops (approx. 328 g) with 20–24 oz (600–720 ml) of water, milk, or your favourite beverage in a blender or large shaker cup until smooth. Use alongside regular meals — not as a replacement — to support daily calorie goals.
Warnings
For use by healthy active adults only. Keep out of reach of children. Consult your physician before using this product if you are taking any medication, are under a physician’s care for any medical condition, or are under 18 years of age. Not for use by women that are pregnant, trying to get pregnant, or nursing. Do not use as a meal replacement. Some states prohibit the sale of products intended for muscle building to individuals under age 18 — check your local laws prior to purchase.
Allergen Information
Contains: Milk and Soy.
Storage
Store in a cool, dry place.
Dietary Information
- Not suitable for vegans (contains milk and soy-derived ingredients)
- Not lactose free (contains milk)







