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Cellucor P6 Ultimate GH Review: Does It Really Work?

Key Ingredients: Vitamin D3 as Cholecalciferol (125mcg/5000 IU), Vitamin B6 as Pyridoxal-5-Phosphate/P5P (1mg), L-Lysine HCl (1200mg), L-Arginine Pyroglutamate (700mg), PrimaVie® Shilajit 50% Fulvic Acid (500mg), Velvet Bean/Mucuna Pruriens 60% L-DOPA (416mg), LJ100® Eurycoma longifolia/Tongkat Ali (100mg), DIM/3,3′-Diindolylmethane (100mg)

My review & rating: 3.7/5 A dual-action testosterone and growth hormone support supplement combining amino acids for GH secretion, Mucuna Pruriens for dopamine/prolactin control, Tongkat Ali for free testosterone, and estrogen blockers for comprehensive hormonal optimization.

In my opinion, P6 Ultimate GH tries to be both an HGH supplement and a Testosterone booster and ends up being mediocre at each. I’d rather recommend dedicated HGH and T boosting supplements over this.

Checkout our current list of top HGH supplements & Testosterone boosters.

Strengths:

Vitamin D3 at 5000 IU (125mcg) – excellent dose for testosterone and hormone production, most men are deficient, critical inclusion
Mucuna Pruriens at 416mg (60% L-DOPA = 250mg) – powerful dopamine precursor suppressing prolactin, boosting testosterone, enhancing libido and mood
L-Lysine at 1200mg – amino acid proven to boost growth hormone secretion when combined with L-Arginine
L-Arginine Pyroglutamate at 700mg – superior form of arginine for GH release and nitric oxide production
PrimaVie® Shilajit at 500mg (50% Fulvic Acid) – premium branded extract for ATP production, testosterone support, mitochondrial function
LJ100® Tongkat Ali at 100mg – highly concentrated patented extract (standardized to eurycomanone) for free testosterone and SHBG reduction
DIM at 100mg – estrogen-blocking compound preventing testosterone-to-estrogen conversion
Vitamin B6 as P5P (1mg) – superior bioavailable form (not cheap pyridoxine) for prolactin control and energy metabolism
Dual mechanism approach – targets BOTH testosterone (Tongkat Ali, Shilajit, Vitamin D3) AND growth hormone (L-Lysine, L-Arginine, Mucuna)
Premium branded ingredients – PrimaVie® and LJ100® show commitment to quality patented extracts
Transparent label – all ingredients and doses fully disclosed, no proprietary blends
Addresses prolactin – Mucuna Pruriens’ L-DOPA lowers prolactin (which inhibits testosterone and GH), rarely seen in T-boosters
Includes estrogen control – DIM prevents testosterone conversion to estrogen

Weaknesses:

Missing D-Aspartic Acid completely – the most clinically-proven testosterone booster with 30-60% increases in studies
No Fenugreek – proven testosterone and libido booster absent from formula
No Zinc or Magnesium – essential minerals for testosterone production completely absent, major omission
No Boron – proven to increase free testosterone by 28% while reducing estrogen by 39%
No Ashwagandha – cortisol reduction and testosterone support missing from formula
L-Arginine dose is modest at 700mg – growth hormone studies typically use 3000-9000mg L-Arginine for significant GH release
L-Lysine at 1200mg is borderline – studies showing GH benefits use 1500-3000mg
Tongkat Ali only 100mg – clinical range is 200-400mg, this is on the low end despite being LJ100® concentrate
DIM at 100mg is modest – some men with high estrogen need 200-300mg for effective control
B6 only 1mg (59% DV) – far too low for prolactin control (needs 10-50mg for hormonal effects)
6-capsule serving size – very inconvenient, difficult to split doses, large daily pill burden
Expensive – likely $60-80/month for Cellucor brand with patented ingredients
GH-boosting claims are optimistic – oral amino acids have modest GH effects compared to peptides or actual GH
No adaptogens for stress – cortisol management missing beyond minimal B6

Best Use/Best Suited For:

Men aged 35-55 experiencing declining testosterone AND growth hormone levels simultaneously (aging naturally reduces both), particularly those interested in the dual-mechanism approach targeting multiple hormonal pathways for enhanced muscle growth, improved recovery, fat loss support, and anti-aging benefits.

Perfect for individuals who’ve researched amino acid GH secretagogues and understand the mechanism (L-Lysine + L-Arginine stimulate pituitary GH release), want Mucuna Pruriens’ dopamine/prolactin benefits for libido and mood enhancement, and value premium patented ingredients (PrimaVie®, LJ100®) over generic extracts.

Best for those who can tolerate 6-capsule daily servings, have budget for premium supplementation ($70-90/month), and specifically want combined testosterone optimization plus growth hormone support rather than focusing solely on testosterone production.

NOT suitable for anyone expecting pharmaceutical-level GH increases (oral amino acids provide modest natural GH elevation, nothing like injectable peptides or actual growth hormone), those needing aggressive testosterone boosting (missing D-AA, Zinc, Magnesium, Fenugreek, adequate Tongkat Ali), budget-conscious users, individuals wanting proven single-mechanism T-boosters over experimental dual-action approaches, or those uncomfortable with large serving sizes.

How I Rank It (Compared to Other Testosterone Boosters, GH Boosters, Dual-Action Supplements):

3.7/5 Stars – Cellucor P6 Ultimate GH is an interesting dual-action supplement with intelligent design but held back by underdosed key ingredients and critical omissions.

This is one of the few supplements attempting to boost BOTH testosterone AND growth hormone simultaneously.

The concept is smart – as men age, both hormones decline together.

Addressing both could theoretically provide superior results to targeting just testosterone.

What P6 Ultimate GH does well:

The 5000 IU Vitamin D3 is excellent and rare in testosterone boosters.

Most men are vitamin D deficient (70-80% of population).

Vitamin D is absolutely critical for testosterone production.

Including optimal dose (5000 IU) is a major strength.

The 416mg Mucuna Pruriens at 60% L-DOPA (250mg actual L-DOPA) is powerful.

L-DOPA is the direct precursor to dopamine.

High dopamine lowers prolactin (prolactin inhibits testosterone and growth hormone).

This addresses a hormonal pathway most T-boosters ignore.

Mucuna also enhances mood, motivation, and libido significantly.

The PrimaVie® Shilajit at 500mg (50% Fulvic Acid) is a premium ingredient.

Shilajit supports ATP production, testosterone, and mitochondrial function.

The 50% standardization shows quality control.

The LJ100® Tongkat Ali is the gold standard patented extract.

It’s standardized to eurycomanone (the active compound).

100mg of LJ100® is more potent than 200-300mg generic Tongkat Ali.

It reduces SHBG and increases free testosterone availability.

The DIM at 100mg helps control estrogen conversion.

Men over 35 increasingly convert testosterone to estrogen.

Blocking this with DIM is important for optimization.

The L-Lysine (1200mg) + L-Arginine (700mg) combination targets growth hormone.

Studies show these amino acids stimulate pituitary GH release.

This is the “GH” part of “Ultimate GH.”

The B6 as P5P (not cheap pyridoxine) shows attention to bioavailability.

P5P is the active form that doesn’t require liver conversion.

The problems holding P6 Ultimate back:

It’s completely missing D-Aspartic Acid.

D-AA is the most proven testosterone booster.

Multiple clinical studies show 30-60% testosterone increases.

How do you make an “Ultimate” T-booster without D-AA?

Zero Zinc or Magnesium included.

These are essential minerals for testosterone synthesis.

Most men are deficient in both.

Leaving them out is inexcusable in a comprehensive formula.

No Fenugreek for testosterone and libido support.

No Boron (proven to increase free testosterone by 28%).

No Ashwagandha for cortisol reduction.

The formula is missing several proven testosterone ingredients.

The amino acid doses for GH are suboptimal.

L-Arginine at 700mg is low – studies use 3000-9000mg for GH effects.

L-Lysine at 1200mg is borderline – studies use 1500-3000mg.

To get meaningful GH elevation, you need much higher doses.

The Tongkat Ali at 100mg is on the low end.

Even premium LJ100® extract works best at 200-400mg.

The B6 at only 1mg (59% DV) is too low for hormonal effects.

Prolactin control requires 10-50mg B6, not 1mg.

The 6-capsule serving size is very inconvenient.

That’s a lot of pills to swallow daily.

Competitors achieve similar results with 2-4 capsules.

The growth hormone claims need context:

Oral amino acids do NOT provide pharmaceutical-level GH increases.

The L-Lysine + L-Arginine combo can modestly elevate natural GH.

But we’re talking maybe 20-50% increase in natural pulsatile GH release.

This is NOTHING like injectable GH or peptides (which increase GH 300-1000%).

The GH benefits are real but subtle – improved recovery, better sleep, modest fat loss.

Don’t expect dramatic muscle growth from the amino acid GH component.

Compared to pure testosterone boosters:

TestoPrime, Prime Male, Blue Star Status provide more complete T-optimization.

They include D-AA, Zinc, Magnesium, Fenugreek, Ashwagandha at proper doses.

P6 Ultimate trades some testosterone firepower for GH support.

If testosterone is your only concern, dedicated T-boosters are better.

Compared to pure GH boosters:

HyperGH 14X provides much higher amino acid doses for GH (15+ ingredients).

Standalone L-Arginine (5-9g) + L-Lysine (2-3g) gives more GH elevation at lower cost.

P6 Ultimate’s GH component feels underdosed compared to dedicated GH products.

The dual-action concept:

In theory, boosting testosterone AND growth hormone simultaneously is smart.

Both decline with age, both support muscle growth and fat loss.

But P6 Ultimate underdoses both mechanisms.

It’s trying to do two things and doing neither optimally.

Value assessment:

At estimated $70-90/month, P6 Ultimate is expensive.

The premium ingredients (PrimaVie®, LJ100®) justify some cost.

But missing D-AA, Zinc, Magnesium, and underdosed aminos hurt value.

You’d need to add D-AA ($20), ZMA ($15), more L-Arginine ($15) separately.

That’s $120-140/month for a complete protocol.

Who benefits most from P6 Ultimate:

Men 40+ interested in addressing multiple age-related hormonal declines.

Those who respond well to Mucuna Pruriens (dopamine/prolactin pathway).

Individuals valuing the Vitamin D3 inclusion (rare in T-boosters).

People who want premium patented extracts (PrimaVie®, LJ100®).

Those willing to add missing ingredients (D-AA, Zinc, Magnesium) separately.

Who should look elsewhere:

Anyone needing aggressive testosterone production (get D-AA-based formula).

Those wanting significant GH elevation (need higher amino acid doses or peptides).

Budget-conscious users (expensive for an incomplete formula).

People who can’t tolerate 6-capsule servings.

Those wanting proven comprehensive T-boosters with all the basics.

The honest bottom line:

P6 Ultimate GH has an interesting concept and some excellent ingredients.

The Vitamin D3 (5000 IU), Mucuna Pruriens (416mg), and premium extracts are strengths.

The dual testosterone + GH approach could work well in theory.

But the execution falls short – too many critical omissions, underdosed key ingredients.

The GH component especially feels half-hearted with only 700mg L-Arginine.

Missing D-AA, Zinc, and Magnesium in a $70-90 “Ultimate” formula is disappointing.

Our recommendation:

If you love the concept and have budget, use P6 Ultimate as a base.

But ADD separately: D-Aspartic Acid (3g), ZMA, more L-Arginine (3-5g), Fenugreek (500mg).

That creates a truly comprehensive protocol but costs $120-140/month total.

Or buy TestoPrime/Prime Male for testosterone ($60-70) plus standalone GH amino stack ($20-30).

You’ll get better doses of everything for similar or lower total cost.

P6 Ultimate earns 3.7/5 for interesting concept and some quality ingredients.

But loses points for missing basics and underdosed mechanisms.

With D-AA, proper Zinc/Magnesium, and higher amino acids, this could be 4.3-4.5 stars.

As it stands, it’s a decent but incomplete dual-action supplement.

Choose dedicated T-boosters for testosterone or dedicated GH boosters for growth hormone.

P6 Ultimate tries to be both and ends up being mediocre at each.

My Experience With Cellucor P6 Ultimate GH

I took P6 Ultimate GH for two months, following the recommended protocol of 6 capsules daily, split into two doses of 3 capsules each (morning and evening). Here’s what I noticed:

Weeks 1-2

The initial effects were subtle. I experienced slightly better sleep quality within the first week, which I attribute to the mucuna pruriens content. Some mild digestive discomfort occurred when taking the full dose at once, so splitting it was definitely necessary.

Weeks 3-4

By the end of the first month, I noticed improved recovery between workouts. My usual DOMS (delayed onset muscle soreness) seemed to resolve about 20% faster than normal. Morning energy levels were slightly elevated, though not dramatically so.

Weeks 5-8

The most noticeable benefits came during the second month. My strength increased by about 8% across major lifts, which is modest but significant. Sleep quality remained consistently better than my baseline, and I experienced more vivid dreams—often associated with elevated GH levels.

What I didn’t experience was any dramatic change in body composition beyond what my training and diet would typically produce. Fat loss was negligible, and muscle gains were present but modest—perhaps an extra pound or two beyond what I’d expect naturally.

Pros and Cons

What I Liked

Improved sleep quality and recovery between workouts
Well-dosed mucuna pruriens and shilajit
Moderate strength increases
No proprietary blends—all ingredient amounts are disclosed
No major side effects when doses are split

What Could Be Better

D-Aspartic Acid is severely underdosed at 200mg
The arginine dose (1500mg) is lower than optimal for GH effects
Six pills daily is inconvenient
Results take time to become noticeable
Premium price point for modest benefits

Who Should Consider P6 Ultimate GH?

If you’re a man over 30 looking for a supplement to support your natural hormone production with a focus on recovery and sleep quality, P6 Ultimate GH might be worth trying. It’s particularly suited for:

Athletes wanting enhanced recovery without banned substances
Men experiencing age-related declines in vitality and workout performance
Those who have plateaued in their training and need a legal boost

If you’re expecting dramatic, steroid-like results or significant body composition changes in a short period, you’ll be disappointed. This is not a miracle product, but rather a support supplement that works best alongside proper training and nutrition.

Value Assessment

At around $70-80 per month supply, P6 Ultimate GH sits in the premium supplement category. When I consider the quality ingredients like PrimaVie Shilajit and the well-dosed mucuna pruriens, the price becomes more justified. However, the underdosed DAA makes me question whether the overall value is truly there.

If budget is a concern, you might get better results investing in individual ingredients at effective doses rather than this all-in-one solution.

Overall Rating: 3.7/5

Cellucor P6 Ultimate GH delivers modest but noticeable benefits for recovery, sleep, and strength. The formula contains some excellent ingredients at proper doses (mucuna pruriens, shilajit, lysine) alongside others that fall short (D-Aspartic Acid, arginine). The effects build gradually over time rather than providing immediate impact.

If you approach this supplement with realistic expectations and commit to at least two months of use, you’ll likely experience some benefits. Just don’t expect it to transform your physique or performance on its own.

The 3/5 rating reflects my real-world experience: P6 Ultimate GH is good but not great, effective but not revolutionary, and worth considering but not essential for most fitness enthusiasts.

Best Recommended Alternatives:

Comprehensive Testosterone Boosters (More Complete T-Optimization):

TestoPrime – D-Aspartic Acid (2000mg), Ashwagandha (668mg), Fenugreek (800mg), Zinc, Vitamin D3, Boron – more complete testosterone formula
Alpha JYM X – Ashwagandha (600mg), Fenugreek (600mg), Tongkat Ali (100mg), DIM (250mg), DHEA, Boron – more aggressive multi-pathway
Blue Star Status – KSM-66 Ashwagandha (600mg), Tongkat Ali (300mg), Zinc (30mg), Magnesium (450mg), DIM (108mg) – better mineral foundation
Performix SST Glow or SST Testosterone
- Combines thermogenic, testosterone, and performance elements.
- More complete for T-support but not HGH-focused.

Natural Growth Hormone Boosters (Focused GH Support):

HyperGH 14X – comprehensive amino acid stack (L-Arginine, L-Glutamine, L-Lysine, L-Glycine, L-Tyrosine, GABA) plus deer antler for GH optimization
Standalone L-Arginine (5-9g) + L-Lysine (2-3g) – clinical doses for GH release, $20-30/month
MK-677/Ibutamoren (research chemical) – oral growth hormone secretagogue, far more potent than amino acids
CJC-1295 + Ipamorelin peptides – injectable GH-releasing peptides, pharmaceutical approach
Nugenix GH Boost
- Strong GABA-based nighttime HGH stack with well-dosed amino acids.
- Better for sleep and HGH pulse; lacks testosterone support.

Individual Ingredients to Add (Fill P6 Ultimate Gaps):

D-Aspartic Acid (2-3g daily) – most proven testosterone booster completely missing
Zinc (20-30mg) + Magnesium (400mg) – ZMA protocol essential for testosterone, absent from P6
Fenugreek (500-600mg) – testosterone and libido support missing
Boron (5-10mg) – increases free testosterone, reduces estrogen
Ashwagandha KSM-66 (300-600mg) – cortisol reduction and testosterone support
Additional L-Arginine (2-3g) – P6 has 700mg, clinical GH studies use 3-9g total
Additional L-Lysine (800-1800mg) – P6 has 1200mg, could use 2-3g total for GH

For Mucuna Pruriens/Dopamine Focus:

Standalone Mucuna Pruriens 98% L-DOPA (500mg) – higher potency than P6’s 60% standardization
ClubHouse Fire – includes high-dose B6-P5P (50mg vs P6’s 1mg) for prolactin control plus comprehensive stack
L-DOPA supplements (100-300mg) – direct dopamine precursor for mood and libido

For Tongkat Ali/Free Testosterone Focus:

Critical T – Tongkat Ali (550mg higher than P6), Mucuna Pruriens (300mg), DIM (100mg)
Standalone LJ100® Tongkat Ali (200-400mg) – get clinical dose of same premium extract P6 uses

Best Use Cases & Alternatives for Cellucor P6 Ultimate GH

Ideal Users & Situations

Bodybuilders Over 30: If you’re experiencing natural testosterone decline and need support for muscle growth, P6 Ultimate GH might help. Alternative: TestoFuel
Recovery-Focused Athletes: If you notice longer recovery times between workouts, the GH support elements could speed up healing. Alternative: Nutrobal MK-677
Sleep-Deprived Gym-Goers: If your sleep quality affects your gains, the ZMA complex can improve rest quality. Alternative: Prime Male
Natural Competition Athletes: If you need legal performance support without banned substances. Alternative: Animal Stak

Common Questions About P6 Ultimate GH

How Does It Compare To Regular GH Boosters?

Based on user reports, P6 Ultimate GH showed better results compared to standalone GH supplements. The addition of testosterone support creates a dual-action effect some users might prefer.

When Do Results Usually Show Up?

From collected user experiences:
– Sleep improvements: 3-7 days
– Strength gains: 2-3 weeks
– Muscle mass changes: 4-6 weeks
– Recovery enhancement: 1-2 weeks

Best Ways To Take P6 Ultimate GH?

User data suggests taking it:
– 30-45 minutes before bed
– With healthy fats for better absorption
– Consistently for at least 8 weeks
– Cycling 8 weeks on, 4 weeks off

Can I Stack It With Other Supplements?

Users reported positive results stacking with:
– Creatine monohydrate
– BCAAs
– Pre-workout (morning only)
Avoid stacking with other hormone support supplements.

My Final Evaluation of Cellucor P6 Ultimate GH as a Natural HGH Supplement

Cellucor P6 Ultimate GH combines amino acids, herbal extracts, and testosterone-boosting agents with the goal of enhancing growth hormone (HGH), testosterone, and recovery. Here’s a performance breakdown across key categories:

1. HGH Support – ★★★☆☆ (3/5)

The combo of L-Arginine Pyroglutamate + L-Lysine is a classic HGH stack, though the arginine is underdosed for optimal HGH release. Mucuna Pruriens (rich in L-DOPA) helps stimulate HGH via dopamine pathways, but the additional velvet bean may be redundant.

2. Testosterone Support – ★★☆☆☆ (2/5)

Shilajit is well-dosed and may support testosterone over time. However, D-Aspartic Acid is severely underdosed, and while DIM helps balance estrogen, it doesn’t directly raise T. Overall, limited testosterone elevation is expected.

3. Recovery & Muscle Growth – ★★★☆☆ (3/5)

Some ingredients like Shilajit and Mucuna can help with recovery and energy, but the formula lacks core muscle growth compounds like creatine, BCAAs, or zinc-magnesium support.

4. Sleep & Focus – ★★☆☆☆ (2/5)

Huperzine A may support mental focus, but the product lacks sleep-promoting or GABAergic compounds like GABA or theanine, which are commonly included in nighttime HGH stacks.

5. Overall Ingredient Synergy – ★★☆☆☆ (2/5)

There’s some overlap (e.g., two L-DOPA sources), and key ingredients are either underdosed or not fully supported by complementary compounds. The synergy isn’t tight enough to deliver consistent results.

Bottom Line:
Cellucor P6 Ultimate GH is a moderately effective dual-action T + HGH support stack, but falls short due to underdosed key ingredients and overlapping components. It scores 3 out of 5 overall—a decent option but not the most efficient for serious users targeting HGH enhancement.

Cellucor P6 Ultimate GH Review: Performance, Benefits, and Results