Testosterone Booster Reviews and Information

IAST.net provides honest, fact-based testosterone booster reviews about the best supplements on the market -the ones that really work. We also provide general information on the hormone, as well as natural testosterone boosting techniques, popular ingredients and discuss the potential side effects. If you are looking to learn more about testo-boosting, you’ve come to the right place!

Testosterone Booster Reviews

The Top Five Testosterone Boosters

Our painstaking research has led us to the following top rated legal testosterone boosters:

Testogen Product Review#1 Testogen

Why? – The top 5 boosters are extremely close in terms of quality and value. We chose Testogen as the best testosterone supplement on the market for these reasons.

  • It contains “The Big Three” in terms of natural testosterone boosting ingredients… D-Aspartic Acid, Zinc and Tribulus Terrestris
  • The total potency of each serving is just under 3 grams – 2.9 grams – delivering the most nutrition per serving than any others
  • The other ingredients are sound, proven ingredients such as B-Complex, Vitamin D3, Selenium, Ginseng and Fenugreek.
  • Testogen lists the amount of each nutrient so you know exactly what you are getting per serving
  • At $53.17 for one bottle it is less expensive than its competitors but delivers more, so the value is exceptional


Testosterone Max Review#2 Testosterone Max

Why? – Picking the #2 ranked booster wasn’t as easy as picking #1. Here’s why we put Testosterone Max as the runner up…

  • Testosterone Max also contains “The Big Three” D-Aspartic Acid, Zinc and Tribulus Terrestris and has them in high potencies
  • In fact, it is the exact same formula as Testogen but in slightly lower potencies
  • At $59.99 per bottle it is slightly more expensive than Testogen and $10 less than TestoFuel(#3) and Prime Male(#4)
  • The manufacturer of Testosterone Max, CrazyBulk has an extraordinary line of muscle-building formulas and has a lot of credibility
  • The product lists the amount of each nutrient so you know exactly what you are getting per serving


TestoFuel Testosterone Booster#3 TestoFuel  

Why? – The difference between #3 and #4 is negligible but we gave the nod to TestoFuel because it has a higher amount of D-Aspartic Acid. Here’s some other factors…

  • TestoFuel has the highest amount of D-Aspartic Acid in any testosterone booster we’ve reviewed
  • The total potency per serving is almost as much as Testogen at 2.8 grams
  • It contains the other important testosterone booster ingredients such as zinc, magnesium, b-complex and fenugreek
  • Curiously it is missing Tribulus Terrestris
  • At $69.99 per bottle it is over $15 more than Testogen and $10 more than Testosterone Max


Prime Male One Month Supply#4 Prime Male

Why? – One can make a strong argument that Prime Male easily deserves to be #3 (or even #1) for that matter. We put it at #4 because of the following reasons…

  • It contains a high potent amount of D-Aspartic Acid but 500 mg less than TestoFuel
  • It contains 300 mg of Mucuna Pruriens, a great testosterone booster and also plays a role in increasing libido. (TestoFuel contains no Mucuna Pruriens)
  • Other than Mucuna Pruriens the other ingredients are identical to TestoFuel
  • It also contains 2.8 grams of total nutrition per serving
  • At $69.99 per bottle it is over $15 more than Testogen and $10 more than Testosterone Max


P6-extreme-black-review#5 P6 Extreme Black

Why? – P6 Extreme Black is a remake of an old classic P6 Black from Cellucor that was banned in the mid-2000’s because of the ingredient Andros. The new version is a little different than our top 4 picks but still a worthy contender. Here’s why it made our top 5 list…

  • It contains D-Aspartic Acid and Zinc but because of the proprietary blend format on the label, we don’t know how much DAA is in the product
  • It also contains Mucuna Pruriens but again, we are not sure how much
  • We love the Nootropic additions… the concentration-enhancing, mental-energy ingredients of D-Serine and Alpha GPC. These make the formula unique
  • At around 2.8 grams per serving it is right up there in potency with Testogen, TestoFuel and Prime Male
  • We don’t like the price of this booster at $89.99 a pop. Yikes!


There you have it. Our top five testosterone boosters. One can make an argument for any one of these to be #1 and they would not be far off the mark.


Why Believe Us? Our Review Criteria

Let’s be honest. It’s hard to trust many review sites. A lot of “reviews” are simply pages of regurgitated sales copy of someone trying to make a commission.

We base our reviews on two factors…

#1 The ingredients, quality of ingredients and potencies of the ingredients that make up the formula.

The label never lies. This does not mean that manufacturers won’t try to manipulate or spin the label for marketing purposes. They do this all the time.

But at the end of the day, IAST.net understands what ingredients are going to promote natural testosterone boosting. We also know what quantities of these ingredients are necessary to achieve results.

We base our reviews predominantly on the ingredient make-up of the formula because again… The label always tells the truth.

#2 Our personal experience from using the formula and/or an exhaustive analysis of other people’s experience from using the formula.

Unlike the scientific method of analyzing the ingredients to determine a testosterone booster’s effectiveness, personal experience and other people’s testimonials, though disturbingly subjective, is still a useful tool to gauge the value of a product.

Our team actually practices what we type. We are testo-booster users. We are constantly trying new boosters and conducting our own research, using ourselves as the guinea pigs. But it’s impossible to personally use every booster for long enough periods of time to determine the true effectiveness.

We also rely on testimonials from other users and scour the Internet to find “legitimate” testimonials. (Legitimate being the key word.) We avoid the testimonials on the manufacturers sites because it goes without saying that these are ummm… biased.

However, using sophisticated search tools and a lot of elbow grease, we find dozens and dozens of honest reviews on message boards, Amazon, Yahoo, bodybuilding forums, etc. to get a “feel” for how people are responding to the product. Though not an exact science, it is “indicative” of the general attitude and feeling about a product. It also gives us insight into many companies Customer Service practices as many of these reviews talk about their experience in dealing with refunds, returns, billing issues, etc.

More Than Just Reviews | A Library of Testosterone Information  

While it’s true, we write a lot of product reviews of brand name testo-boosters, we also have dozens of articles about how to naturally increase testosterone safely, the ingredients used in boosters, prescribed testosterone and more.

Some of our most popular articles are…

How To Buy Testosterone Boosters

Top Testosterone Boosting Foods

Testosterone Booster Side Effects

Do Testosterone Boosters Work?

Low Testosterone Symptoms

Testosterone Booster Ingredients

5 Ways to Increase Testosterone Naturally

We believe that when you educate yourself about testosterone and testosterone boosters, you are less likely to get ripped off. It’s the give a man a fish; teach a man to fish principle.

Testosterone Booster Reviews