Best L-Arginine Supplements of 2025

Elisa Drew Avatar
Elisa Drew
Last Updated: Jan 13, 2025

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L-Arginine supplements are a popular choice for individuals looking to improve their athletic performance, cardiovascular health, and overall well-being. These supplements contain the amino acid L-Arginine, which plays a crucial role in the production of nitric oxide in the body. Nitric oxide helps to dilate blood vessels, increasing blood flow and oxygen delivery to the muscles. This can lead to improved endurance, strength, and recovery times. Additionally, L-Arginine has been shown to have positive effects on blood pressure, cholesterol levels, and immune function. Overall, L-Arginine supplements are a safe and effective way to support overall health and athletic performance.

At a Glance: Our Top Picks

NOW Supplements L-Arginine 1000mg Tablets Cover #TOP 1
NOW Supplements L-Arginine 1000mg Tablets
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Puritan's Pride L-arginine Capsules Cover #TOP 2
Puritan's Pride L-arginine Capsules
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Nature's Bounty L-Arginine Tablets Cover #TOP 3
Nature's Bounty L-Arginine Tablets
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Top 10 L-Arginine Supplements

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NOW Supplements L-Arginine 1000mg Tablets

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NOW Supplements L-Arginine 1000mg Tablets Cover
NOW Foods Supplements, L-Arginine 1,000 mg, Nitric Oxide Precursor*, Amino Acid, 120 Tablets

The NOW Supplements L-Arginine 1000mg Tablets are a non-GMO, double-strength supplement that supports vascular health and metabolism management. Arginine is an important precursor of nitric oxide, which plays a role in the dilation of blood vessels. The product is pharmaceutical-grade, and the tablets come in a bottle of 120-count. The product is also Kosher, Soy-free, and gluten-free. However, customers are advised to be available during product delivery to prevent damage due to exposure to heat or sunlight.

What We Like
High-quality product
Effective for workouts
Improves blood circulation
Helps with migraines
Enhances other medications
What We Don't Like
Large tablet size
Some choking issues
#TOP 2

Puritan's Pride L-arginine Capsules

Puritan's Pride
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Puritan's Pride L-arginine Capsules Cover
Puritan's Pride L-Arginine 1000 mg-100 Capsules

Get the most out of your workouts and boost your immune system with Puritan's Pride L-arginine 1000 Mg Capsules. Arginine serves as a source of energy and supports exercise effects, and is one of the most important amino acids in immune function. Be mindful of product delivery as exposure to heat or sunlight may lead to melting or damage. This unflavored supplement comes in a bottle of 100 count capsules, making it convenient for adult use.

What We Like
High-quality supplement
Easy to swallow
Cost-effective
Noticeable performance benefits
Trusted brand
What We Don't Like
Some find pills too large
Possible side effects for some users
#TOP 3

Nature's Bounty L-Arginine Tablets

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

Improve your heart health with Nature's Bounty L-Arginine. This supplement supports nitric oxide synthesis and circulation, which helps to promote healthy blood flow and heart function. As a protein building block, it also contributes to healthy muscles. The tablets are vegetarian and gluten-free, making them easy to incorporate into any diet. However, customers are advised to be available during delivery to avoid heat or sunlight exposure, which may damage the product.

What We Like
Supports blood flow
Enhances vascular function
High quality and purity
Easy to swallow tablets
Convenient 50-count bottle
What We Don't Like
Large pill size
Possible headaches
#TOP 4

HAVASU NUTRITION L-Arginine L-Citrulline Nitric Oxide Supplement

HAVASU NUTRITION L-Arginine L-Citrulline Nitric Oxide Supplement Cover
L-Arginine Capsules for Active Males - 60 Count, Non-GMO, 1200mg Blend of L Arginine and L Citrulline - Arginine Supplement for Enhanced Performance - L Arginine for Muscle Support

HAVASU NUTRITION L-Arginine L-Citrulline Nitric Oxide Supplement is a vegan capsule supplement that provides an ultimate blend of L-arginine, L-citrulline, and beetroot powder, which are necessary for optimal pump, growth, and endurance. The high dosage of nitric oxide precursors in this supplement helps to increase blood flow and circulation, making it the perfect pre-workout supplement for men. With an optimal blood flow supplement, you can achieve a bulk muscle look and quick recovery. This blend is stronger than other leading brands, making it the best blood circulation supplement to help you become an alpha prime male.

What We Like
Increased energy levels
Improved circulation
Positive effects on workouts
Enhanced confidence
Strong customer support
What We Don't Like
Price considered high
Low active ingredient amount
#TOP 5

Best Naturals L-Arginine Supplement

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

The Best Naturals L-Arginine Supplement is a great product to promote nitric oxide synthesis and support heart health. Each tablet contains 1000mg of L-Arginine and the bottle includes 120 tablets. The product is non-GMO, gluten-free, and has been 3rd party lab tested for purity and quality. It is proudly made in the USA, in a GMP compliant and FDA registered facility. Additionally, the product is free of artificial colors, flavors, sweeteners, and preservatives, as well as common allergens such as milk, soy, and wheat.

What We Like
Helps with muscle aches
Improves sleep quality
Great quality and value
Noticeable difference in results
Timely delivery
What We Don't Like
Uncertain effectiveness
Requires higher dosage for some
#TOP 6

Horbaach L-Arginine L-Citrulline Complex

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

Horbaach Arginine Complex is a powerful amino acid complex that combines L-Arginine and L-Citrulline. With each serving delivering 3,000 mg of this potent formula, it provides maximum support for your body. The quick-release capsules make it convenient to take, ensuring you can easily incorporate it into your daily routine. Backed by a commitment to purity and potency, this expertly crafted supplement is laboratory tested and made with trusted ingredients. It is also free of gluten, wheat, milk, lactose, soy, artificial color, flavor, preservatives, and is non-GMO. Experience the benefits of this superior quality supplement and enhance your overall well-being.

What We Like
Improved performance and strength
Good for blood flow
No aftertaste
Quality ingredients
Less soreness after workouts
What We Don't Like
Poor smell
Requires higher dosage
#TOP 7

NOW L-Arginine 500mg, 250 Capsules

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NOW L-Arginine 500mg, 250 Capsules Cover
NOW Foods Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 250 Veg Capsules

NOW L-Arginine 500mg is a non-GMO, kosher, and soy-free amino acid supplement, involved in urea metabolism, protein production, and blood vessel dilation. The product is GMP quality assured, ensuring compliance with sanitation, processing, documentation, and testing requirements for consistent and safe product quality. NOW L-Arginine is packaged by a family-owned business in the USA since 1968.

What We Like
Nitric oxide support
Improved energy levels
Convenient dosage
Enhanced recovery
Quality assurance
What We Don't Like
Need for higher dosage
#TOP 8

Force Factor L-Arginine Nitric Oxide Supplement

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Force Factor L-Arginine Nitric Oxide Supplement Cover
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

Force Factor L-Arginine Nitric Oxide Supplement is designed to strengthen blood flow, provide an optimal daily dose of 3000mg of L-Arginine, and ensure superior absorption with BioPerine. This supplement is ideal for enhancing performance, delivering essential nutrients and oxygen to muscles, and supporting nutrient delivery and pumps. Additionally, it is formulated to stack well with other Force Factor supplements and is produced in cGMP facilities in the USA with high-quality ingredients sourced from all over the world.

What We Like
Easier to swallow
Increases energy and clarity
Improves blood flow
Supports muscle growth
What We Don't Like
Strong smell and taste
Higher daily pill count
#TOP 9

Thorne Perfusia-SR L-Arginine Capsules

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

Sustained-release Thorne Perfusia-SR L-arginine capsules support heart health, nitric oxide production, wound healing, immune function and optimal blood flow. With twice-daily dosing, these capsules promote relaxation of arteries and support lean muscle mass and work capacity during exercise. Additionally, every Thorne product is made with the purest possible ingredients, without gluten or other major allergens, soy, dairy, shellfish, or fish. Thorne adheres to the FDA’s current Good Manufacturing Practices (cGMPs) and has the highest number of NSF Certified for Sport products which tests for more than 200 banned substances for elite athletic competitions.

What We Like
Effective for blood pressure control
Natural supplement backed by research
No significant side effects
Trustworthy quality product
Improves bruising recovery time
What We Don't Like
Higher price compared to alternatives
Some users experience heart palpitations
#TOP 10

Pure Encapsulations L-Arginine Supplement

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

The Pure Encapsulations L-Arginine supplement supports healthy blood flow by helping to dilate blood vessels. As an amino acid precursor of nitric oxide, it also helps with immune support, memory, and heart health. Made with premium ingredients, it is carefully manufactured and tested for purity. What sets it apart is what it doesn't contain: wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives.

What We Like
Doctor recommended
Effective for blood pressure
Quick shipping
Inflammation relief
Trusted brand
What We Don't Like
Higher price
Inconsistent quality
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Get the Best L-Arginine Supplements

L-Arginine supplements are supplements that improve certain health conditions in the body, such as migraines. L-arginine, also known as Arginine, is a form of amino acid found in the body. The supplement has many health benefits as it helps with heart failure, kidney inflammation, and even blood pressure. Researchers have shown that Arginine supplements could help combat dementia, infertility, and other medical conditions in conjunction with other supplements.

It’s safe to note that the body naturally produces L-Arginine, but many people don’t have enough of this supplement to show changes, making it necessary to take supplements. If you want to purchase your L-arginine dietary supplements, you should understand some benefits you might get from using this supplement.

Benefits of L-Arginine nutritional supplements

  • It helps bodily functions: L-arginine is an amino acid, enabling it to improve the body's process. With Arginine, the body functions better. The acid helps the body build muscles, rebuild tissues, and promotes growth. Many natural sources serve as sources of Arginine, and some of the best natural L-arginine nutritional supplement sources are meats, nuts, chicken, and fish. You can improve the quantity of Arginine you have in your body system by eating proteinous foods.
  • Reduces high blood pressure: Many research supports the claim that Arginine helps improve a person's blood pressure. Older people who are victims of high blood pressure could improve their health condition by taking arginine supplements. The supplement's ability to release nitric acid into the blood helps blood circulate better while reducing the effects of high blood pressure in humans.
  • Helps with infertility: another known L-arginine nutritional supplement benefit is the ability to help with infertility. While many factors cause infertility, L-arginine can help erectile dysfunction, a prevalent cause of infertility. If you want to buy an arginine supplement as a vegetarian, many vegetarian L-arginine supplements will help you derive some benefits. However, the best vegetarian L-arginine nutritional supplements are not derived from animals, so you must confirm before buying your supplements.
  • Waste removal: Arginine, with the aid of your kidney, removes waste from the body. If waste products are not removed from the body, they could adversely affect bodily functions. You can also build your immunity by taking supplements regularly. Your immune system will be stronger with the help of L-arginine supplements.
  • Blood circulation: another benefit is helping with blood circulation. People will enjoy better circulation when they add Arginine as a supplement. There are numerous L-arginine nutritional supplement uses you can benefit from.

Frequently Asked Questions (FAQs)

How often can I take Arginine?

You can take L-arginine daily with appropriate dosages.

Does L-arginine have any side effects?

L-arginine has side effects when it is used excessively. Therefore, you should always use prescribed dosages.

Frequently Asked Questions (FAQs)

1. What is L-arginine supplement good for?

L-arginine supplements are commonly used for circulation and protein synthesis. They help improve blood flow by increasing the production of nitric oxide, which widens blood vessels. L-arginine also stimulates the release of growth hormone, insulin, and other substances in the body, offering various benefits.

2. Is it safe to take L-arginine every day?

Yes, L-arginine is generally safe and well-tolerated when taken as a supplement, even on a daily basis for extended periods. Research has shown that it can be taken daily for a year or more without significant adverse effects.

3. Are there any side effects to taking L-arginine?

Possible side effects of L-arginine include abdominal pain, bloating, diarrhea, and gout. It may also worsen breathing in individuals with asthma and interact with certain medications that lower blood pressure. It's important to consult with a healthcare professional before taking L-arginine, especially if you have any existing medical conditions or are taking medications.

4. Does L-arginine increase testosterone?

Research suggests that consistent use of L-arginine for two to six months can lead to increased testosterone levels in men. This can result in improved mood, motivation, and sexual functions, including a stronger libido and erectile capacity.

5. What's the best time to take L-arginine?

The most recommended time to take L-arginine is before a workout, preferably around 30 minutes prior. This timing allows the supplement to have an impact during exercise and its associated benefits.

6. Does L-arginine help with weight loss?

While L-arginine offers benefits such as improving athletic performance and reducing high blood pressure, it is not considered effective for weight loss. It does not directly contribute to enhancing fat loss or promoting weight reduction.

7. How quickly does L-arginine work?

The absorption of L-arginine into the body can take a minimum of 24 hours, depending on the specific amino acid and reason for consumption. It may take up to three months of regular L-arginine treatment to experience the full effects.

8. Does L-arginine affect kidneys?

L-arginine may have both positive and negative effects on kidney function. Routine doses of L-arginine (from 3 to over 100 grams per day) are unlikely to cause adverse effects on the kidneys.

9. Does arginine help with erectile dysfunction?

Studies have shown that L-arginine may be somewhat effective in treating erectile dysfunction (ED). Men with mild to moderate ED, including those with type 2 diabetes, reported improvements in their erections after taking L-arginine dosages of 5000mg for four weeks.

10. Does L-arginine increase weight gain?

L-arginine is often recommended for people dealing with obesity to help with weight loss and muscle-mass formation. It stimulates fat metabolism by converting the body's fat reserves into energy, making it beneficial for weight management.

Editor's Notes

During our l-arginine supplement research, we found 24 l-arginine supplement products and shortlisted 10 quality products. We collected and analyzed 409,163 customer reviews through our big data system to write the l-arginine supplements list. We found that most customers choose l-arginine supplements with an average price of $18.70.

The l-arginine supplements are available for purchase. We have researched hundreds of brands and picked the top brands of l-arginine supplements, including NOW Foods, Puritan's Pride, Nature's Bounty, HAVASU NUTRITION, Best Naturals. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Elisa Drew Avatar

Elisa Drew is a really professional copywriter specializing in baby products with five years of experience working as a pediatrician once. She has published a series of baby books purchased by over thirty thousand people in the United States.

L-Arginine Supplements Comparison Table

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Brand NOW Foods Puritan's Pride Nature's Bounty HAVASU NUTRITION Best Naturals Horbäach NOW Foods Force Factor THORNE Pure Encapsulations
Unit Count 120 Count 100 Count 50 Count 60 Count 120 Count 250.00 Count 250 Count 150 Count 120.00 Count 180.00 Count
Item Form Tablet Capsule Solid Capsule Tablet Capsule Capsule Capsule Capsule Capsule
Flavor Unflavored Unflavored Unflavored Unflavored Unflavored - Unflavored Unflavored Unflavored Unflavored
Product Benefits Vascular Health Support, Metabolism Management Energy, Immune Support Heart Health Support Energy Management Blood Pressure Management - Muscle Growth Boost Nitric Oxide Amino Acids Heart & Vessels Men's Health Heart Health Support
Item Weight 0.1 Kilograms 0.01 Pounds 1000 Milligrams - 0.44 Pounds - 0.22 Kilograms 0.18 Pounds 5 Ounces 6.4 ounces
Item dimensions L x W x H 2.7 x 2.7 x 4.75 inches 2.31 x 2.31 x 4.35 inches 2.3 x 2.3 x 4.5 inches - - 3.05 x 3.05 x 5.95 inches 2.81 x 2.81 x 5.13 inches 2.25 x 2.25 x 4.38 inches 2.58 x 2.58 x 4.94 inches 5.1 x 2.4 x 2.4 inches
Primary Supplement Type protein protein Tablet L-Arginine L-Arginine - protein Selenium - -
Diet Type Gluten Free Gluten Free Plant Based Vegetarian, Gluten Free, Vegan, Plant Based Gluten Free - Halal, Kosher, Vegan Vegetarian - -
Age Range (Description) - Adult - Adult Adult Adult Adult - Adult Adult
Special Ingredients L-Arginine, Amino Acid - If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur. Keep out of reach of children. Store at room temperature. Do not use if seal under cap is broken or missing. L-Arginine, Amino Acid, L-Citrulline L-Arginine - - L-Arginine - -
FTB Score
ftb score rating icon 9.9
ftb score rating icon 9.8
ftb score rating icon 9.6
ftb score rating icon 9.5
ftb score rating icon 9.3
ftb score rating icon 9.1
ftb score rating icon 9.1
ftb score rating icon 8.9
ftb score rating icon 8.7
ftb score rating icon 8.7
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