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P6 Extreme Black Review

In 2008, one of the most popular testosterone boosters was P6 Extreme Black. Many users claimed it helped them lift better and build larger muscles. But then with no warning, P6 Extreme Black was retired by its manufacturer Cellucor.

Now P6 Extreme Black is back, with Cellucor claiming it is “ground-breaking” and the “only testosterone booster of its kind.” P6 Extreme Black may have been king in 2008, but how does it compare to testosterone boosters today?

Read on and find out if P6 Extreme Black is on its second rise or if it should have stayed in retirement.

P6 Extreme Black’s Formula

P6 Extreme Black comes with a new formula that Cellucor promises promotes amazing testosterone production, drive, and muscle development. The eight most powerful ingredients in P6 Extreme Black’s formula are:

Vitamin D (3332 iu)
Vitamin D supplements were shown to significantly boost testosterone production.[1] Higher testosterone levels can boost energy and drive, allowing for better workouts and better muscle development.

Vitamin D also serves the body in different ways. For example, it maintains healthy calcium and phosphorus levels, nutrients crucial for proper energy production. In addition, vitamin D facilitates calcium absorption, strengthening bones and teeth.[2]

Vitamin B6 (2 mg)
This ingredient, also called pyridoxine, converts carbohydrates into glucose to be used as energy.[3] Vitamin B6 also improves mood by facilitating serotonin’s release.

Zinc (30 mg)
The correlation between zinc and testosterone has been shown in various clinical studies. It appears that supplementing zinc increases testosterone levels in men.[4]

Copper (2 mg)
Copper, like zinc, positively influence testosterone levels.[5]

Nootropic Testosterone Matrix (2105 mg)

D-Aspartic Acid Magnesium Chelate
D-aspartic acid is an amino acid that a 2009 study showed enhances testosterone release.[6] The form used in P6 Extreme Black serves to facilitate its absorption.

D-serine is an amino acid that works in the brain to facilitate neurotransmission and brain plasticity.[7] Since the signals to produce more hormones largely originate in the brain, this can have a positive impact on testosterone levels.

Androgen Support Matrix (358 mg)

Zinc Monomethionine
This ingredient offers the same testosterone-boosting benefits that zinc provides but with the extra benefit of methionine. Methionine is an amino acid that makes it easier to absorb zinc.

Mucuna Pruriens Seed Extract
Mucuna pruriens seed extract has been shown to promote testosterone production in rats.[8] It may also boost metabolism, helping the body build muscle while burning fat.

Because many P6 Extreme Black ingredients’ studies are limited to animals, it’s unclear how they actually affect humans. In addition, most ingredients are listed without precise dosage information, making it impossible to determine the formula’s effectiveness.

Are There Possible Side Effects?

According to P6 Extreme Black’s label, the product can cause side effects like hair loss (in men), hair growth (in women), irritability, and aggressiveness.

Vitamin D is a source of concern as it can cause side effects such as weakness, headaches, and metallic taste. P6 Extreme Black provides 833% of the recommended daily vitamin D intake.

How Do You Use P6 Extreme Black?

According to the manufacturers, the best way to use P6 Extreme Black is by taking 1 serving (3 capsules) 30 minutes before training. On off-days, take 1 serving with breakfast.

Then, after getting used to P6 Extreme Black, experienced users can up the dosage to 2 servings a day.

It is dangerous to take more than 6 capsules in one 24-hour period.

How Much Does P6 Extreme Black Cost?

Currently, P6 Extreme Black can be purchased online at for $89.99 plus around $5.00 for shipping and handling. Just for a 90-capsule bottle.

As the product gains in popularity, I’m confident that more vendors will start selling the product. Prices could run from $80 – $100 for one bottle.

Does It Have a Guarantee?

Cellucor does offer a 30-day money back guarantee on its products but the product must be purchased directly from the company.

You may have better luck getting a guarantee from the vendor you buy P6 Extreme Black from.

Final Thoughts

P6 Extreme Black has a great blend of clinically clinically proven ingredients. With that said, it’s expensive and it doesn’t come with a money back guarantee. If you want to save a few bucks and protect yourself with a money back guarantee you should look elsewhere.

Check out our top 10 Testosterone Boosting Supplements!


[1]Mayo Clinic. “Vitamin D.” Accessed 4.16.2013.

[2 ] Pilz, S., et al. “Effect of vitamin D supplementation on testosterone levels in men.” Hormone and Metabolic Research, 43.03 (2010): 223-225.

[3] University of Maryland Medical Center. “Vitamin B6.” Accessed 4.16.2013.

[4] See Prasad, Ananda S., et al. “Zinc status and serum testosterone levels of healthy adults.” Nutrition, 12.5 (1996): 344-348.

[5] See Chang, Chung Soo, et al. “Correlation between serum testosterone level and concentrations of copper and zinc in hair tissue.” Biological trace Element Research, 144.1-3 (2011): 264-271.

[6] Topo, Enza, et al. “The role and molecular mechanism of D-aspartic acid in the release and synthesis of LH and testosterone in humans and rats.” Reprod Biol Endocrinol, 7 (2009): 120.

[7] Wolosker, Herman, et al. “d‐Amino acids in the brain: d‐serine in neurotransmission and neurodegeneration.” FEBS Journal, 275.14 (2008): 3514-3526.

[8] Muthu, K., and P. Krishnamoorthy. “Evaluation of androgenic activity of Mucuna pruriens in male rats.” African Journal of Biotechnology, 10.66 (2011): 15017-15016 Evaluation of androgenic activity of mucana pruriens in male rats

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