Does D-Aspartic Acid Raise Testosterone?
By Sporting Physiques
Updated on January 10, 2019

If you’re asking whether D-Aspartic Acid raises testosterone levels, then you’re probably trying to find out whether it’s worth giving this ingredient a try or not.

In case you weren’t already aware, the so-called ‘testosterone booster’ supplement market has exploded in recent years as guys look for ways to maintain healthy levels of the male hormone.

Average testosterone levels in men appear to have been decreasing across the board for a number of years.

No one seem to know exactly why, but the average man is believed to have significantly lower average testosterone levels than their grandfathers at the same age.

Boosting your testosterone levels naturally can bring about a range of benefits, including more lean muscle growth, enhanced libido and increases in energy levels.

That’s where D-Aspartic Acid comes into play. It’s a popular ingredient for many of the best so-called testosterone booster supplements on the market right now.

But how effective is it really?

The purpose of this article is for us to take a careful look through the scientific studies into D-Aspartic Acid and its effect on testosterone levels in humans.

We’re going to focus on the following points:

• What is D-Aspartic Acid?
• Does D-Aspartic Acid Raise Testosterone?
• Supplements with D-Aspartic Acid
• What’s the Best Dose of D-Aspartic Acid?
• Anything Else To Consider?
• Conclusion

So let’s now get under way and start taking a look at D-Aspartic Acid in a bit more detail as we look to try and find out if it’s a testosterone boosting supplement worth taking or not.

What is D-Aspartic Acid?

D-Aspartic Acid (DAA) is one of two forms of the amino acid Aspartic Acid, the other one being L-Aspartate.

It’s a naturally occurring alternate form of one of the main 20 structural amino acids and can be found in various foods such as, Soy Protein, Casein Protein and Corn Protein.

D-Aspartic Acid is a non-essential amino acid, meaning that you don’t have to worry about getting enough of it from your diet.

The structure of D-Aspartic Acid
The structure of D-Aspartic Acid

In short, your body doesn’t need it to function normally, but supplementing with it may bring about some benefits.

Unlike many of the other amino acids, D-Aspartic Acid does not play a role in the creation of proteins in the body. Instead, it plays a role in the production and release of hormones in the body.

As we mentioned above, D-Aspartic Acid has been gaining lots of attention recently for its apparent ability to raise testosterone levels in men, so now it’s time to take a closer look at the evidence (or lack of evidence) to support these claims.

Does D-Aspartic Acid Raise Testosterone?

Now it’s time to ask the important question – Does D-Aspartic Acid Raise Testosterone?

There have been quite a few human studies into DAA and many of them show positive results when it comes to raising testosterone levels.

This means that D-Aspartic Acid can be considered as a pretty effective way to raise testosterone levels when used in the correct circumstances.

The main study which many testosterone booster supplement manufacturers refer to is one which was conducted in 2009.

In the study, a group of 23 healthy men were given a D-Aspartic Acid supplement for 12 days.

At the end of the trial period, 20 of the 23 men had higher testosterone levels, and the average increase was by a staggering 43 percent.

A separate study from 2012 examined the effects of D-Aspartic Acid supplementation on testosterone levels for a longer period.

In this one, a group of men took D-Aspartic Acid for 90 days, and they experienced a 30 to 60 percent increase in testosterone levels by the end of the study.

However, there have also been studies which showed neutral results.

One found that there was no increase in testosterone levels in young men who performed weight training and took D-Aspartic Acid for 28 days.

To summarize, there is some strong evidence to suggest that D-Aspartic Acid will indeed help to raise testosterone levels, although more research is probably needed.

As a side benefit, there have also been some initial studies which seem to suggest that D-Aspartic Acid could work to help men who are experiencing fertility problems.

To back this claim up, one study of 60 men who had fertility problems found that taking D-Aspartic Acid for three months helped to increase the number of sperm they were producing.

So, as well as helping to raise testosterone levels, D-Aspartic Acid could also help to improve fertility in men.

Supplements with D-Aspartic Acid

So, you want to try taking D-Aspartic Acid to raise testosterone levels.

There are plenty of options available to you. You can either choose to buy it as a standalone product, or you can take it as part of a testosterone booster.

Testosterone booster supplements are products which contain ingredients such as D-Aspartic Acid and other substances that could help to support healthy testosterone levels.

Some of the leading testosterone booster supplements that use D-Aspartic Acid
Some of the leading testosterone booster supplements that use D-Aspartic Acid

Some of the other good ingredients to look for to support normal testosterone production include Zinc, Magnesium and Vitamin D3.

You should remember that these supplements do not contain any actual testosterone. Rather, they work by giving your body more of the fuel it needs to produce testosterone naturally.

If you’re not quite sure which testosterone boosting supplement to go for, or you’d like to find out more about these kinds of products, you can check out our dedicated guide by following the link shown below.

All of the products in the list contain doses of D-Aspartic Acid as one of their main ingredients.

What’s the Best Dose of D-Aspartic Acid?

Most of the studies mentioned above used doses of D-Aspartic Acid of around 3 grams per day, which is what most standalone supplements contain.

That being said, higher doses of 6 grams or more also showed positive results, while some testosterone boosters use doses less than 3 grams.

Generally speaking, the standard dose of D-Aspartic Acid is 2 to 3 grams per day.

Anything Else To Consider?

If you’ve been trying to find out whether D-Aspartic Acid raises testosterone levels, the chances are that you have been diagnosed as having low testosterone by a doctor, or perhaps you simply suspect that may be the case.

As we’ve discussed above, DAA has shown significant promise in helping to raise testosterone levels – and in a relative short period of time as well.

However, you should always remember that supplements are not substitutes for a healthy lifestyle.

As with all supplements of any type, you should always first make sure that you’re training hard, eating right and getting plenty of rest before considering adding any new products to your daily routine.

That being said, because D-Aspartic Acid has shown so much promise at being able to raise testosterone levels, it certainly is worth giving this supplement a try for yourself, as long as you’re able to combine it with a healthy diet and regular exercise.

There are also a number of other good ingredients such as Fenugreek, which has shown promise in boosting testosterone levels.


So, that brings us to the end of our article on D-Aspartic Acid and its effects on testosterone levels.

We’ve walked you through the basic facts behind this non-essential amino acid and the effects it can have on the body.

So, the all important question is, does D-Aspartic Acid Raise Testosterone?

There is plenty of evidence to suggest that supplementing with D-Aspartic Acid could help to raise testosterone level in men.

Multiple studies have shown that DAA can effectively, and quickly, raise the levels of the male hormone in the human body.

The normal dose is 3g per day, and there are many existing so-called testosterone boosting supplements that already use DAA as an ingredient.