R1 protein WPI by Rule 1 Proteins is made entirely of ultra-pure 100 percent whey isolate and fast-acting whey hydrolysate. Whey concentrates, creamers, gums, amino spiking, and other fillers that dilute what you really came for protein have all been eliminated. The outcome is a Protein Purity Percentage of up to 87 percent, which is the highest in the industry.
R1 protein WPI by Rule 1 Proteins is made entirely of ultra-pure 100 percent whey isolate and fast-acting whey hydrolysate. Whey concentrates, creamers, gums, amino spiking, and other fillers that dilute what you really came for protein have all been eliminated. The outcome is a Protein Purity Percentage of up to 87 percent, which is the highest in the industry.
in 3 offers
The lowest price for Rule 1 Protein WPI R1 Protein 5lbs Fruity Cereal right now is $275.45 at Supplement Warehouse, compared across 3 retailers.
The all-time low was $66.45 on 9 Sept 2025 — today's price is 315% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 6 Sept 2026.
Rule 1 Protein WPI R1 Protein 5lbs Fruity Cereal
R1 protein WPI by Rule 1 Proteins is made entirely of ultra-pure 100 percent whey isolate and fast-acting whey hydrolysate. Whey concentrates, creamers, gums, amino spiking, and other fillers that dilute what you really came for protein have all been eliminated. The outcome is a Protein Purity Percentage of up to 87 percent, which is the highest in the industry.
R1 protein WPI by Rule 1 Proteins is made entirely of ultra-pure 100 percent whey isolate and fast-acting whey hydrolysate. Whey concentrates, creamers, gums, amino spiking, and other fillers that dilute what you really came for protein have all been eliminated. The outcome is a Protein Purity Percentage of up to 87 percent, which is the highest in the industry.
Last updated at 06/09/2026 23:11:40
R1 Protein WPI by Rule 1 Proteins 5lbs / Fruity Cereal
Free delivery
R1 Protein WPI by Rule 1 Proteins, 5lbs / Fruity Cereal
Free delivery between 10–17 Sept
R1 Protein WPI by Rule1 Proteins 5 LBS - Protein | Supps247 Fruity Cereal
Free delivery
| Average Quantity | Per Serve (28.9g) |
| Energy | 439kJ (105 Cal) |
| Protein | 25g |
| Fat - Total | 0g |
| Carbohydrate - Total | 1g |
R1 Protein WPI by Rule 1 Proteins 5lbs / Fruity Cereal
Free delivery
R1 Protein WPI by Rule 1 Proteins, 5lbs / Fruity Cereal
Free delivery between 10–17 Sept
R1 Protein WPI by Rule1 Proteins 5 LBS - Protein | Supps247 Fruity Cereal
Free delivery
| Average Quantity | Per Serve (28.9g) |
| Energy | 439kJ (105 Cal) |
| Protein | 25g |
| Fat - Total | 0g |
| Carbohydrate - Total | 1g |
