L-Arginine Powder
Currently Unavailable
Doctor's Best

L-Arginine Powder , 300 Grams Unflavored

L-Arginine Powder To Support Muscle Recovery And Growth*
Designed For Immediate Release To Promote Healthy Cardiovascular Function*
7.9  out of 10  (10 Reviews)

Product Overview

100% Pure

Doctors best vegan logo





3rd Party


cGMP Certified

Doctor’s Best L-Arginine Powder helps support athletic endurance and helps boost nitric oxide production. L-Arginine is a necessary precursor to creatine which helps supply energy to all of the cells of the body.*

L-Arginine helps support cardiovascular health and a healthy immune system. It supports blood sugar regulation already in normal range and supports brain health.*

  • No Colors
  • No Flavors
  • No Fillers
  • No Additives

Gluten Free


GMO Free


No Additives

*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.

Ratings & Reviews

L-Arginine Powder
Overall Rating
10 Ratings
Verified Buyer Rating
4 Ratings
Average Flavor Rating
1 Flavors
Top Rated Flavor
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.
Oct 09, 2017
Verified Buyer

It doesn't taste good, but it works great!!! I recommended 100%, it doesn't matter the taste

Nov 28, 2015
Verified Buyer

For an unflavored product . it is a extremely nasty nasty tasting product. It doesn't matter what you do, just plain nasty tasting. I have no idea if this product works or not as the bitter during and taste has turned me off

Nov 08, 2015
Verified Buyer

I would strongly recommend this product to anyone! The powder is so easily dissolved you don't even notice it. I add it to my pre-workout and the pumps are pure quality, you can feel you're t shirt getting tighter and tighter as you train. Definitely makes a difference for me than just taking pre workout!

Apr 30, 2015
Verified Buyer

Amazing. I mix a scoop with some bcaas every morning. Very noticable increase in pump and blood flow. Highly recommended.

Mar 11, 2015

Great Pumps with this product. I add a bit to some of my pre-workouts that do not have l-arganine or are light on the serving amount. Noticed an increased pump and vascularity right away. Mixes well but does have a distinct taste, not terrible and can be covered with any stronger preworkout. This is the first straight l-arganine I have tried but from searching having some taste is pretty normal.

Mar 06, 2015

I decent product. Even though it's unflavored the taste can be overpowering. I tried this with several protein and it overpower chocolate, vanilla, and cookies and cream. Like others have mentioned it's has a salty taste. It makes you want to lick your lips several times after drinking the product. It mixes up fine but the taste is overpowering.

Mar 03, 2015

I was sent this as part of a promo. Again, no artificial ingredients in it, only what you need. I mixed this in a shaker separately to try it, but after that I mixed it in with the BCAA's for intraworkout. As mentioned in another review, a touch salty but not enough to bother me. Pump was great from it, like any other quality pre with arginine in it. Advantage with this is you can add more if you need it. Give it a try.

Feb 26, 2015

Product works fairly well. But the flavor ruined my shaker as I didn't wash it out with soap and water after using it, only rinsed it with water and put it in the dishwasher and ran it later. Has a bad salty taste. If this product was truly unflavored I would have given it a 10/10.

Feb 18, 2015

L-arginine Powder Mixability: 10/10 – Excellent, and added to my Preworkout no problems and no noticeable grittiness. Taste – 6/10 – salty taste, even mixed in with my preworkout Appearance – very fine, white powder Effectiveness – noticed increase pumps and endurance right away during my workout. Loved it. Overall – will continue to use, and really liked the pumps/endurance from the product. This delivers a solid 6 grams of L-Arginine per serving.

Feb 18, 2015

Recently received DB's L-Arginine Powder,BCAA Tablets,Instantized BCAA Powder,and Creatine Powder from a giveaway thread to try out and review.Obviously this is for the L-Arginine.Been taking it for a couple days now mixed into my prewod,and loving the effects.I have noticed an increase in my pumps and muscle endurance.It mixes well,no grit or foam.The only negative I have about it is the taste,it tastes like salt and makes whatever you drink it withs taste change as well,maybe it would be better flavored.This is the reason I didn't give it a 10.

What's in Doctor's Best L-Arginine Powder

Serving Size 1 Scoop (6 grams)
Servings Per Container 50 servings
Amount Per Serving % Daily Value
L-Arginine HCl 6 g
† Daily Value not established.
Other Ingredients:

Directions For L-Arginine Powder: Take 1 scoop daily with or without food, or as recommended by a nutritionally informed physician.

Warnings: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Do not use if you have 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.