Best L-Arginine Supplements

L-arginine supplements can help you fill nutritional holes in your diet


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L-arginine is an amino acid, a chemical building block of protein. L-arginine is needed for the body to function properly. There are a total of 20 amino acids in the human body. Amino acids can be diviede into 3 categories:

  1. essential: meaning that our bodies cannot produce them so we must obtain them through the food we eat.
  2. non-essential: meaning your body can produce them by itself.
  3. semi-essential: meaning your body either does not produce very high amounts or, in certain circumstances, may require more than it’s able to make.

L-arginine falls into the third category – classed as semi-essential. Your body can naturally manufacture appropriate amounts L-arginine under normal circumstances but in certain situations might require supplementation.

Red meat, fish and dairy products are all top foods when it comes to l-arginine content. But of course, not everybody likes the type of food we should be eating as part of a healthy and balanced diet. L-arginine supplements can help you fill nutritional holes in your diet, especially if you’re looking to reap the rewards associated with this particular amino acid.

With so many L-arginine supplements on the market, doing the research is heavily time consuming. So we did the research for you and compiled the list of the best available products on the market.


L-Arginine Supplement PURE
L-Arginine PURE

Available on Amazon

L-Arginine PURE delivers a high dose of L-arginine, and it does so with a highly pure formulation with multiple forms of L-arginine.

Most of its 700 mg of L-arginine per capsule is delivered as arginine alpha-ketoglutarate, but it also includes small amounts of free L-arginine, L-arginine L-pyroglutamate, and L-arginine HCL.

Since these are absorbed through slightly different pathways in your body, this might boost absorption and lead to arginine levels that increase rapidly and stay elevated for a long time. This makes it great for boosting your sex drive and for athletic performance.

2Roam Nitric Oxide SECOND BEST

L-arginine supplelemt Roam Nitric Oxide
Roam Nitric Oxide

Available on Amazon

When it comes to raising your nitric oxide production through L-arginine, Roam Nitric Oxide is the best solution.

It provides two sources of L-arginine, both the HCL form and the alpha-ketoglutarate form, as well as citrulline to aid and assist with nitric oxide production. There are no extraneous ingredients, and the only downside is that the capsule is gelatin, so not fit for strict vegetarians.

3Sheer Strength Sheer NO THIRD BEST

L-arginine supplement Sheer NO
Sheer Strength Sheer NO

Available on Amazon

Sheer NO is a supplement that focuses on boosting nitric oxide through a variety of ingredients, but L-arginine is one of the key constituents.

It’s accompanied by pine bark extract and citrulline, so as far as supplements that will boost nitric oxide production, it’s one of the better ones. However, its L-arginine content is only middle of the road due to the other ingredients.

4Havasu Nutrition L-Arginine

L-Arginine Supplement Havasu Nutrition
Havasu Nutrition L-Arginine

Available on Amazon

Havasu’s L-arginine supplement delivers 400 mg of arginine per capsule, split between L-arginine HCL and L-arginine alpha-ketoglutarate.

In addition, it provides the companion amino acid citrulline, which is also linked to nitric oxide production in the body. In addition, there is 50 mg of cayenne pepper extract per serving, which is thought to promote blood flow through a different mechanism.

If you are looking for maximal blood flow, it’s a great solution, but if you want to focus on L-arginine specifically, it’s not the most targeted supplement.

5BulkSupplements L-Arginine Base Powder

L-Arginine Base Powder BulkSupplements
BulkSupplements L-Arginine Base Powder

Available on Amazon

For the true do it yourselfer, BulkSupplements L-arginine is the way to go. Coming in a pure powdered form of L-arginine HCL (which is what the “base” in the name refers to), this is what you want if you are looking for a way to incorporate L-arginine into your shakes or smoothies.

The downside is shared with all powder-based supplements that are usually taken in low doses: you’ll need a milligram-accurate scale to measure out doses.

6Jarrow Formulas L-Arginine

L-Arginine Supplement Jarrow Formulas
Jarrow Formulas L-Arginine

Available on Amazon

Jarrow Formulas never goes for flashy supplement formulations, but they do simple formulas quite well. This is the case with their L-arginine supplement, which is a straightforward 1000 mg L-arginine HCL dosage in a vegetarian capsule.

It’s certified free of common allergens like gluten, soy, dairy, shellfish, and eggs, making it a good choice for people with food sensitivities and allergies.

7 NOW Double Strength L-Arginine

L-Arginine Supplement NOW Double Strength
NOW Double Strength L-Arginine

Available on Amazon

NOW delivers a heavy dose of L-arginine, with 1000 mg of L-arginine HCL per capsule.

Unfortunately, it’s got a few more binders and stabilizers than purists might like, and another disadvantage is the fact that the L-arginine is supplied in just one form as opposed to multiple different forms.

Still, for those looking for high L-arginine dosages, it’s a good buy.

8L-Arginine PRO Powder

L-Arginine Supplement PRO Powder
L-Arginine PRO Powder

Available on Amazon

This powder-based L-arginine supplement is something a little different–it’s almost more of a sports drink than just a supplement. It provides a very high dose (5500 mg) of L-arginine, alongside vitamins C, D, K, and several B-vitamins.

It’s flavored with stevia along with the artificial sweetener xylitol, which some people may not like. The taste and flavoring might make it a little too overpowering to add to a smoothie or a protein shake, which limits its versatility.

9Amazing Formulas L-Arginine

L-Arginine Supplement Amazing Formulas
Amazing Formulas L-Arginine

Available on Amazon

At 1000 mg per capsule, Amazing Formulas has a high-potency L-arginine supplement, but aside from that, there is not a whole lot going for this supplement.

With several additional binders, the L-arginine comes only in an L-arginine HCL form. Perhaps better than free L-arginine, but not up to the standards of some of the top ranked supplements.

10 Bestvite L-Arginine

L-Arginine Supplement Bestvite
Bestvite L-Arginine

Available on Amazon

The L-arginine supplement from Bestvite is high dosage and no frills. It comes in the “free” form, which is cheap to manufacture but may not be as readily absorbed by your body as an alpha-ketoglutarate or even an HCL form of L-arginine.

Further, the capsule is stabilized by a lot of binders and fillers, which are a bit of a turn-off. The 1000 mg dosage is the one upside to this L-arginine supplement.

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