L-Arginine 400 g View larger


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Studies have found that increased L-Arginine consumption, can provide a number of benefits for the human body, as well as for the physique, and athletic performance in general. It can help increase muscle mass, enhance recovery, reduce DOMS (Delayed Onset Muscle Soreness), increase vascularity and muscle pumps and more. Read the full product description for more information.

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Average rating: 4.5/5 - Number of reviews: 23
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What is L-Arginine?

L-Arginine is a non-essential amino acid that can be produced naturally by the human body, as well as being found in a number of dietary sources, including nuts, dairy, and meat sources. Just because it is non-essential however, this does not mean that arginine supplementation is not beneficial, because truthfully, it is, for a variety of different reasons. Studies have found that increased L-Arginine consumption, can provide a number of benefits for the human body, as well as for the physique, and athletic performance in general. Athletes and bodybuilders often supplement with L-Arginine, and include it in part of their muscle-building supplement stack. The benefits of L-Arginine come from the fact that it plays a vital role in protein synthesis, as well as helping to function as a precursor for the production of Nitroc Oxide, which in itself, helps provide numerous athletic performance advantages to the human body.

How does it work?

Basically, within the body, L-Arginine is converted into Nitric Oxide, which in turn then causes the blood vessels to widen and dilate, due to the fact that Nitric Oxide functions as a potent vasodilator. As the blood vessels widen and expand, this in turn allows more oxygenated blood, rich in nutrients, to pass through the vessels and be transported around the body and delivered to the major organs that happen to require it. On top of that however, it has also been linked with an increase in insulin production and growth hormone production, making it highly beneficial for bodybuilders and individuals looking to increase their lean muscle mass. On top of that, it has been found to play a crucial role in protein synthesis, making it essential for the growth and repair of muscle tissues, especially tissues following an extensive workout.

What are the main benefits of L-Arginine?

We’ve touched upon the main benefits associated with L-Arginine, now it’s time to look at them in more detail. Some of the main benefits include:

Improved athletic performance

One of the main reasons why this amino acid has been found to play such a key role in athletic performance, is all down to the fact that it is converted into Nitric Oxide. This Nitric Oxide dilates the blood vessels and allows more oxygenated rich blood to be carried around them. More oxygen and nutrients can therefore be supplied to the awaiting muscle cells in the body, which in turn will help to provide them with more energy, so they will be able to function harder and for longer, before they begin to fatigue.

Increased muscle mass

L-Arginine also plays a key role in protein synthesis, which is when the body synthesises new muscle proteins to replace worn and damaged ones as a result of an extensive workout or bout of strenuous physical exercise. Protein synthesis plays a key role in post-workout growth and recovery, making L-Arginine a very beneficial amino acid in terms of post-workout recovery.

Increased muscle pumps and vascularity

Ok, whilst vascularity and muscle pumps don’t provide any long-term benefits, they are able to serve as very beneficial motivational tools in the gym, which could help to spur you on and keep your motivation levels through the roof. Put simply, if you look better as you lift, this will serve as a psychological boost and so you’re far more likely to work that little bit harder in the gym.

Other benefits include:

  • Increased muscle mass
  • Enhanced recovery
  • Reduced DOMS (Delayed Onset Muscle Soreness)
  • Increased vascularity and muscle pumps
  • Increased athletic ability and endurance
  • Promotes the release of essential hormones
  • Can help reduce the likelihood of hypertension, strokes, cardiovascular disease, and renal failure
  • And much more...

How and when should it be consumed?

L-Arginine provides a number of benefits for the body, both in terms of endurance, and in terms of post-workout recovery. Because of this, it is recommended that you consume L-Arginine around 3 times per day, with one serving being in the morning, one serving either before, or during your workout, and the final serving being included as part of your post-workout shake. In terms of dosages, aim for 3 – 5 grams per serving.

Health Canada Recommended Dose (powder): Adults: 1 Scoop(s) 1 - 4 time(s) per day.

Arginine VS Arginine Alpha Ketoglutarate

Though they come from the same sources, L-Arginine and L-Arginine Alpha Ketoglutarate, or AAKG for short, are two very different supplements. AAKG for example, contains a salt derived from glutaric acid which plays a key role in the Krebs cycle of the human body. L-Arginine for example, has been found to play a much wider role in a person’s health and well-being, whereas AAKG is based more upon athletic performance.

What can it be stacked with?

As L-Glutamine plays such an important role in athletic performance and indeed in post-workout recovery as well, it can be stacked with a number of other supplements considered beneficial for gaining muscle mass. Common supplements that can be stacked with L-Arginine include: whey protein, creatine monohydrateL-Glutamine, and Dextrose.

L-Arginine Ingredients

Per Scoop

Medicinal Ingredients (per scoop): L-Arginine .......................... 5 Grams
Non-Medicinal Ingredients: none.

Potential Side Effects

Always speak to your doctor before trying any new supplement and discontinue use if you experience any negative side effects. As not enough is known about the safety of L-Arginine, it is not suitable for pregnant and breastfeeding women. Some users may experience mild side effects, including:

  • Nausea
  • Dizziness
  • Diarrhea
  • Weakness

Cautions and Warnings

Consult a health care practitioner prior to use if you are pregnant or breastfeeding, if your cardiovascular condition worsens, if you have a renal/kidney disease or if you are following a low protein diet. Consult a health care practitioner prior to use if you suffer from a cardiovascular disease and are attempting an increase in physical activity or if you are taking medication for cardiovascular diseases, erectile dysfunction, and/or blood thinners.

L-Arginine Reviews

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Verified Buyer

Did not receive yet
Jaroslav J. on 10/09/2017
Did not receive yet

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Alexis D. on 08/08/2017

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1st time buyer
Stephen Y. on 15/06/2017
Charlottetown PEI
Mixes instantly. Very bitter/sour tasting.

Verified Buyer

Great Price
Sheldon G. on 05/04/2017
I was looking for the powder form as its more concentrated and could not find a better price then I did here!

Verified Buyer

Allan W. on 05/04/2017
Clumped and hard in bag when delivered. Needed to whack it a few times before opening in order to return it to a measurable granular state.

Verified Buyer

Measuring cup
Jan L. on 01/04/2017
Calgary AB
Why has the measuring cup different volume in each delivery? It's kind a weird that you are changing recommended amount every delivery time or you don't care .

Verified Buyer

John F. on 26/03/2017

Verified Buyer

Shane S. on 28/02/2017
Good product

Verified Buyer

First time
Gabriel/Qi G. on 22/02/2017
Greet endurence and vascularity do fat

Verified Buyer

Bon et bas prix
Jean-Raphael J. on 25/01/2017
En partant la L-arginine ne goute pas tres bon mais celle ci est plutot corrext et vraiment moins chère comparer aux magasins de suppléments. Très bon choix !

Verified Buyer

John F. on 22/01/2017
Great stuff

Verified Buyer

Not applicable
Jens W. on 04/01/2017
Not applicable
Not applicable

Verified Buyer

Sasha I. on 24/10/2016
Really awful taste, be sure to have some lemons or grape juice to neutralize it

Verified Buyer

L arginine
Patrick o. on 19/10/2016
Oromocto nb
Really impressed with the product definitely ordering again

Verified Buyer

too fast
Maxime T. on 17/10/2016
I received my package on Friday. You want me to comment on the product on Sunday. This product take 3 days metabolize... and i have some left over from previous order... Seriously.

Verified Buyer

It's L- Arginine
jeremie d. on 11/10/2016
Fast shipping, the arginine well it taste like arginine its like chewing a tylenol so I mix it with my creatine. Give me great pump while I train like it supposed to.

Verified Buyer

Marcelo l. on 11/08/2016

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Martine R. on 05/08/2016
Facile a dissoudre.

Verified Buyer

High quality, but don't have high expectations for flavour
Alex on 16/06/2015
High quality product but don't try to maintain any allusions that you will just drink this straight. It is unflavoured so it's bitter as hell. I usually sweeten/flavour it with a squirt of Mio or some other calorie free drink mix.

Verified Buyer

It's L-Arginine
Ferdinand on 19/04/2015
Not much to say, it does what it's meant to do!

Verified Buyer

Works good, terrible taste
Shawn on 23/02/2015
It does its job but when I add a scoop to my shakes it becomes overly bitter. I am not one to complain about taste but I see two reviews that state it has no aftertaste which is miss leading.

Verified Buyer

A great Arginine product
Amin on 21/06/2013
The quality is really good and it most importantly it does not have the bad taste and smell of arginine from brand name companies

Verified Buyer

Peter on 21/07/2012
Windsor, ON
I have used many other brands of l-arginine before, including some that came pre-mixed in pre/post workout formulas. This product is as good, if not better than any I've tried. You really can't go wrong with the price point either. I've shopped at many other stores in my 15 + years of training, and I have never been happier than I am with the service, price, and products of CanadianProtien.Com. This product is very much worth a try if you are skeptical!


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