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Best D Aspartic Acid Supplements

10 Best D-Aspartic Acid Supplements for 2019

If you’re looking for the best D-Aspartic acid supplements to buy this year, then you’ve come to the right place

You can also get more info by jumping to our D-Aspartic Acid Supplements Guide.

Top 10 D-Aspartic Acid Supplements

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#1Bulksupplements Pure D Aspartic Acid SBulkSupplements Pure D-Aspartic AcidGet it on Amazon
#2Primaforce Daa SPrimaforce DAAGet it on Amazon
#3Allmax Nutrition D Aspartic Acid SAllmax Nutrition D-Aspartic AcidGet it on Amazon
#4Hard Rhino D Aspartic Acid SHard Rhino D-Aspartic AcidGet it on Amazon
#5Biotech Nutritions D Aspartic Acid SBiotech Nutritions D-Aspartic AcidGet it on Amazon
#6Nutricost D Aspartic Acid SNutricost D-Aspartic AcidGet it on Amazon
#7Ai Sports Nutrition D Aa Powder SAI Sports Nutrition D-AA PowderGet it on Amazon
#8Nutrabio Daa D Aspartic Acid Powder SNutraBio DAA D-Aspartic Acid PowderGet it on Amazon
#9Genomyx D Aspartic Acid SGenomyx D-Aspartic AcidGet it on Amazon
#10Prime Nutrition D Aspartic Acid SPrime Nutrition D-Aspartic AcidGet it on Amazon

D-Aspartic Acid Supplements Guide

Testosterone is a natural hormone within the human body that is more prevalent in males than females. Many people, both old and young, try to enhance the amount of testosterone their body produces. This can be in an attempt to feel younger, increase strength, improve sexual performance or to build muscle.

This desire drives many people to try different supplements that claim to raise testosterone levels. D-Aspartic Acid is one such supplement that is claimed to improve testosterone. Let’s take a deeper look to discover if these claims are backed up.

If you have ever browsed through a selection of testosterone boosters, chances are that you have come across D-Aspartic Acid (DAA) supplements.

What is D-Aspartic Acid?

It is easy to get confused by the scientific names for supplements that are quite basic in formulation. Simply put, D-Aspartic Acid is a type of amino acid. Amino acids are the building blocks for proteins within the body. They also make up certain neurotransmitters and hormones. More specifically, D-Aspartic acid is one variation of the Aspartic Acid amino acid. The other form is known as L-Aspartic Acid. These two acids are nearly identical with a few particular differences. The ‘L’ and ‘D’ variations are usually referred to as ‘left-handed’ or ‘short-handed’ for abbreviation.

Our bodies don’t use D-Aspartic Acid for building proteins. That responsibility is given to L-Aspartic Acid which occurs naturally in nature and in our body. On the other hand, D-Aspartic Acid helps to release and make hormones in the body. Specifically to testosterone, this amino acid helps to regulate the release of a particular hormone in the brain that would lead to testosterone production. Also, D-Aspartic Acid helps to increase testosterone release and production in the testicles. It is for these reasons that this amino acid has been put into many testosterone boosting supplements.

Where does D-Aspartic Acid come from?

D-Aspartic Acid is known as a non-essential amino acid. This name is given to a special group of amino acids that occur naturally within the human body. ‘Non-essential’ simply implies that these amino acids don’t need to be consumed within the human diet. D-Aspartic Acid is found in the endocrine and nervous system of humans as well as many other animals.

What Are D-Aspartic Acid Supplements?

DAA supplements are made of D-Aspartic Acid, an amino acid that forms when the enzyme Aspartate Racemase gets converted in the testes, hypothalamus, and pituitary gland. DAA can be found in foods containing soy protein, soy-based fat formula, simulated bacon, nondairy creamer, casein, and zein (corn protein). Additionally, DAA can be racemized from L-acetate while heating food. It is thought that pasteurization can double the amount of DAA in raw milk.

  • DAA is a naturally occurring amino acid
  • It is a non-essential amino acid and doesn’t have to be consumed through diet
  • It represents one variation of aspartic acid
  • DAA shares some links to testosterone in the body

Some Studies on D-Aspartic Acid

D-Aspartic Acid has been the topic of many studies attempting to determine this amino acid’s relationship with testosterone production and regulation. As is the case with many studies, the results are mixed and sometimes contradictory. The studies can be split into two categories: those with active participants and those with non-active participants.

The first group of studies didn’t focus on active men. One particular study saw 23 healthy men, aged 27–37, take D-Aspartic Acid supplements for 12 days. At the end of the study, 20 out of 23 of the participants had an average increase of 42% in testosterone levels. Another study oversaw the supplementation of obese and overweight men for a period of 28 days. The results were mixed as some saw no increase in testosterone, while those with lower levels before saw increases over exceeding 20%.

Another group of studies have focused on the effects of DAA in an active environment. One study found no boost in testosterone levels during a 28 day period of taking this supplement. The participants were all weight-lifters. Other studies have found that taking a high-dosage of 6 grams per day results in lower testosterone or no changeat all.


As with most supplements, there are some known side effects, and they tend to manifest a little bit differently from person to person. DAA supplements are good natural alternatives to prohormones and anabolic steroids, which can cause serious side effects (especially to your body’s endocrine system) if taken for an extended period of time. However, DAA supplements do have a few known side effects.

The first is that DAA supplements can cause an increase of dihydrotestosterone (DHT), which is an endogenous androgen sex steroid and hormone that initially triggers puberty. An abundance of DHT can lead to acne outbreaks and hair loss.

Secondly, DAA supplements might cause increases in estrogen levels, which can lead to a plethora of problems, including an inhibited libido, prostate issues, gynecomastia, and bloating. This side effect seems to be pretty rare and theoretically should not occur if you are following your recommended daily dosage and cycling pattern.

Women should avoid using DAA supplements since there is no clinical proof as to how it might affect them. Also, males under the age of 21 should refrain from taking DAA supplements. Males who suffer from hypergonadism (elevated testosterone levels) should avoid taking DAA supplements as well since they do not need them, and having an overabundance of testosterone can lead to minor testicle shrinkage, acne, reduced fertility, an enlarged prostate, and hair-loss.

It should also be noted that anyone who has elevated levels of DHT and/or estrogen or who has hyperthyroidism (in which too much T3 and T4 are produced by the thyroid gland) should not take DAA supplements.

Always speak with a medical professional or doctor before taking any supplements. Always read the product label for instructions and directions.

What to Look for in a Good D-Aspartic Acid Supplement

When looking for a good DAA supplement, the first thing you should do is consult with your doctor. Ask your doctor if they think DAA is the right supplement for you to take. Doctors sometimes have specific brands they recommend for good reasons, and they can give you a clearer idea of how much you should be taking and when you might expect to see some results.

Always check to make sure that whatever product you buy has been thoroughly tested for potency and purity of ingredients. Ideally, you should be taking a DAA supplement that only contains D-Aspartic Acid, which should be clearly indicated on the package’s Supplement Facts list.

In order to truly get your money’s worth, you should be looking for products that are geared to last you for about 3 to 4 months. Some powdered formulas and capsules come in bulk packaging and will save you some money in the long-run, whereas smaller-count capsules tend to only last about a month and are not really that cost-effective since you should plan on continuously cycling through your DAA supplements.

If you do not have the time to keep popping pills into your mouth, you might want to consider finding a pure DAA powdered formula that you can take in a drink with breakfast.

If you think you might benefit from taking DAA supplements, contact your doctor to inquire as to how you might add these into your daily regimen.


There is no doubt that D-Aspartic Acid is related to testosterone levels within the body. The real question is to what degree this amino acid plays a role and by which means. The studies have been contradictory to say the least.

However, it seems to be that DAA does help to support testosterone levels in non-active men. The idea that this supplement helps in weight training still persists in some areas of the general public.

Future studies will hopefully be able to shed some light on the confusion. For now however, these are the results we are left with to make our decisions.

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