10 Best Best L Arginine of 2025

Tested and Reviewed: Top 10 Best L Arginine deals with expert ratings from 8.1 to a perfect 10

June 2025 Edition

Editor's Choice

9.7

THORNE

THORNE L-Arginine Plus (Formerly Perfusia Plus) - Sustained-Release Cofactors to Support Heart Function, Nitric Oxide Production & Optimal Blood Flow* - 180 Capsules

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Editor's bottom line:

“This best l arginine is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Arginine Plus Cofactors: Antioxidants and methylating factors augment arginine benefits*
Sustained Release: Provides optimal levels of L-arginine with twice daily dosing
Circulation: Helps to relax arteries, thus promoting optimal blood flow*
For Athletes: Supports lean muscle mass and work capacity during exercise*
Free From: Every Thorne product is made with the purest possible ingredients - without gluten or other major allergens (eggs, tree nuts, peanuts) This product also contains no soy, dairy, shellfish, or fish

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Picked by 270 people today

9.5

Pure Encapsulations

Pure Encapsulations L-Arginine - 1,400 mg - Support Nitric Oxide Production - Heart Health & Blood Flow - Gluten Free & Non-GMO - 180 Capsules

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Main Highlights

Heart Health Ally: Supports cardiovascular health through nitric oxide production, important for healthy dilation of blood vessels*
L-Arginine Amino Acid Supplement: Each 2-capsule serving contains 1,400 mg of free-form L-arginine HCl
Circulation Support: Aids in maintaining vessel dilation, circulation, and normal blood flow*
Non-GMO & Gluten Free: As a dietary supplement, take 2 l-arginine capsules, 1-3 times daily, between meals
Pure Difference: What we leave out matters, too; Pure Encapsulations products are FREE FROM common allergens, artificial or unnecessary ingredients, and GMOs

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9.5

NOW Foods

Now Foods Arginine 1000mg, 120 tabs (Pack of 2)

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Main Highlights

DOUBLE VALUE PACK! You are buying TWO of Now Foods Arginine 1000mg, 120 tabs L-Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion as well as DNA synthesis.
Now Foods Arginine 1000mg, 120 tabs

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9.2

Save 27%

HAVASU NUTRITION

L-Arginine Capsules Nitric Oxide Supplement for Men with L-Citrulline - 1200mg L Arginine and L Citrulline Blend - Non-GMO Veggie Capsule for Performance, Endurance and Muscle - 1 Month Supply

27% OffFree Shipping

Main Highlights

L-Arginine L-Citrulline Complex - Each serving contains a 1200mg blend of L-Arginine and L-Citrulline, ensuring maximum performance and muscle support during physical activities.
Supports Nitric Oxide Production - Our l arginine supplement for men helps support nitric oxide production, which may promote peak performance during exercise and support overall physical vitality.
Exercise Endurance - Fuel your active lifestyle with l-arginine for men, formulated to assist with endurance and recovery, helping you stay on top of your fitness goals.
One-Month Supply - With 60 capsules in each bottle, enjoy a convenient 1-month supply, making it easy to integrate this L-Arginine and L-Citrulline supplement into your daily routine for consistent support.
Vegan & Non-GMO - Crafted with vegan and non-GMO ingredients, our L-Arginine capsules are produced to meet high standards, ensuring you get a reliable and hassle-free supplement for your active lifestyle.

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9.0

Best Naturals

Best Naturals L-Arginine L-Citruline Complex Tablets, 250 Count

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Main Highlights

3rd Party Lab Tested for Purity & Quality.
1000 mg of L-Arginine L-Citrulline Complex per Tablet - 250 Tablets per Bottle.
Non-GMO & Gluten-Free.
Proudly Made in the USA, GMP Compliant, FDA Registered Facility.
No Artificial Color, Flavor, or Sweetener, No Preservatives, No Sugar, No Milk, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.

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8.8

Nature's Bounty

Nature’s Bounty L-Arginine 1000mg for Supporting Blood Flow and Vascular Function – Non-GMO, Gluten Free, 50 Tablets

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Main Highlights

L ARGININE SUPPLEMENT TO SUPPORT BLOOD FLOW: Every serving contains 1000mg of L-Arginine to support vascular function and heart health (1)
SUPPORTS NITRIC OXIDE SYNTHESIS: Natures Bounty L-Arginine 1000mg aids healthy circulation and nitric oxide synthesis (1)
A PROTEIN BUILDING BLOCK: L-Arginine is a naturally occurring amino acid found in foods such as red meat; fish; nuts and dairy; amino acids are the building blocks of protein and play a key role in body function (1)
VEGETARIAN L-ARGININE TABLETS: Natures Bounty L-Arginine tablets are suitable for vegetarians; non-GMO; gluten free and contain no artificial colors; flavors or sweeteners
FROM THE TRUSTED WELLNESS EXPERTS: Natures Bounty L-Arginine is a product of 50 years of dedication to quality; consistency; and scientific research to make vitamins and nutritional supplements of excellence

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Best Value

8.6

Save 43%

NOW Foods

NOW Foods Supplements, L-Arginine 1,000 mg, Nitric Oxide Precursor*, Amino Acid, 120 Tablets

43% OffFree Shipping

Main Highlights

DOUBLE STRENGTH L-ARGININE: NOW offers this non-GMO, double strength L-Arginine supplement in 1,000 mg tablets.
NITRIC OXIDE PRECURSOR: Arginine plays an important role in the dilation of blood vessels.
CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher, Soy Free
GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
Packaged in the USA by a family owned and operated company since 1968.

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8.3

Save 42%

Doctor's BEST

Doctors Best Pure L-Arginine Powder, Supports Cardiovascular Health, Non-GMO, Gluten Free, Soy Free, Vegan Net Wt. 10.6 oz (300 Grams)

42% OffFree Shipping

Main Highlights

DOCTOR'S BEST L-ARGININE POWDER an amino acid vital in the synthesis of nitric oxide, which is an essential compound that helps blood circulation. *
L-ARGININE - helps improve cardiovascular health, supports a healthy immune system, and helps support brain health.*
AMINO ACID AND NITRIC OXIDE FORMULA - helps support athletic endurance and helps boost nitric oxide production. Helps promote cardio fitness, pre-workout, performance, energy and circulation.*
PRE & POST WORKOUT SUPPLEMENT - muscle benefits, by improving blood flow, L-arginine can deliver more oxygen and nutrients to working muscles during exercise, potentially enhancing performance.*
BUILDING BLOCK - L-Arginine a necessary precursor to creatine, a building block needed for the body to produce creatine, helps supply energy to all cells in the body; mainly muscle cells, making it important for exercise performance.*

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8.1

Save 23%

Force Factor

FORCE FACTOR L-Arginine Nitric Oxide Supplement with BioPerine to Help Build Muscle and Support Stronger Blood Flow, Circulation, Nutrient Delivery, and Pumps, L-Arginine 3000mg, 3g, 150 Capsules

23% OffFree Shipping

Main Highlights

STRENGTHEN BLOOD FLOW: L-Arginine is a potent amino acid that increases nitric oxide production in the body, which leads to stronger blood flow, helping to deliver essential nutrients and oxygen to your muscles for enhanced performance
OPTIMAL DAILY DOSE: Force Factor fundamentals L-Arginine contains 3000mg of premium L-Arginine hcl, helping to ensure you get a powerful dose time after time
SUPERIOR ABSORPTION: BioPerine is added to help enhance the bioavailability and performance of selenium in the formula, promoting quick absorption so key natural ingredients can get to work quickly
FUNDAMENTAL STACKING: Force Factor fundamentals have been purposefully designed to stack well with other Force Factor supplements to help tackle your individual goals
MADE IN USA: Force Factor performance nutrition supplements are produced in cGMP facilities right here in the USA and formulated with premium ingredients sourced from all over the world that are regularly tested for quality and potency

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8.1

Best Naturals

(New Improved Formula) Best Naturals L-Arginine 1000 mg 120 Tablets - Pharmaceutical Grade L Arginine supplement promotes nitric oxide synthesis

Free Shipping

Main Highlights

3rd Party Lab Tested for Purity & Quality.
1000 mg of L-Arginine per Tablet - 120 Tablets per Bottle.
Non-GMO & Gluten-Free.
Proudly Made in USA, GMP Compliant, FDA Registered Facility.
No Artificial Color, Flavor, or Sweetener, No Preservatives, No Sugar, No Milk, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.

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Our Best Overall Choice

Best Choice

9.7

THORNE

THORNE L-Arginine Plus (Formerly Perfusia Plus) - Sustained-Release Cofactors to Support Heart Function, Nitric Oxide Production & Optimal Blood Flow* - 180 Capsules

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Arginine Plus Cofactors: Antioxidants and methylating factors augment arginine benefits*
Sustained Release: Provides optimal levels of L-arginine with twice daily dosing
Circulation: Helps to relax arteries, thus promoting optimal blood flow*
For Athletes: Supports lean muscle mass and work capacity during exercise*
Free From: Every Thorne product is made with the purest possible ingredients - without gluten or other major allergens (eggs, tree nuts, peanuts) This product also contains no soy, dairy, shellfish, or fish

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Nutricost L-Arginine 1000mg, Amino Acid Tablets (150 Tablets)

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L Arginine L Citrulline Supplement 3000mg (240 Capsules) Nitric Oxide Pills for Men - Stamina, Endurance, Performance for Workouts - NO Supplements for Men - Gluten Free, Non-GMO, Vegan Capsules

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Nutricost L-Arginine L-Citrulline Complex 750mg, 240 Capsules - Non-GMO

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Horbäach L-Arginine L-Citrulline Complex | 3000mg | 250 Capsules | Non-GMO, Gluten Free Supplement

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Best Naturals L-Arginine 3000mg Per Serving - 240 Tablets - Pharmaceutical Grade - Non-GMO & Gluten Free - Made in The USA

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Dr. Emil's ARGININE Plus - L Arginine + L Citrulline - 2500 MG High Dose NO Booster Tablets - Nitric Oxide Supplement for Vascularity and Heart Health (Arginine AAKG and Citrulline Malate 2:1)

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THORNE L-Arginine Sustained Release (Formerly Perfusia-SR) - Support Heart Function, Nitric Oxide Production, and Optimal Blood Flow* - 120 Capsules - 60 Servings

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