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L Arginine Comparison - June 2025
| 1 Best Choice  9.7Exceptional | 2 Best Value  9.6Exceptional | 3  9.4Excellent | 4  9.3Excellent | 5  9.2Excellent |
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ModelNOW Foods Supplements, L-Arginine 1,000 mg, Nitric Oxide Precursor*, Amino Acid, 120 Tablets | Model 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 | Model (New Improved Formula) Best Naturals L-Arginine 1000 mg 120 Tablets - Pharmaceutical Grade L Arginine Supplement Promotes Nitric Oxide Synthesis | Model Nature’s Bounty L-Arginine 1000mg for Supporting Blood Flow and Vascular Function – Non-GMO, Gluten Free, 50 Tablets | Model Nutricost L-Arginine 1000mg, Amino Acid Tablets (150 Tablets) |
BrandNOW Foods | Brand HAVASU NUTRITION | Brand Best Naturals | Brand Nature's Bounty | Brand Nutricost |
Reviews | Reviews | Reviews  | Reviews | Reviews |
Features | ||||
Simple to consume 7.9 | Simple to consume  9.6 | Simple to consume 9.1 | Simple to consume 7.6 | Simple to consume 7.0 |
Worth the money 9.1 | Worth the money 8.6 | Worth the money 9.6 | Worth the money 9.1 | Worth the money 7.2 |
Flavor 8.4 | Flavor 9.3 | Flavor 9.1 | Flavor 8.4 | Flavor 7.0 |
Tech Specs | ||||
product dimensions2.7 x 2.7 x 4.75 inches 3.53 ounces | product dimensions - | product dimensions 3.9 x 2 x 2 inches 7.05 ounces | product dimensions 2.3 x 2.3 x 4.5 inches 0.8 ounces | product dimensions - |
Review | Review | Review - | Review - | Review |
Available On   | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.7
1NOW Foods43% OffNOW Foods Supplements, L-Arginine 1,000 mg, Nitric Oxide Precursor*, Amino Acid, 120 Tablets
9.1 worth the money8.4 Flavor7.9 simple to consumeWhy we love it
Enhances blood flow and circulation.
Supports muscle growth and recovery.
Improves libido and sexual performance.
-
9.6
2HAVASU NUTRITION22% Off
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
9.6 simple to consume9.3 Flavor8.6 worth the moneyWhy we love it
Boosts energy and endurance.
Improves blood flow and vitality.
Non-GMO and premium quality.
-
9.4
3Best Naturals
(New Improved Formula) Best Naturals L-Arginine 1000 mg 120 Tablets - Pharmaceutical Grade L Arginine Supplement Promotes Nitric Oxide Synthesis
9.6 worth the money9.1 simple to consume9.1 FlavorWhy we love it
High purity with no artificial additives.
Supports nitric oxide synthesis effectively.
Non-GMO and gluten-free formula.
L Arginine Buyer's Guide
Written by Libby JohnsonIntroduction to L Arginine
L Arginine is a common amino acid found in many supplements and foods. It is known for its ability to produce nitric oxide, which helps to increase blood flow and circulation. L Arginine has been used for a variety of medical conditions and is often used to improve athletic performance. It can also be used to improve heart health and to increase energy levels. It is important to understand the benefits and side effects of L Arginine before purchasing a supplement.
Types of L Arginine
There are several different types of L Arginine available on the market. The most common form is L Arginine Hydrochloride (HCL). This form is most commonly found in dietary supplements, as it is more easily absorbed by the body than other forms. Other forms of L Arginine include L Arginine Aspartate, L Arginine Alpha-Ketoglutarate, and L Arginine Ethyl Ester. Each form offers different advantages and can be used for different purposes.
What to Look for When Buying L Arginine
When buying a supplement containing L Arginine, it is important to look for a product that is of high quality and contains a sufficient amount of L Arginine. The supplement should also be free of fillers, binders, and artificial ingredients. Additionally, it is important to look for a supplement that is produced in a GMP (Good Manufacturing Practices) certified facility. This ensures that the product is of the highest quality and has been produced under strict quality guidelines.
Benefits of L Arginine
The most common benefit of taking L Arginine is its ability to increase nitric oxide production. This helps to improve blood flow and circulation throughout the body, which can help to reduce fatigue, improve muscle growth, and enhance athletic performance. Additionally, L Arginine can help to improve heart health, increase energy levels, and promote healthy skin.
Side Effects of L Arginine
Although L Arginine is generally considered safe, there are some potential side effects to be aware of. These include stomach upset, diarrhea, bloating, and nausea. Additionally, taking large doses of L Arginine can lead to an increase in blood pressure. As such, it is important to speak to a healthcare professional before taking any L Arginine supplement.
Conclusion
L Arginine is a popular amino acid that offers a variety of benefits. It can help to improve athletic performance, increase energy levels, and improve heart health. When purchasing a supplement containing L Arginine, it is important to look for a high-quality product that is free of fillers, binders, and artificial ingredients. Additionally, it is important to speak to a healthcare professional before taking a supplement containing L Arginine.
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