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Layer 1 · Decision
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Life Extension

Cognitex Elite Pregnenolone

Cognition · Tablet · 30 servings

Label snapshot

What the label says

What the product contains and what one serving costs, according to our catalog. Label amounts are not personal dose recommendations.

Active per serving
Ashwagandha 125 mg
Form
Tablet
List price (catalog, USD)
$39.94
Price per serving
$1.33List price divided by servings per container. A per-day cost only if the label serving is once daily.
Full label record: servings, testing, ingredients
Servings per container
30
Catalog monthly estimate
$39.94
Testing disclosure
Brand lists third-party testing; no public lab certificate listedStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.

Ingredients as listed

IngredientAmount per serving
Ashwagandha125 mg

What to check on the label

  • The standardisation line for botanicals (for example 'bacosides 45%' or a branded extract name).
  • For mushroom products, whether the label states fruiting body or mycelium and the extract ratio.
  • Multi-ingredient formulas list each amount below. A long list usually means smaller amounts of each.

Amounts are per label serving as recorded in the catalog and are not a recommendation. Testing status reflects what the brand lists. Nothing here is medical advice.

Editorial score and research-dose calculations

These calculations describe our scoring method. They are not a recommended dose or proof of benefit from this product.

5.0/10
Overall score
#14 / 15 in Cognition

Tested by independent lab.

Read the full evidence vault
Add to compareVisit brand site →
Watch out
Tier 4
Ingredient RCT (different dose)
The ingredient was tested in an RCT but at a different dose, or only in animals.
How we scored this product Show the full breakdown
Dose vs. studies (50%) Why 4.5 of 10. Primary ingredient is Ashwagandha (evidence grade B). It delivers only 125 mg, 42% of the studied range low edge (300 mg). Under-dosed. Read the rule → 4.5
Transparency (20%) Why 8.0 of 10. Earned points for independent third-party testing and all doses disclosed. Lost points for no public certificate of analysis. Read the rule → 8.0
Value (10%) Why 3.0 of 10. One day at the trial dose costs about $6.39. That is one of the pricier options in the catalog (288 of 313 by cost per effective day). Read the rule → 3.0
Formulation (10%) Why 5.0 of 10. No published absorption advantage or disadvantage on file. The default of 5 is not a criticism. Read the rule → 5.0 Default. No absorption data on file.
Safety (5%) Why 7.0 of 10. Baseline 5.0. Third-party testing adds 2.0. Public lab certificate adds 1.5. NSF, USP or Informed Choice certification adds 1.5. Active safety signal subtracts 3.0. Read the rule → 7.0
Community sentiment (5%) Why 9.0 of 10. No external reviews found, so community sentiment defaults to neutral. Community never counts as clinical evidence. Read the rule → 9.0
Composite How this 5.0 is built. 0.50 × 4.5 + 0.20 × 8.0 + 0.10 × 3.0 + 0.10 × 5.0 + 0.05 × 7.0 + 0.05 × 9.0 = 5.0 out of 10. Safety caps applied after. 5.0
5.0 composite
Dose vs. studies50%4.5
Transparency20%8.0
Value10%3.0
Formulation10%5.0
Safety5%7.0
Community5%9.0

Evidence gates dose: the evidence grade sets the ceiling, and the dose decides how much of that ceiling the product reaches. Value = inverse of price-per-trial-dose-day. Community = mean sentiment of external reviews. Safety caps applied after weighting.

This score is our editorial judgment, not a scientific standard. We combine published evidence, dose, price, transparency, and consumer signals into one composite: this is our method, not a peer-reviewed clinical rating. A higher score means a product does better on the factors we weight, not that it is medically proven to work.

Read the full method →

Editorial verdict

Quick verdict

5.0 / 10
Best for
Basic coverage
Avoid if
Only 42% of trial dose, No public lab certificate
Full-dose status
42% of trial dose
Price/month
$40
COA status
Not public
Biggest caveat
Dose-evidence score of 4.5 is below average for the site.
Nearest alternatives
Catalog snapshot. Check linked sources for current price, label and batch-specific testing.
Price verification
Current price: $39.94
Last price check: Sep 01, 2026
Add to compareVisit brand site →
Layer 2 · Context
In plain language

Why this scored this way

This Life Extension Cognitex Elite Pregnenolone scores 5.5, making it below the site average. It delivers 125mg of Ashwagandha, 41% of the studied range low edge (300mg) with grade B evidence (promising human data, not yet comprehensive). At $6.39/day it's among the more expensive options in Cognition.

What drives the score up

  • Tested by independent lab (transparency 8.0).
  • Community score of 9.0 with positive consumer feedback.

What drags it down

  • Dose-evidence score of 4.5 is below average for the site.
  • Overall dose is only 42% of the trial dose across ingredients.
  • Ashwagandha (125.0mg is 21% of the 600mg trial dose) is significantly under-dosed.
  • No public lab certificate available for independent verification.
  • At $6.39/day it's on the expensive side.

Why you'd choose it

  • You want Ashwagandha from a Life Extension product.
  • You want a tested by independent lab product.

Why you might skip it

  • You want a product with a publicly available CoA.
  • You need a full trial dose of ashwagandha (this product under-doses it).
  • You want a cheaper option (this is $6.39/day).
Question 1

Does the molecule work?

The science behind each active ingredient, independent of which brand sells it.

Ashwagandha

The best-studied adaptogen for stress and sleep.

2 landmark RCTs · US: Dietary supplement · EU: Food supplement (novel status in some countries)
Question 2

Is this bottle good?

The specific product: dose, price, transparency, and what buyers report.

Dose vs research
42% of trial dose
Well below the trial dose
Cost at trial dose
$6.39/day at trial dose
What one effective daily dose actually costs
Transparency
8.0/10 · No public lab certificate
Independent batch testing confirmed
Consumer signals
741 reviews across platforms · 4.5/5 · high confidence
Operational signal only, never used as clinical evidence
Question 3

What's the catch?

Safety flags, transparency gaps, dosing concerns, and recurring buyer complaints.

!
Review advised
ashwagandha: thyroid medication interaction
Safety flag
ashwagandha: thyroid medication interaction
Dose or interaction risk detected. See ingredient page for details.
No public lab certificate
Certificate of Analysis not published
Without a public lab certificate, batch purity and potency cannot be independently verified.
Underdosed
Dose at 42% of trial dose
Below 50% of the dose used in published clinical trials.
Buyer complaints
Trustpilot: slower response to some negative reviews; Amazon: some doubt on pregnenolone dosing accuracy
Recurring themes from consumer review platforms.
Plain English

What’s inside

The main ingredients of this product, in plain language.

Ashwagandha125 mgEvidence B

The best-studied adaptogen for stress and sleep.

Read about Ashwagandha →
Layer 3 · Evidence vault

Product data & verification

Hard numbers and independently checked status. Expand each block for its source.

The numbers

Price
$40
per bottle · 30 servings
Dose vs. research
Below trial dose 42%
of published effective dose
$ / day at studied dose
$6.39
what one effective daily dose costs
$ / g active
$10.65
per gram of active substance
Independently checked

Data verification

COA status
Not public
Evidence grade
B
Per-ingredient breakdown
BAshwagandha

All product data is checked against original sources. Prices, doses, and testing status are updated when product pages change. Evidence grades are reviewed when new human RCTs are published. Read how we verify.

What's inside

Ingredient
Dose in this product
Trial dose
Evidence
125 mg 21% of trial dose
600 mg
4.5 /5
High confidence Strong value signal
741 reviews across 4 platforms (4 sources)
Source diversity: 92%
AmazonRedditTrustpilotiHerb
Praisehigh quality/trustworthy productseffective formulations
Complaintsslower response to some negative reviewssome doubt on pregnenolone dosing accuracy
Last checked: 2026-08-20

Consumer signals

4.53 out of 5 across 741 verified reviews on 4 platforms.

High confidence

Consumer sentiment compiled from 4 public sources.

Trustpilot

431 reviews · 4.4/5 · positive sentiment

Praisehigh quality/trustworthy productseffective formulations
Complaintsslower response to some negative reviews
Themes

Life Extension holds an 'Excellent' 4.4/5 Trustpilot rating from several hundred reviews, with customers consistently citing product quality and trustworthiness.

Compiled from Trustpilot listing located during research; verified at build time.

Amazon

positive sentiment

Praiseimproved focus and memorynoticeable cognitive effects
Complaintssome doubt on pregnenolone dosing accuracy
Themes

Amazon reviewers like Cognitex Elite Pregnenolone for perceived memory and focus benefits, though a minority question exact dosing potency.

Compiled from Amazon listing located during research; verified at build time.

iHerb

310 reviews · 4.7/5 · positive sentiment

Praiseimproved cognitive function and moodbetter sleep reported
Complaintshigher price point
Themes

iHerb customers rate Cognitex Elite Pregnenolone 4.7/5 across 310 ratings, frequently reporting noticeable cognitive and mood benefits within weeks.

Compiled from iHerb listing located during research; verified at build time.

Reddit

2 threads discussed · mixed sentiment

Praisesome report improved mood and mental clarity
Complaintshormonal side-effect concerns for some users
Themes

Nootropics Reddit discussions on pregnenolone are mixed, balancing reports of improved mental clarity against concerns over hormonal side effects.

Compiled from Reddit listing located during research; verified at build time.

These are consumer sentiment signals. They do not measure whether the product actually works. See our evidence section for that.

What others say (unverified)

No external reviews aggregated yet for this product.

Layer 3 · Evidence vault

Evidence, claims & regulation

Published evidence, claim checks, regulatory status and what could not be verified.

Evidence

Research behind this product

The studies that established the trial dose and evidence grade for each active ingredient in this product. Click through to read the original paper.

AshwagandhaChandrasekhar et al. 2012
AshwagandhaGopukumar et al. 2021 (cognition in stressed adults)
Important to know
AshwagandhaNot for pregnancy, hyperthyroidism, or with sedatives. Effects on TSH can complicate thyroid conditions.

Editorial notes

The flagship, most complex Cognitex SKU, combines sage, blueberry, ashwagandha, phosphatidylserine, pregnenolone, UMP, and vinpocetine in one tablet; broad-spectrum nootropic approach with individually-studied components, though the pregnenolone inclusion (a hormone precursor) is worth flagging for anyone sensitive to hormonal supplements or in jurisdictions where it's restricted.

Go deeper

Where this sits

Actives inside
Ashwagandha
Category
See all in Cognition →
Brand
Life Extension profile →
Add to compare Visit brand site →
Brand owners

Spot an error?

If you are the manufacturer or brand owner of Cognitex Elite Pregnenolone and believe any data on this page is incorrect (wrong dose, wrong ingredient, wrong price, missing certification, outdated status), you can request a correction.

We review every request, verify it against primary sources, and publish any accepted change with a dated note. Corrections from brand owners are treated the same as corrections from anyone else: verified before they move.

Request a correction →
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