L-Arginine Powder

L-Arginine Powder

100% Pure!
Essential Amino Acid Involved In Urea Metabolism And More!
7.2  out of 10  (63 Reviews)
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Product Overview

L-Arginine Powder

  • 100% Pure - Free-Form
  • Premium Grade
Image of a NOW product bottle

Gluten Free


Vegan & Vegetarian

L-Arginine is a popular amino acid for its amazing nitrogen retention ability.* Nitrogen as you are all aware is one of the key elements in muscle protein synthesis. Some plants can absorb nitrogen, but we mammals have to make do with the stuff we make ourselves. Arginine is mostly present in protanines and histones, two proteins commonly associated with nucleic acids (like DNA and RNA).

Ratings & Reviews

L-Arginine Powder
Overall Rating
63 Ratings
Verified Buyer Rating
29 Ratings
Average Flavor Rating
1 Flavors
Top Rated Flavor
Sem sabor
By clicking the button above, you agree to entering the Bodybuilding.com Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Jul 15, 2019
Verified Buyer
  • 2 Unflavored

product works well, taste awful

Sep 07, 2017
Verified Buyer
  • 8 Unflavored

You all must really be wimps! How much are you taking for you to even be tasting it? I either add it to my preworkout or my green tea and I don't taste a thing!

Mar 10, 2017
Verified Buyer

This product works very well, great pump, I blend my own pre-work out mixture up with the BIG 4, L-Arginine being one of the ingredients. the only warning I have if you cannot drink something that tastes bad, get the capsules.

Feb 19, 2017
Verified Buyer
  • 3 Unflavored

This product gives you a great pump, previous reviews are correct about the taste being horrible but if you mix with a pre workout it helps a bit, I wouldn't drink it on its own. I just deal with the taste and get a rock solid pump with this product!!

Jan 30, 2017
Verified Buyer
  • 2 Unflavored

This product tasted rank. I have gotten use to the taste. However it gives amazing pumps and makes me feel dense (rock hard). I would recommend if you are willing to deal with taste.

Jan 28, 2017
Verified Buyer
  • 1 Unflavored

I apologize to those who warned me about how bad this tastes. I figured they were just wimping out. Tastes EXACTLY like burned hair! I do not exaggerate.

Mar 12, 2016
Verified Buyer
  • 10 Unflavored

Love this product is very good afterwhile the tase is not that great but you can get past the taste as long as his burning fat I think it's a good product

Nov 07, 2015
Verified Buyer

I had used this in the past but had an awful time with the taste.In the past I tried mixing it with all sorts of things with no luck. This time I decided to try mixing it with a little grapefruit juice. It worked.Mixed with grapefruit juice you can barely notice the taste. I've only been back on it for a week but do like what I see so far.

Aug 14, 2015
Verified Buyer
  • 2 Unflavored

Good product! But the flavour is horrible. You have to drink it with juice or just chug it with the nose plugged.

Jul 19, 2015
Verified Buyer

Ill keep posting over and over again .. The product is incredibly working .. Best veins enlargements .. Best pumps .. Enhance GH production and improve fat burning .. Simply I'm addicted ..Man up and forget about the tast or you can simply mix it ip with your PWO or even a juice.

Jun 24, 2015
Verified Buyer
  • 10 Unflavored

Quick the b****ing about the taste my fellow future bodybuilders/athletes. This is a RAW supplement that enhances N.O. in the body. It was never intended to satisfy your taste buds nor your psychological thought of what GOOD is. I love this product and will purchase another as soon as I am running low.

Jun 23, 2015

L-Arginine is one of my favorite supplements, and this is at the top of the list. Superb quality and excellent price. Ignore the ******* that complain about the taste. If you want something that tastes good go to a candy store, but if you want an excellent arginine product at one of the best prices around, get this.

May 06, 2015

Just started using it so the results won't be in yet but have to make a comment about the taste, based on an earlier review I added it to a lemon lime Gatorade powder mix, and water (8 oz) and the effects of the arginine powder flavor/taste were virtually unnoticeable. I repeat... LEMON LIME G2. please, no more ridiculous comments about the taste!

Apr 13, 2015
Verified Buyer

I buy a lot of NOW products and I think they are a great company but this L-Arginine Powder was a disappointment. I had been using AllMax brand and switch because of my high regard for NOW. Sadly, the product completely ruined the taste of anything I mixed it with. IT was so bad I actually thought maybe the canister had gone bad. I'm sure the product is perfectly good and safe, of course. It just tastes bad. I'm back with AllMaX

Nov 06, 2014

Why would you complain about the taste of a pure powder form amino acid? I make my own pre workout and this does the trick, however I don't see the need for 4.6 grams a day I stick to around 3. The best use is mixing with your BCAA powder for during and you pre workout for before, this stuff does the trick. Taste awful but thats what you should expect from a pure 100% powder

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Price: $21.24  ($0.22 / Serving)
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Essential Amino Acid Involved In Urea Metabolism And More!

What's in NOW L-Arginine Powder

1 Lb. Unflavored
Supplement Facts
Serving Size2Level Teaspoons(4.6g)
Servings Per Container98
Amount Per Serving
L-Arginine (Free-Form) 4.6 g (4,600 mg) *
* Daily Value not established
Other Ingredients:
Contains No Sugar, Salt, Starch, Yeast, Wheat, Gluten, Corn, Soy, Milk, Egg, Shellfish Or Preservatives.
NOW® L-Arginine Is Pharmaceutical Grade.

Directions For L-Arginine Powder: Take 2 level teaspoons daily as needed in juice or water, preferably on an empty stomach.

Warnings: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. This supplement should be avoided by persons with glaucoma or herpes simplex unless otherwise prescribed by a physician. Do not use if you have had a myocardial infarction or have established coronary artery disease. Keep out of reach of children.

* 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.
Learn more about L-Arginine.
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