The #1 Rated Testosterone Supplement of 2021

Testosyn is unquestionably the #1 testosterone supplement that's ever been available. The revolutionary formula is proven to dramatically boost testosterone levels more powerfully than any other testosterone booster on the market. And every order is 100% GUARANTEED to deliver results!

Click To Learn More About The #1 Rated Testosterone Supplement

D-Aspartic Acid Side Effects

d-aspartic acid side effects

D-Aspartic Acid (DAA) has emerged onto the sports supplements scene and is attracting a lot of attention.

Male athletes are using this amino acid to increase testosterone and growth hormone for improved athletic performance while many men are using it simply to feel healthier and younger.

It has also shown effectiveness for treating male infertility and may even boost cognitive performance.[1]

Many athletes hesitate to take DAA because of the sparse amount of research supporting its use. While limited, current research has uncovered information regarding d-saprtic acid side effects and adverse reactions that may pose some concern.

See the Top-Rated Testosterone Supplements: Click Here to Find the Most Recommended Testosterone Supplements

Possible D-Aspartic Acid Side Effects

DAA is generally believed to be a safe supplement for increasing testosterone although it may cause some minor side effects.

According to customer discussions on user forums, it seems the most prevalent side effect is acne.

Adults who have never had skin problems have reported break outs, which experts believe is most likely due to DAA’s influence on hormonal balance. Researchers have not thoroughly investigated the link between DAA and acne, but breakouts are a common side effect of natural ingredients that have been shown to boost the testosterone especially in the first few weeks of use as the body adjusts to the hormone changes.[2]

Rodja, a PES Rep on, states “those that are prone to anxiety or stress tend to experience the negative emotional effects when using DAA.”[4] However, more research is needed to confirm this effect.

More research is needed regarding the link between DAA and the possibility of additional side effects. However, at this time it’s best for people to discuss their health with their doctor before using anything containing DAA.[5]

DAA is known to cause chronic headaches and a significant increase in blood alcohol levels. It has also been linked to acute and chronic nervous disorders. Scientists think this is due to overstimulation of nerve cells which causes rapid firing action. This causes nerve cell degeneration and problems with voluntary muscle movement.[6]

How D-Aspartic Acid Affects Teens

Because DAA is an amino acid, many teen athletes wonder if supplementation is safe for boosting testosterone. Tim Muriello, a fitness and supplement expert for, provides answers for teens wanting to increase testosterone.

According to Muriello, male teenagers do not benefit from taking testosterone boosters such as DAA. Human males undergoing puberty already have high amounts of testosterone swirling in his body and won’t benefit from increasing it through supplementation.[11]

Furthermore, testosterone supplements destroy the body’s natural ability to produce testosterone. Muriello says supplementation conditions the body to rely on artificial and temporary testosterone sources, which shuts down natural production. This adverse effect on teens can last into adulthood.[11]

Also, teens supplementing with testosterone boosters such as DAA experience increased acne breakouts all over the body, including back and arms. And finally, teenage males are prone to moodiness and aggression when testosterone levels are altered.[11]

Correct Dosing to Minimize the D-Aspartic Acid Side Effects

While there isn’t an official recommended daily dose, experts normally suggest 2-3 g DAA daily.

Some people suggest cycling on for 12 days and cycling off for another 12 days. Other experts assert 90 days is the minimal dosing period for improving testosterone and male infertility. This seems best left to personal preference, however.[1]

Pill Bottle With Spoon DosingHereToStudy, a representative for, says this about dosing recommendations: “The 12 days is enough to reach the 40+% boost in [testosterone], the effects will slowly lower for 12 days, and then you re-raise them. The fact that the research is new is what leads me to believe they don’t want to push it past the point of the study.”[12]

For the Best D-Aspartic Acid Supplements, visit

As researchers only recommend 2-3 g per day, it should be easy to avoid a dose that leads to any serious side effects.[1][9]

More research is required before we know the minimal dose to receive effects or adverse effects associated with particular dosing amounts. Until then, it is best to start with expert recommendations. If you don’t experience any side effects, experiment with dosing amounts until you find an optimal dose that maximizes your results without causing side effects.


[1] “D-Aspartic Acid.” Available from:

[2] “DAA and Acne.” Available from:

[3] “D-Aspartic Acid Side Effects?” Available from:

[4] D Aspartic Acid & Negative Side Effects.” Available from:

[5] Olivera Stanojlovic, Dragana Zivanovic, Veselinka Susic. “N-Methyl-Aspartic Acid- and metaphit-induced audiogenic seizures in rat model of seizures.” Pharmacological Research. Volume 42m Issue 3, September 2000, pages 247-253. Available from:

[6] “Side Effects of Aspartic Acid.” Available from:

[7] M.V. Sofroniew and R.C.A. Pearson. “Degeneration of cholinergic neurons in the basal nucleus following kainic or N-methyl-D-aspartic acid application to the celebral cortex in the rat.” Brain Research. Volume 339, Issue 1, July 22 1985, pages 186-190.

[8] Carlos Portera-Caillliau, Donald L. Price, Lee J. Martin. “Non-NMDA and NMDA receptor-mediated excitotoxic neuronal deaths in adult brain morphologically distinct: Further evidence for an apoptosis-necrosis continuum.” Journal of Comparative Neurology. Volume 378, Issue 1, pages 88-104. February 3, 1997. Available from:;2-G/abstract;jsessionid=138911FE6168731DD6AB57160797424B.f03t04?deniedAccessCustomisedMessage=&userIsAuthenticated=false

[9] J. David Leander, Ronald R. Lawson, Paul L. Ornstein, Dennis M. Zimmerman. “N-methyl-D-aspartic acid-induced lethality in mice: selective antagonism by phencyclidine-like drugs.” Brain Research. Volume 448, Issue 1, May 10 1988, pages 115-120. Available from:

[10] Steven M. Rothman and John W. Olney. “Excitotoxity and the NMDA Receptor.” Trends in Neurosciences. Volume 10, Issue 7, July 1987, pages 299-302. Available from:

[11] “Why Teens Should NOT Use Testosterone Boosters.” Available from:

[12] “D-Aspartic Acid Dosing Schedule?” Available from:

Leave a Comment on This Article

Popular Supplement Reviews

Must Read Articles

#1 Testosterone Booster




90 Day

Retail Price:


Lowest Price:


  • Get Harder, Bigger Erections
  • Boosts Sexual Appetite
  • 100% Money Back GUARANTEE

Under Federal Regulation, the Federal Trade Commission requires that disclosures on any relationship which provide any compensation at any time. From time to time, this website requires revenue to provide free services to all users. Some links on this website contain affiliate or referral links that compensates us for buying a product or service after being referral to from our website due to any mention or recommendation. For that we are compensated with a commission.

Copyright© 2021 | All Rights Reserved | Privacy Policy | Disclosure