L-Arginine Dosage for ED
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What L-arginine dosage for ED should I use?

Our article on Natural Remedies for Erectile Dysfunction gave a detailed list of many herbs and supplements that work to treat impotence (also known as erectile dysfunction or ED).

L-arginine is one of the amino acids commonly found in the foods that we eat. Our body uses it to build protein.

It is also used by the body to produce an essential substance called nitric oxide (NO). In the presence of NO, blood vessels dilate and allow for greater blood flow.

Scientists believe this is how L-arginine can help increase blood flow to the penis, allowing it to achieve an erection.

But how much of this amino acid will you need to take to get the results?

Read on to find out the research studies to show that it works and the best dosage to use.

Research Studies on Using L-arginine for ED

There are several small clinical studies completed to date, showing that taking L-arginine can reduce erectile dysfunction.

Most of them looked at the combination of L-arginine and Pycnogenol (proprietary extract from the pine bark of a tree known as Pinus pinaster).

Using only one brand ensures that the results are reproducible and consistent as other brands might not give the same results.

The specific product used in the study is PreLox.

Research Study #1

arginine dosage for ed management research paper image

This well-designed study involved 124 patients with moderate ED. The investigators used the International Index of Erectile Function (IIEF) to track the improvements in their sexual functions accurately.

After three months of treatment, the group taking PreLox showed significant improvements in their sexual function compared to the group taking the look-alike placebo (sugar pill).

Moreover, blood testosterone levels increased significantly. (Testosterone is a hormone needed to boost sex drive both in men and women.)

The benefits of taking PreLox continued to the end of the research study (which lasted six months).

Prelox contains 60 mg of Pycnogenol, 690 mg of L-arginine and 552 mg of aspartic acid. The maintenance dose is one tablet twice daily.

One study showed that using L-arginine by itself also worked, although the benefit was not as great as using the combination.

Other studies using L-arginine and Pycnogenol show similar positive benefits.

L-Arginine Dosage for ED

So what is the most appropriate L-arginine dosage for ED?

In one study, it would appear that using a low dose of L-arginine (500 mg three times daily) was no better than taking a placebo.

However, taking 500 mg three times daily was an effective dose in men with low nitric oxide levels, a substance needed for penile erection. Since L-arginine is required to make nitric oxide, this is what would be expected.

This benefit was seen in just six weeks of treatment.

Because L-arginine is not designed to treat ED immediately (like the way Viagra is), it needs to be used regularly. Over time, the erectile function will improve, allowing you to achieve an firmer erection.

Higher doses may be safely used if needed under the guidance of a health care professional.

Research studies showed that very few men reported side effects from taking L-arginine. Since it is an amino acid that your body uses, it makes sense that most people should not experience any side effects.

A starting dose of 2 grams daily is suitable and recommended. Take this low dose for 4 to 6 weeks. Increase to 5 grams daily afterwards if no improvement is seen.

Consider Prelox made by Life Extension Instead

Although taking L-arginine is effective by itself, using PreLox, a combination supplement containing Pycnogenol and L-arginine, is expected to give better results as several research studies have shown.

Buy from a well-known and reputable manufacturer such as Life Extension. They are so confident of the quality of their products that they offer a 100% money-back guarantee. You have nothing to risk.

Get More Information on PreLox

Bottom Line

What L-arginine dosage for ED should I use?

Start with 2 grams daily for four to six weeks.

See if you get any benefit. Then increase to 5 grams daily.

Higher doses may be used safely. Research studies show that this is the case.

You can expect to get better results by taking L-arginine with Pycnogenol (in a product called PreLox) since most of the studies were done with this particular formulation.

See the full review on L-Arginine to get information on side effects.

What are some other natural remedies to help with ED?

Other than using L-arginine for ED, many other effective remedies can be found listed in our article Natural Remedies for Erectile Dysfunction.

Each of the listed supplements comes with a rating indicating how much research has been done.