Rival Nutrition — formerly known as Rivalus — is a North American sports nutrition brand built around clean, straightforward formulas and long-standing manufacturing credentials. The brand states that its products are made in an NSF-certified, GMP-compliant facility, with each batch Informed-Choice tested for banned substances, backed by nearly 40 years of manufacturing experience. Bulldog Nutrition is an authorized Canadian and US retailer of Rival Nutrition, backed by 10+ years in the supplement industry.
Rival Nutrition products include Promasil — a multi-source protein blend combining whey concentrate, whey isolate, micellar casein, and egg albumin — and Clean Gainer, a mass gainer built on whole food carbohydrate sources such as oats, sweet potato, and pea starch rather than the maltodextrin-heavy blends common in the category.
Who Rival Nutrition is for: Lifters who want honest, well-constructed formulas from an established manufacturer, and anyone looking for a mass gainer whose carbohydrates come from recognizable whole food sources rather than cheap filler. Clean Gainer in particular suits hard gainers who struggle to eat enough calories but do not want a heavy maltodextrin load.
A note on third-party testing: Rival Nutrition states that its batches are tested under the Informed Choice program. Informed Choice and Informed Sport are separate programs with different testing protocols — Informed Sport is the batch-level program intended for athletes in drug-tested competition. Athletes subject to WADA or similar testing should verify a product's current listing and batch number in the appropriate database before use, rather than relying on any retailer's summary, including ours.
Shop the full Rival Nutrition lineup below — ships fast across Canada and the United States.
Frequently Asked Questions
Is Rival Nutrition the same as Rivalus?
Yes. Rival Nutrition is the brand formerly known as Rivalus. The product lineup carries over, including Promasil protein and Clean Gainer. If you bought Rivalus products previously, Rival Nutrition is the same brand under its current name.
Is Rival Nutrition available in Canada?
Yes. Rival Nutrition supplements are available in Canada through Bulldog Nutrition — an authorized Canadian and US retailer. All products are sourced directly from authorized distribution, never grey market, with fast shipping across Canada and the United States.
What is Rival Nutrition Clean Gainer?
Clean Gainer is a mass gainer formula that uses whole food carbohydrate sources — oats, sweet potato, and pea starch — rather than the maltodextrin-heavy formulas common in most mass gainers. That makes it a good fit for athletes who want caloric support for muscle gain from a more recognizable carbohydrate source.
What is Rival Nutrition Promasil protein?
Promasil is a multi-source protein blend combining whey protein concentrate, whey isolate, micellar casein, and egg albumin, giving both fast and slower-digesting protein sources for a more sustained amino acid release than a single-source whey.
Is Bulldog Nutrition an authorized retailer of Rival Nutrition in Canada?
Yes. Bulldog Nutrition is an authorized Canadian and US retailer of Rival Nutrition. All products are sourced directly from authorized channels — never grey market or counterfeit. Fast shipping across Canada and the United States.
