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Arginine: Uses, Side Effects, Interactions, Dosage and Supplements



L-Arginine is an amino acid known for its ability to aid in blood flow. It is important for the production of Nitric Oxide (NO).

Uses of Arginine

L-Arginine used to be the king in ingredients when it came to pumps. This has changed over the past decade, as Arginine has been studied quite extensively, which unfavorable results for vasodilation.

If you’re looking for a pump, we highly suggest taking a look at this study. The popular L-Citrulline is more effective than L-Arginine at increasing blood Arginine levels since it is absorbed much more efficiently than Arginine! So if you’re looking at to increase Arginine levels, don’t take Arginine, take L-Citrulline.

With all that said, Arginine is used to increase Nitric Oxide levels in the blood. You’re going to find L-Arginine in products such as pre-workouts, pump products, sleep aids, and male enhancement products.

In pre-workouts and pump products, it may increase blood flow. In pump products, it is pretty much the same idea.

As for sleep aids, Arginine has been shown to be low in people with sleep apnea. Therefore supplementing with it may help.

​As for male enhancement, increased blood flow may help in increasing erections. Simple to understand this one.

Interactions with Arginine

Arginine is usually paired with ingredients such as L-Citrulline, Glycerol Monostearate, and Agmatine when it comes to pump products.

For pre-workouts, you’ll commonly find it with the aforementioned pump ingredients, and of course, you’ll find it with Caffeine and Beta-Alanine.

As for sleep aids, it can be found with ingredients such as GABA, Phenibut, and Melatonin.

Side Effects of Arginine

Some side effects that may occur include abdominal pain, diarrhea, bloating, gout, allergies, and low blood pressure.

Recommended Arginine Dosage

Proper dosages of L-Arginine is around 3g-6g. Anything above 10g may cause diarrhea or other gastric issues. 

Recommended Supplements Featuring Arginine

The following products contain Arginine but may not be at the  recommended dosage:

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