Cellucor P6 Black G4

A product by Cellucor

Overall Rating:


Positives Negatives
  • Contains DAA, Fenugreek and Stinging Nettle
  • Servings Need Improving
  • Some ineffective ingredients
  • More core nutrients needed

Review Overview – What does Cellucor’s P6 Black G4 do?

Manufactured by Cellucor, this all natural testosterone booster is claimed to promote;

  • Testosterone
  • Strength
  • Muscle Mass
  • Libido


But how well does it really work?

In this review, we look closer at P6 Black Gen 4 to see how effective it really is.

This is what you need to know;

How are the servings?

Could be better.

With only 2 servings a day, a lot more could be done with this T-booster to get the best results.

Your body is only getting 2 top ups a day, and natural t-boosting is a long game, you need the nutrients constantly in your system.

Ideally you need a well dosed 3 – 4 servings a day, because your body can only absorb so much a time.

You’ll find this more in premium testosterone boosters.

What about the ingredients in P6 Black G4?

They’re okay.

There’s a lot of good ingredients in this product, however there are some not so good ones too.

It’s not the best nutrient profile we’ve seen, but it’s definitely not the worst.

Take a look:


D-Aspartic Acid

One of the better choices for testosterone production.

DAA is used by your body for numerous reactions in the brain, usually with zinc, that promotes the Luteinizing Hormone (LH).

LH is the precursor to both growth hormone and testosterone. DAA is a good strong nutrient – and it’s in a good amount here too.


Tribulus however is terrible.

Although aggressively marketed as a solid testosterone booster – the studies behind it are lacking serious credibility.

There are no human studies out there that support tribulus as an effective testosterone, yet multiple supplement companies jump on the bandwagon of using it – usually older ones.

It’s not a good choice.


Good for libido, and has benefits for T.

Fenugreek is a traditional Indian libido enhancer that can also regulate blood sugar.

This is important for testosterone.

By regulating blood sugar, you can help control insulin levels. Insulin directly interferes with testosterone and can lower overall levels.

By controlling insulin your T has more of an advantage to grow.

Saw Palmetto

Not effective for testosterone – but can help with overall male health.

Saw Palmetto has been seen to help reduce the symptoms of hyperplasia (enlarged prostate) to a mild extent.

It won’t hurt your t-levels, it may promote organ health.

Eurycoma Longifolia

Unfortunately this is a similar boat to tribulus.

Also known as LongJack, Eurycoma Longifolia is a herb that was thought to boost libido and testosterone.

However, studies have shown that it has little to no effect in humans, and may or may not mildly promote libido – there have been mixed results.


Also known as Rhodiola Rosea, and may promote motivation.

This is a brain booster linked to reducing depression and anxiety, while promoting feelings of wellness.

It may help you to have more confidence and motivation while training.

Stinging Nettle

One of the better options for free testosterone.

Stinging Nettle works by interfering with SHBG (Sex Hormone Binding Globulin).

SHBG is a protein in your bloodstream that latches onto testosterone and strips it of its anabolic potency – making it useless.

Nettle inhibits the protein and stops it from activating. This will reduce the overall number and allow you to have more available testosterone.

Tooth Club Moss

Mainly used as a brain booster.

Containing huperzine A, which is linked to memory formations, Toothed Club Moss may promote clarity.

However, studies have shown that his nutrient may need to be cycled as your body can build up a tolerance to it quickly.

Not only that, it doesn’t promote testosterone.

Black Pepper

Nothing special here.

Black pepper may help with overall absorption. It will not help with testosterone levels.cellucor-generation-4-results

Ingredients Bottom Line:

On the whole, this is a good nutrient profile, but it definitely isn’t perfect.

Using ineffective ingredients like LongJack and Tribulus are huge no-no’s in our book.

Not only that it’s a waste of product, considering what they’ve could’ve used instead.

It would’ve been good to have seen some zinc or Vitamin D3 in here, both would’ve made a huge difference.

Side Effects

There have been no side effects reported with P6 Black Gen 4, all the ingredients are natural and safely dosed.

Is there anything better than this Testosterone Booster?

There absolutely is.

We’ve done the research, and looked far and wide for the best supplements on the market that promote:

  1. Muscle Gains
  2. Fat Loss
  3. Testosterone Levels
  4. Energy
  5. Mood
  6. Sex Drive

And it we’ve finally narrowed it down to just three.

These are the best testosterone boosters on the market, that both myself and our readers agree provide the best results. You can check them out below:

The 3 Best Testosterone Boosters

Cellucor P6 Black Gen 4 Review Conclusion

On the whole, this isn’t the best testosterone booster we’ve seen, and there are several reasons why.

From this review, this is what you need to know about P6 Black G4;

  • Servings Need Improving – With only 2 servings a day, you may need more to constantly keep your t-levels on the rise.
  • Ineffective ingredients – Tribulus, LongJack and Toothed Clubmoss have very little effect.
  • Missing core nutrients – Vitamin D3, Zinc and Magnesium are all great T-Boosters and not included in this product.

As you can see, it’s not your best option.

To see what our readers, and editor have had the best results with – check out our current #1 testosterone booster. We’ve given it our full review below:

Our #1 For Boosting Testosterone - TestoFuel

Out of all the T-Boosters I've tried, TestoFuel is the best for Maximum Muscle Gains.

It also:
- Added Strength
- Cut Body Fat
- Boosted My Energy

I took it for 3 Months and I saw some INSANE results!

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