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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Jul 27, 2026 
Product News
R1 Clear Whey Isolate has new variations: Category: Clear Whey Protein Isolate -
Jul 21, 2026 
Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Jul 13, 2026 Product News
R1 Clear Whey Isolate has new variations: Category: Clear Whey Protein Isolate -
Jul 05, 2026 Product News
R1 Clear Whey Isolate has new variations: Category: Clear Whey Protein Isolate -
Jun 03, 2026 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
May 23, 2026 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Mar 11, 2026 
Product News
R1 Whey Blend has new variations: Category: Whey Protein -
Dec 31, 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 Source7 Protein has new variations: Category: Whey Protein -
Nov 02, 2025 Product News
R1 Source7 Protein has new variations: Category: Whey Protein -
Oct 25, 2025 Product News
R1 Source7 Protein has new variations: Category: Whey Protein -
Oct 13, 2025 Product News
R1 Source7 Protein has new variations: Category: Whey Protein -
Oct 11, 2025 Product News
R1 Source7 Protein has new variations: Category: Whey Protein -
Sep 24, 2025 Product News
R1 Whey Blend has new variations: Category: Whey Protein -
Aug 01, 2025 
Product News
R1 Whey Protein has new variations: Category: Whey Protein -
Jul 28, 2025 Product News
R1 Whey Protein has new variations:- 1 Lb. - Chocolate Fudge
- 2 Lbs. - Birthday Cake
- 2 Lbs. - Strawberry Banana
- 5 Lbs. - Banana Crème
- 5 Lbs. - Chocolate Peanut Butter
- 5 Lbs. - Cookies & Crème
- 5 Lbs. - Fruity Cereal
- 5 Lbs. - Mint Chocolate Chip
- 5 Lbs. - Vanilla Ice Cream
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Jul 27, 2025 
Product News
R1 Plant Protein has new variations: Category: Greens Powder -
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 23, 2025 Product News
R1 Source7 Protein has new variations: Category: Whey Protein -
Jun 15, 2025 
Product News
Lytes was created.
Category: Hydration Powder -
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 -
Feb 04, 2025 Product News
R1 Plant Protein has new variations: Category: Greens Powder -
Jun 06, 2024 
Product News
BCAA has new variations: Category: BCAA Powder -
Jun 05, 2024 
Product News
preLIFT has new variations: Category: Pre Workout Supplements -
Jun 02, 2024 
Product News
R1 Glutamine has new variations: Category: Glutamine Powder -
May 25, 2024 Product News
preLIFT has new variations: Category: Pre Workout Supplements -
Apr 28, 2024 
Product News
Collagen Peptides has new variations: Categories: Collagen, Joint Supplements -
Apr 25, 2024 Product News
Collagen Peptides has new variations: Categories: Collagen, Joint Supplements -
Apr 22, 2024 
Product News
Charged Creatine has new variations: Categories: Creatine, Energy & Endurance -
Apr 22, 2024 Product News
Collagen Peptides has new variations: Categories: Collagen, Joint Supplements -
Apr 16, 2024 
Product News
Multi-Source Collagen has new variations: Categories: Collagen, Joint Supplements -
Apr 11, 2024 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Apr 05, 2024 Product News
BCAA has new variations: Category: BCAA Powder -
Apr 04, 2024 Product News
BCAA has new variations: Category: BCAA Powder -
Apr 04, 2024 
Product News
Pump - Non-Stim Nitric Oxide Support has new variations: Category: Stimulant-Free Pre Workout Supplements -
Apr 04, 2024 
Product News
Fruits & Green was created.
Category: Greens Powder -
Mar 29, 2024 
Product News
R1 LBS has new variations: Category: Weight Gainers -
Mar 27, 2024 Product News
Multi-Source Collagen was created.
Categories: Collagen, Joint Supplements -
Mar 24, 2024 
Product News
R1 Essential Amino 9 has new variations: Category: Essential Amino Acids -
Mar 12, 2024 
Product News
Active BCAA has new variations: Category: BCAA Powder -
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 08, 2024 Product News
Creatine has new variations: Category: Creatine Monohydrate -
Mar 08, 2024 Product News
preLIFT has new variations: Category: Pre Workout Supplements -
Mar 07, 2024 Product News
Pump - Non-Stim Nitric Oxide Support was created.
Category: Stimulant-Free Pre Workout Supplements -
Mar 07, 2024 Product News
Creatine has new variations: Category: Creatine Monohydrate -
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 -
Feb 17, 2024 
Product News
R1 Clean Gainer has new variations: Category: Weight Gainers -
Oct 19, 2023 Product News
R1 Clean Gainer has new variations: Category: Weight Gainers -
Sep 07, 2023 Product News
R1 Source7 Protein was created.
Category: Whey Protein -
Aug 24, 2023 Product News
R1 Whey Blend has new variations: Category: Whey Protein -
Aug 02, 2023 
Product News
Men's Train Daily Multivitamin has new variations: Category: Men's Multivitamins -
Jun 13, 2023 
Product News
ROAR has new variations:- 30 Servings - Fruit Punch
- 30 Servings - Lemon Lime
- 30 Servings - Peach Mango
- 30 Servings - Wild Grape
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Jun 12, 2023 Product News
ROAR has new variations: Category: Pre Workout Supplements -
Jun 09, 2023 Product News
ROAR was created.
Category: Pre Workout Supplements -
Apr 22, 2023 Product News
Men's Train Daily Multivitamin has new variations: Category: Men's Multivitamins -
Mar 22, 2023 
Product News
R1 Fruits & Greens +Antioxidants has new variations: Categories: Greens Powder, Probiotics -
Nov 17, 2022 Product News
R1 Clean Gainer was created.
Category: Weight Gainers -
Oct 07, 2022 
Product News
Fish Oil Omega-3s has new variations: Category: Omega-3 -
Sep 16, 2022 
Product News
R1 Mass Gainer has new variations: Category: Weight Gainers -
Sep 14, 2022 Product News
R1 Mass Gainer was created.
Category: Weight Gainers -
Sep 03, 2022 Product News
R1 LBS has new variations: Category: Weight Gainers -
Apr 15, 2022 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Apr 14, 2022 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
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 -
Aug 31, 2021 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Aug 31, 2021 Product News
R1 Whey Blend has new variations: Category: Whey Protein -
Aug 31, 2021 Product News
R1 Essential Amino 9 has new variations: Category: Essential Amino Acids -
Jul 23, 2021 
Product News
Women's Train Daily was created.
Category: Women's Multivitamins -
Jul 08, 2021 Product News
R1 Whey Blend has new variations: Category: Whey Protein -
May 08, 2021 Product News
Men's Train Daily Multivitamin was created.
Category: Men's Multivitamins -
Mar 20, 2021 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Feb 10, 2021 Product News
Collagen Peptides has new variations: Categories: Collagen, Joint Supplements -
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 20, 2021 Product News
R1 Plant Protein has new variations: Category: Greens Powder -
Jan 20, 2021 
Product News
R1 Casein Protein has new variations: Category: Casein Protein -
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 19, 2020 Product News
R1 Whey Blend has new variations: Category: Whey Protein -
Jun 17, 2020 
Product News
R1 BCAAs has new variations: Category: BCAA Powder -
Jun 16, 2020 Product News
R1 Whey Blend has new variations: Category: Whey Protein -
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 10, 2020 
Product News
R1 Creatine has new variations: Category: Creatine -
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 -
Feb 23, 2019 
Product News
R1 Train was created.
Category: Intra Workout -
Feb 14, 2019 Product News
R1 Whey Blend has new variations: Category: Whey Protein -
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 20, 2018 Product News
R1 Protein Whey Isolate has new variations:- 5 Lbs. - Chocolate Peanut Butter
- 5 Lbs. - Frozen Banana
- 5 Lbs. - Salted Caramel
- 5 Lbs. - Vanilla Butter Cake
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Oct 19, 2018 Product News
R1 Whey Blend was created.
Category: Whey Protein -
Mar 12, 2016 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Jan 31, 2016 Product News
R1 Protein Whey Isolate has new variations: Category: Whey Protein -
Jan 30, 2016 Product News
R1 Protein Whey Isolate has new variations: 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:
- Aug 04, 2026R1 Essential Amino 9 30 Servings (only Cherry Limeade) dropped by 45.2% to $24.99 at Muscle and Strength
- Aug 04, 2026R1 Essential Amino 9 30 Servings (only Peach Mango) dropped by 16.7% to $24.99 at Muscle and Strength
- Aug 04, 2026Collagen Peptides 25 Servings dropped by 21.1% to $14.99 at Muscle and Strength
- Aug 04, 2026Collagen Peptides 50 Servings dropped by 36.7% to $18.99 at Muscle and Strength
- Aug 04, 2026Energized Amino 30 Servings (only Grape) dropped by 33.1% to $19.99 at Muscle and Strength
- Aug 04, 2026Charged Creatine 30 Servings (only Blue Razz Lemonade, Mandarin Mango, Sour Candy) dropped by 37.5% to $19.99 at Muscle and Strength
- Aug 04, 2026preLIFT 30 Servings (only Black Cherry Limeade) dropped by 23.1% to $39.99 at Muscle and Strength
- Aug 04, 2026preLIFT 30 Servings (only Acai Berry) dropped by 47.4% to $39.99 at Muscle and Strength
- Aug 04, 2026R1 Protein Whey Isolate 1.68 Lbs. (only Pure Vanilla - Naturally Flavored) dropped by 12.5% to $41.99 at Amazon
- Aug 03, 2026R1 Casein Protein 4 Lbs. (only Chocolate Fudge) dropped by 12.3% to $99.99 at Muscle and Strength
- Aug 03, 2026ROAR 30 Servings (only Blue Razz, Fruit Punch, Lemon Lime, Wild Grape) dropped by 23% to $19.99 at Muscle and Strength
- Aug 02, 2026ROAR 30 Servings (only Peach Mango) dropped by 24.7% to $9.78 at iHerb.com
- Aug 02, 2026preLIFT 30 Servings (only Wild Grape) dropped by 19.7% to $24.93 at iHerb.com
- Jul 31, 2026R1 Protein Whey Isolate 5 Lbs. (only Pistachio Ice Cream) dropped by 11.1% to $111.99 at Muscle and Strength
- Jul 31, 2026Fish Oil Omega-3s 100 Softgels dropped by 27.7% to $12.99 at Muscle and Strength
- Jul 31, 2026R1 Essential Amino 9 30 Servings (only Blue Razz Lemonade) dropped by 15.1% to $24.99 at Muscle and Strength
- Jul 31, 2026R1 Essential Amino 9 30 Servings (only Fruit Punch) dropped by 16.7% to $24.99 at Muscle and Strength
- Jul 31, 2026R1 Essential Amino 9 30 Servings (only Grape, Sour Watermelon) dropped by 21.9% to $24.99 at Muscle and Strength
- Jul 27, 2026Energized Amino 30 Servings (only Blue Raspberry) dropped by 22.3% to $19.99 at Muscle and Strength
- Jul 27, 2026Energized Amino 30 Servings (only Fruit Punch, Orange Clementine) dropped by 33.1% to $19.99 at Muscle and Strength
- Jul 27, 2026Energized Amino 30 Servings (only Peach Mango, Pineapple Passionfruit, Watermelon) dropped by 33.3% to $19.99 at Muscle and Strength
- Jul 24, 2026R1 Plant Protein 1.37 Lbs. (only Pure Vanilla) dropped by 16.7% to $24.99 at Muscle and Strength
- Jul 23, 2026Energized Cognition 30 Servings (only Golden Gummy) dropped by 50% to $19.00 at Suppz.com
- Jul 06, 2026R1 Glutamine 75 Servings dropped by 51.9% to $24.99 at Muscle and Strength
- Jun 23, 2026R1 Glutamine 130 Servings dropped by 6.6% to $25.99 at DPS Nutrition
- May 12, 2026Multi-Source Collagen 25 Servings dropped by 9.2% to $29.99 at Muscle and Strength
- Mar 25, 2026Creatine 676 Grams dropped by 8.1% to $29.99 at DPS Nutrition
- Apr 28, 2023R1 Creatine 750 Grams dropped by 13.2% to $50.31 at Ruesco Supplement Outlet
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