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Nitric Oxide for Sports & Fitness

Why Use

Nitric Oxide

Why Do Athletes Use It?*

Some athletes say that nitric oxide improves the results of weight training.

What Do the Advocates Say?*

Advocates say that AAKG increases the body’s production of nitric oxide, a natural blood-flow enhancer. A double-blind trial of AAKG suggested it might improve some measures of strength and power resulting from weight-training.

*Athletes and fitness advocates may claim benefits for this supplement based on their personal or professional experience. These are individual opinions and testimonials that may or may not be supported by controlled clinical studies or published scientific articles.

Dosage & Side Effects

Nitric Oxide

How Much Is Usually Taken by Athletes?

Typically, 4 grams of AAKG are taken three times a day.

Side Effects

In an eight-week double-blind trial, weight lifters taking 4 grams of AAKG three times a day reported no significant side effects, showed no changes in blood pressure or heart rate, and had no abnormalities on standard blood tests for general health.1 These athletes also reported no undesirable changes in general health, mental health, libido, sleep quality, or other quality of life measures.2 Some doctors believe that people with herpes (either cold sores or genital herpes) should not take arginine supplements, because of the possibility that arginine might stimulate replication of the virus.

No clear interactions between AAKG and other nutrients have been established.

Interactions with Supplements, Foods, & Other Compounds

At the time of writing, there were no well-known supplement or food interactions with this supplement.

Interactions with Medicines

As of the last update, we found no reported interactions between this supplement and medicines. It is possible that unknown interactions exist. If you take medication, always discuss the potential risks and benefits of adding a new supplement with your doctor or pharmacist.

More Resources

Nitric Oxide

Where to Find It

Although the substances that comprise AAKG are present in many foods, the AAKG compound is found only in supplements.


See a list of books, periodicals, and other resources for this and related topics.

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