The Best Arginine Supplements – 2020 Reviews and Buyer’s Guide

Our list of the top rated arginine supplements online

It can be difficult to find the perfect arginine to add to your supplement stack. You want to make sure you are getting the highest quality, but you also don't want to spend a bunch of money on a product that won't work even with regular use.

10 Best Arginine Supplement Brands

NutraBio 100% Pure L-Arginine Powder
Best For:
  • Athletes who like lab tested ingredients
  • Those who want to buy from a trusted brand
  • Anyone who wants precision dosing

NutraBio 100% Pure L-Arginine Powder is a straight forward supplement with nothing to hide.

If you’re searching for an arginine powder to add to your pre-workout supplement stack or you’re experimenting with a new potion, this is going to be your choice if quality and brand dependability are a priority for you.

Just know that there are no sweeteners in this single ingredient supplement. Arginine can be bitter to the taste for some people.

Ingredients in NutraBio 100% Pure L-Arginine Powder:
  • No other ingredients were found in this formula

Our Rating
  • 1 Scoop (1.5g)
  • 1500 mg of arginine per serving
  • Hypoallergenic
Country Life L-Arginine Caps
Best For:
  • Those on a budget
  • Prefer capsules come in a glass container
  • Those who are looking for vegetarian based capsules

Country Life is one of the more popular retail store brand supplements. It’s effective, has a simple ingredient profile, and highly affordable—what more could you ask for in a arginine capsule product.

Ingredients in Country Life L-Arginine Caps:
  • Other Ingredients: Cellulose (capsule shell), magnesium stearate, cellulose, silica.

  • 1 Capsule
  • 500 mg of arginine
  • sold on amazon
Solaray L-Arginine
Best For:
  • Those who want to shop with a trusted supplement brand
  • Don't care about Gelatin Capsules, Magnesium Stearate and Silica.
  • Individuals who don't mind taking multiple capsules

Solaray L-Arginine is a capsule based arginine supplement that uses gelatin as it’s base which helps drive the overall price down. Flat out, this is one of the most affordable brands on the market, and is a great value for the money.

Ingredients in Solaray L-Arginine:
  • Other Ingredients: Cellulose, Gelatin Capsule, Magnesium Stearate and Silica.

  • 500 mg per capsule
  • Produced naturally by a microbiological fermentation
  • L-Arginine (as L-Arginine HCl)
Primaforce AAKG
Best For:
  • Affordable and long standing supplement brand
  • People who like to shop on amazon
  • People that don't want any fillers

Primaforce AAKG does the job for anyone in search of arginine alpha-ketoglutarate in powdered form. We don’t hate the price point either.

Ingredients in Primaforce AAKG:
  • Arginine Alpha-Ketoglutarate

  • 2000 mg of arginine per serving
  • Powdered form
  • Ships from and sold by
Bluebonnet L-Arginine
Best For:
  • People willing to pay more for a brand premium
  • Larger doses
  • People who like clean plant based capsules

Bluebonnet L-Arginine is one of the few brands that make the 1000 mg caplet variation. Giving you a bigger dose per capsule.

If you’re open to a foam mattress, this is surely one of the most accommodating and comfortable.

Ingredients in Bluebonnet L-Arginine:
  • Other Ingredients: Vegetable cellulose, vegetable magnesium stearate, stearic acid, vegetable glaze.

  • free of Corn, yeast, gluten
  • Kosher Certified, vegan
  • 1000 mg of free-form L-Arginine
Pure Encapsulations L-Arginine
Best For:
  • Affordable and long standing supplement brand
  • Larger doses
  • People that don't want any fillers

Pure Encapsulations makes unique supplements that usually use patented ingredients to make their products. For a lot of people, Pure Encapsulations is the brand for higher quality supplements. The price tag is usually higher than more other products on the market.

Ingredients in Pure Encapsulations L-Arginine:
  • Other ingredients: vegetarian capsule (cellulose, water).

  • Vegan certified
  • Gluten-Free
  • Hypoallergenic
Source Naturals L-Arginine
Best For:
  • Affordable and long standing supplement brand
  • Larger doses
  • People that don't want any fillers

Source Naturals is a well known brand that has been around for a while now. We don’t really like that they use gelatin (capsule) but it does keep the price lower serving.

Ingredients in Source Naturals L-Arginine:
  • Other Ingredients: gelatin (capsule), dibasic calcium phosphate, colloidal silicon dioxide, and magnesium stearate.

  • Popular choice
  • Trusted Brand
  • Made in the USA
Solgar L-Arginine
Best For:
  • People who like to buy supplements at the store
  • People who don't want artificial flavors or coloring in their products
  • Vegan and vegetarian diets

Solgar L-Arginine is a fantastic product for anyone that wants a effective, yet affordable supplement brand.

Very basic and standard arginine formulation. 500mg of free formed arginine in every capsule. Made by a highly reputable brand so the quality is extremely effective.

Ingredients in Solgar L-Arginine:
  • Other ingredients: Vegetable Cellulose, Microcrystalline Cellulose, Vegetable Magnesium Stearate.

  • Small capsules
  • L-Arginine (Free Form)
  • Vegetable Cellulose
Sundown Naturals L-Arginine
Best For:
  • People who want a brand that guarantees quality - laboratory tested
  • People who want to buy from CVS or Walmart
  • People who want no artificial sweeteners

Sundown Naturals L-Arginine is an affordable capsule form of arginine that is made by a long time brand that is familiar to most people.

When we think of an ultra known brand that you can find in many grocery stores, we think of Sundown Naturals

Ingredients in Sundown Naturals L-Arginine:
  • Gelatin. Contains <2% of: Silica, vegetable magnesium stearate.

  • No dairy / lactose
  • no artificial coloring
  • 500 mg of l-arginine as (free-form) per serving
NOW Foods L-Arginine
Best For:
  • People who are already trust Now Foods for their supplements
  • The affordability when compared to top ranking brands
  • Diets allowing bovine capsules

NOW Foods L-Arginine capsules are alright when compared to the other brands we reviewed. Nothing is wrong with it if you don’t mind the bovine capsules.

Affordable and can be found in a lot of stores around the USA. The brand is well known and has been around for many years now.

Trusted brand, good price, and you can easily find it online.

Ingredients in NOW Foods L-Arginine:
  • L-Arginine (Free-Form), Other Ingredients: Gelatin (capsule), Magnesium Stearate (vegetable source) and Silica.

  • 500 mg capsules
  • Non-GMO, Kosher
  • USA by a family owned


The effects of arginine can be felt pretty quickly, sometimes within 30 minutes.

Many customers say a little bit of lemon water or fruit juice helps kill any taste. Arginine capsules are also a quick and easy option.

It's true, you can increase your arginine intake from foods too, not just supplements. Food's like Turkey, Pork loin, Chicken, Pumpkin seeds, Soybeans, Peanuts, Spirulina, Dairy, Chickpeas, and Lentils are good natural sources of arginine.

We spend a lot of time researching and reviewing Arginine supplements. The best rated brand can change from time to time due to updates in research or data. Be sure to check out our updated top 10 list for any changes.

Reviewed, ranked, and written by the professional editorial team

This research is supported by you, our readers, through our independently chosen links, which earn us a commission. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.