Erbology discloses more overall — based on ingredient quality, transparency, value, and trust signals.
Higher overall score
0.0
/10Well Documented
Good disclosure with minor gaps.
This score reflects disclosure completeness — not a verdict on product quality.
Scored: November 2026
0.0
/10Limited Disclosure
Key information such as beta-glucan content is not publicly available.
This score reflects disclosure completeness — not a verdict on product quality.
Scored: May 2026
Score breakdown by dimension
| Erbology | Dimension | Four Sigmatic |
|---|---|---|
8.3▲ | Ingredient Quality35% | 5.8 |
4.4▲ | Transparency30% | 3.3 |
9.5▲ | Value20% | 2.0 |
7.0▲ | Trust10% | 3.0 |
8.0▲ | Consumer Experience5% | 7.0 |
Key facts
| Erbology | Fact | Four Sigmatic |
|---|---|---|
| unspecified | Extraction method | water_extract |
| fruiting_body | Mushroom source | fruiting_body |
| 48% | Beta-glucan % | — |
| Not disclosed | Beta-glucan verified | Not disclosed |
| Not disclosed | COA available | Not disclosed |
| Yes | Organic certified | Yes |
| 4.6 (1362 reviews) | Trustpilot score | 4.4 (200 reviews) |
| £0.52 | Price per serving | £1.50 |
Erbology vs Four Sigmatic: questions answered
Which discloses more, Erbology or Four Sigmatic?+
Erbology scores 7.24/10 and Four Sigmatic scores 3.92/10 on the Cogniscore disclosure rating. Erbology discloses more overall. The rating reflects what each brand publishes about ingredient sourcing, beta-glucan content, extraction method, dose adequacy and third-party testing. It is not a verdict on product quality or safety.
How are the Erbology and Four Sigmatic scores calculated?+
Cogniscore rates supplements across five dimensions: ingredient quality (35%), transparency (30%), value for money (20%), trust and third-party testing (10%), and consumer experience (5%). Every score comes from publicly available information, applying the rules in the published methodology. A score measures how much a brand discloses, not whether a product works.
Are Erbology and Four Sigmatic the same type of product?+
Both are scored in the Pure Mushroom Powder category, which is why they are compared side by side. Cogniscore only compares products within a category, so the dimensions mean the same thing for each.