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Performance, nutrition and everyday favorites from R1.

Shop R1 at Tiger Fitness for Electrolytes, Protein, Pre-Workout. Browse authentic products, current best sellers and in-stock options with fast shipping and Tiger Rewards.

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Rule One Protein From $50.99 #2

Rule 1 preLIFT From $32.95 #3

Rule 1 Creatine From $17.99 #4

Clean Gainer From $47.99 #5

Rule 1 Women’s Multi From $14.99 #6

Rule 1 Men’s Multi From $19.99

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R1

Clean Protein & Performance Supplements

R1 (Rule One Proteins) is committed to delivering clean, high quality protein and performance supplements without the fluff. Every product is formulated with transparent labels, no banned substances, and no unnecessary fillers just what your body needs to train hard, recover faster, and grow stronger.

From whey isolate and hydrolysate blends to pre-workouts and amino formulas, R1 helps you stay fueled and focused with premium ingredients you can trust.

Why Choose R1?

Ultra pure whey isolate and performance formulas

Zero creamers, spiking, or banned substances

Transparent labels with clinically dosed ingredients

Trusted by athletes & fitness pros worldwide

Train Clean. Perform Better!

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Why R1?

About R1

Explore the R1 collection at Tiger Fitness, including customer favorites across Electrolytes, Protein, Pre-Workout. Compare popular products, prices and availability in one place. Tiger Fitness makes it easier to shop authentic R1 products with fast U.S. shipping and rewards on eligible purchases.

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Why buy R1 from TigerFitness?

TigerFitness carries authentic R1 products with fast fulfillment, straightforward product information, and rewards on eligible purchases.

Which R1 products are most popular?

Use the Best Selling sort above to see the R1 products customers choose most often. Availability and rankings update as the catalog changes.

How do I choose the right R1 product?

Compare the intended use, ingredients, serving size, dietary preferences, customer reviews, and label directions on each product page. Consult a qualified healthcare professional when appropriate.

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