Rule One Proteins is brought to you by the Costello family, the founders and former owners of Optimum Nutrition, who sold the company in 2008. Manufactured in Aurora, IL at our state of the art facility, Nutrivo, we are able to provide the highest quality products with transparent formulas at some of the most aggressive pricing in the industry.
Rule 1 News on PricePlow
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Jan 02, 2026 
Product News
R1 Whey Protein has new variations: Category: Whey Protein -
Dec 31, 2025 
Product News
R1 Protein Whey Isolate has new variations:- 1.68 Lbs. - Unflavored
- 2 Lbs. - Banana Creme
- 5 Lbs. - Banana Creme
- 5 Lbs. - Dark Chocolate - Naturally Flavored
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Nov 25, 2025 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Nov 23, 2025 
Product News
Energized Amino has new variations: Category: Amino Acids -
Nov 22, 2025 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Nov 10, 2025 
Product News
R1 Source 7 Protein has new variations: Category: Whey Protein -
Nov 02, 2025 Product News
R1 Source 7 Protein has new variations: Category: Whey Protein -
Oct 25, 2025 Product News
R1 Source 7 Protein has new variations: Category: Whey Protein -
Oct 13, 2025 Product News
R1 Source 7 Protein has new variations: Category: Whey Protein -
Oct 11, 2025 Product News
R1 Source 7 Protein has new variations: Category: Whey Protein -
Sep 24, 2025 
Product News
R1 Whey Blend has new variations: Category: Whey Protein -
Aug 04, 2025 Product News
R1 Whey Protein has new variations: Category: Whey Protein -
Aug 01, 2025 Product News
R1 Whey Protein has new variations:- 2 Lbs. - Café Mocha
- 2 Lbs. - Chocolate Fudge
- 2 Lbs. - Chocolate Peanut Butter
- 2 Lbs. - Mint Chocolate Chip
- 2 Lbs. - Strawberries & Crème
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Jul 27, 2025 
Product News
R1 Plant Protein has new variations: Category: Greens Powder -
Jul 21, 2025 Product News
R1 Whey Protein has new variations: Category: Whey Protein -
Jul 21, 2025 Product News
R1 Plant Protein has new variations: Category: Greens Powder -
Jul 14, 2025 Product News
R1 Whey Protein has new variations: Category: Whey Protein -
Jul 07, 2025 Product News
R1 Whey Protein was created.
Category: Whey Protein -
Jun 24, 2025 
Product News
R1 Lean was created.
Category: Stimulant-Free Fat Burners -
Jun 15, 2025 
Product News
Lytes was created.
Category: Electrolytes -
Jun 14, 2025 
Product News
R1 Clear Whey Isolate was created.
Category: Clear Whey Protein Isolate -
Jun 14, 2025 
Product News
Men's Multi was created.
Category: Men's Multivitamins -
Jun 13, 2025 
Product News
Women's Multi was created.
Category: Women's Multivitamins -
May 02, 2025 
Product News
R1 Burn was created.
Category: Fat Burners -
Feb 26, 2025 
Product News
Creatine has new variations: Category: Creatine Monohydrate -
Apr 04, 2024 
Product News
Fruits & Green was created.
Category: Greens Powder -
Mar 27, 2024 
Product News
Multi-Source Collagen was created.
Categories: Collagen, Joint Supplements -
Mar 26, 2024 
Product News
Pre-Amino Energy was created.
Categories: Amino Acids, Energy & Endurance -
Mar 09, 2024 Product News
Energized Amino was created.
Category: Amino Acids -
Mar 09, 2024 
Product News
Energized Cognition was created.
Category: Nootropics -
Mar 09, 2024 
Product News
Citrulline was created.
Category: Citrulline -
Mar 07, 2024 
Product News
Pump - Non-Stim Nitric Oxide Support was created.
Category: Stimulant-Free Pre Workout Supplements -
Mar 07, 2024 
Product News
BCAA was created.
Category: BCAA Powder -
Feb 29, 2024 Product News
Creatine was created.
Category: Creatine Monohydrate -
Feb 29, 2024 
Product News
Active BCAA was created.
Category: BCAA Powder -
Sep 07, 2023 Product News
R1 Source 7 Protein was created.
Category: Whey Protein -
Jun 09, 2023 
Product News
ROAR was created.
Category: Pre Workout Supplements -
Nov 17, 2022 
Product News
R1 Clean Gainer was created.
Category: Weight Gainers -
Sep 14, 2022 
Product News
R1 Mass Gainer was created.
Category: Weight Gainers -
Jan 16, 2022 
Product News
Fish Oil Omega-3s was created.
Category: Omega-3 -
Dec 22, 2021 
Product News
R1 Fruits & Greens +Antioxidants was created.
Categories: Greens Powder, Probiotics -
Nov 21, 2021 
Product News
preLIFT was created.
Category: Pre Workout Supplements -
Nov 13, 2021 
Product News
Lytes Plus was created.
Category: Electrolytes -
May 08, 2021 
Product News
Men's Train Daily Multivitamin was created.
Category: Men's Multivitamins -
Mar 17, 2021 
Product News
BaR1 was created.
Categories: High Protein Snacks, Protein Bars -
Jan 20, 2021 
Product News
R1 Pump Stim-Free was created.
Category: Stimulant-Free Pre Workout Supplements -
Jan 20, 2021 
Product News
Collagen Peptides was created.
Categories: Collagen, Joint Supplements -
Jan 19, 2021 
Product News
R1 Protein Naturally Flavored was created.
Category: Whey Protein -
Jan 04, 2021 
YouTube Video
Rule1 PLAYER1 | Boost Your Gaming Performance With nooLVL! -
Oct 24, 2020 
Product News
R1 WheyCakes was created.
Categories: Healthy Pancakes, Protein Pancakes -
Jun 16, 2020 Product News
R1 Plant Protein was created.
Category: Greens Powder -
Jun 16, 2020 
Product News
R1 BCAAs was created.
Category: BCAA Powder -
May 05, 2020 
Product News
R1 Energized Fruits & Greens was created.
Category: Greens Powder -
Apr 09, 2020 
Product News
Charged Creatine was created.
Categories: Creatine, Energy & Endurance -
Dec 12, 2019 
Product News
R1 Creatine was created.
Category: Creatine -
Dec 12, 2019 
Product News
R1 Glutamine was created.
Category: Glutamine Powder -
Dec 12, 2019 
Product News
R1 Essential Amino 9 was created.
Category: Essential Amino Acids -
Dec 12, 2019 
Product News
R1 Lean 5 was created.
Category: Stimulant-Free Fat Burners -
Feb 23, 2019 
Product News
R1 Train was created.
Category: Intra Workout -
Feb 12, 2019 
Product News
R1 Men's Train Daily was created.
Category: Multivitamins -
Jan 18, 2019 
Product News
R1 Gain was created.
Category: Weight Gainers -
Jan 18, 2019 
Product News
R1 Casein Protein was created.
Category: Casein Protein -
Jan 18, 2019 
Product News
R1 Train BCAAs was created.
Category: BCAA Powder -
Jan 18, 2019 
Product News
R1 LBS was created.
Category: Weight Gainers -
Jan 18, 2019 
Product News
R1 Pre Amino was created.
Category: Energy Aminos -
Jan 18, 2019 
Product News
R1 Pre Train 2.0 was created.
Category: Pre Workout Supplements -
Oct 19, 2018 Product News
R1 Whey Blend was created.
Category: Whey Protein -
Dec 22, 2014 Product News
R1 Protein Whey Isolate was created.
Category: Whey Protein
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Rule 1 Price Alerts
The following price alerts are still active:
- Feb 16, 2026R1 Casein Protein 4.1 Lbs. (only Vanilla Creme) dropped by 9.6% to $46.99 at Muscle and Strength
- Feb 16, 2026BCAA 60 Servings (only Grape) dropped by 15.6% to $26.99 at Muscle and Strength
- Feb 13, 2026Active BCAA 30 Servings (only Grape) dropped by 33.3% to $9.99 at Muscle and Strength
- Feb 13, 2026Active BCAA 30 Servings (only Watermelon) dropped by 33.8% to $9.99 at Muscle and Strength
- Feb 13, 2026Active BCAA 30 Servings (only Orange, Peach Mango) dropped by 51.1% to $9.99 at Muscle and Strength
- Feb 13, 2026Active BCAA 30 Servings (only Golden Gummy) dropped by 62.4% to $9.99 at Muscle and Strength
- Feb 13, 2026Lytes 40 Servings dropped by 13% to $19.99 at Muscle and Strength
- Feb 13, 2026Collagen Peptides 20 Servings (only Vanilla Creme) dropped by 22.9% to $29.99 at Muscle and Strength
- Feb 13, 2026Collagen Peptides 25 Servings dropped by 33.3% to $19.99 at Muscle and Strength
- Feb 13, 2026R1 Protein Whey Isolate 2 Lbs. (only Salted Caramel) dropped by 9.5% to $42.99 at Amazon
- Feb 12, 2026Active BCAA 30 Servings (only Blue Raspberry) dropped by 33.3% to $9.99 at Muscle and Strength
- Feb 12, 2026Pump - Non-Stim Nitric Oxide Support 30 Servings (only Grape) dropped by 17.3% to $13.99 at Muscle and Strength
- Feb 12, 2026R1 Essential Amino 9 30 Servings (only Peach Mango) dropped by 32.7% to $24.99 at Muscle and Strength
- Feb 11, 2026R1 Casein Protein 4.1 Lbs. (only Chocolate Fudge) dropped by 9.6% to $46.99 at Muscle and Strength
- Feb 11, 2026R1 Essential Amino 9 30 Servings (only Cherry Limeade, Sour Watermelon) dropped by 36.3% to $24.99 at Muscle and Strength
- Feb 10, 2026R1 Mass Gainer 11.4 Lbs. (only Cookies & Creme) dropped by 32.9% to $39.99 at Muscle and Strength
- Feb 10, 2026R1 Mass Gainer 11.4 Lbs. (only Strawberries & Creme) dropped by 33.3% to $39.99 at Muscle and Strength
- Feb 02, 2026BCAA 60 Servings (only Blue Raspberry, Orange, Peach Mango, Pineapple, Unflavored, Watermelon) dropped by 10% to $26.99 at Muscle and Strength
- Jan 23, 2026R1 Protein Whey Isolate 5 Lbs. (only Chocolate Peanut Butter) dropped by 11.1% to $79.99 at Muscle and Strength
- Jan 22, 2026R1 Clean Gainer 4.8 Lbs. (only Chocolate Peanut Butter, Cookies & Creme) dropped by 14.3% to $29.99 at Muscle and Strength
- Jan 21, 2026R1 Clean Gainer 4.8 Lbs. (only Chocolate Fudge) dropped by 14.3% to $29.99 at Muscle and Strength
- Jan 21, 2026R1 Whey Blend 5 Lbs. (only Cafe Mocha) dropped by 19% to $49.99 at Muscle and Strength
- Jan 21, 2026R1 Mass Gainer 5.5 Lbs. (only Vanilla Creme) dropped by 25% to $26.99 at Muscle and Strength
- Jan 20, 2026R1 Whey Blend 5 Lbs. (only Frozen Banana) dropped by 19% to $49.99 at Muscle and Strength
- Jan 12, 2026Multi-Source Collagen 25 Servings dropped by 34.8% to $29.99 at Muscle and Strength
- Jan 08, 2026R1 Clear Whey Isolate 1.5 Lbs. (only Cherry Limeade, Peach Mango) dropped by 15.5% to $38.00 at Suppz.com
- Jan 04, 2026R1 BCAAs 60 Servings (only Blue Raspberry, Orange Burst) dropped by 7.5% to $15.99 at DPS Nutrition
- Dec 19, 2025R1 Protein Whey Isolate 2 Lbs. (only Cafe Mocha) dropped by 19.1% to $39.99 at Muscle and Strength
- Dec 15, 2025preLIFT 30 Servings (only Orange Pineapple) dropped by 17.3% to $38.00 at Suppz.com
- Dec 10, 2025R1 Protein Whey Isolate 2 Lbs. (only Chocolate Fudge, Cookies & Creme, Strawberries & Creme, Vanilla Creme) dropped by 6.5% to $39.99 at Muscle and Strength
- Dec 10, 2025R1 Clean Gainer 9.5 Lbs. dropped by 36.2% to $45.49 at DPS Nutrition
- Dec 10, 2025R1 Whey Blend 5 Lbs. (only Cookies & Creme) dropped by 19% to $49.99 at DPS Nutrition
- Dec 10, 2025R1 Mass Gainer 11.4 Lbs. (only Chocolate Fudge) dropped by 38.8% to $38.49 at DPS Nutrition
- Nov 22, 2025preLIFT 30 Servings (only Black Cherry Limeade) dropped by 11.6% to $38.00 at Suppz.com
- Nov 22, 2025preLIFT 30 Servings (only Blue Raspberry, Snow Cone, Wild Grape) dropped by 17.3% to $38.00 at Suppz.com
- Nov 22, 2025preLIFT 30 Servings (only Acai Berry, Fruit Punch, Mandarin Mango) dropped by 36.7% to $38.00 at Suppz.com
- Nov 22, 2025R1 Creatine 750 Grams dropped by 34% to $33.25 at Suppz.com
- Nov 22, 2025R1 Creatine 375 Grams dropped by 16.6% to $23.75 at Suppz.com
- Nov 22, 2025R1 Creatine 150 Grams dropped by 18.6% to $12.35 at Suppz.com
- Nov 12, 2025R1 Source 7 Protein 5 Lbs. (only Salted Caramel) dropped by 47.8% to $33.95 at DPS Nutrition
- Nov 12, 2025R1 Clean Gainer 9.8 Lbs. (only Chocolate Fudge) dropped by 36.2% to $45.49 at DPS Nutrition
- Nov 12, 2025Creatine 60 Servings (only Fruit Punch) dropped by 11.6% to $16.79 at DPS Nutrition
- Sep 12, 2025R1 BCAAs 60 Servings (only Watermelon Splash) dropped by 36.6% to $19.00 at Suppz.com
- Jul 16, 2025R1 Glutamine 150 Servings dropped by 29.9% to $29.99 at Muscle and Strength
- Jun 28, 2025Creatine 60 Servings (only Blue Raspberry) dropped by 11.6% to $16.79 at DPS Nutrition
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