Nootropics Depot Lion's Mane 8:1

Verdict

The transparency benchmark of the category: 8:1 dual-extract from whole fruiting body, batch-level COAs, and a cGMP and FDA-registered manufacturing chain. The price premium is real but earned, and this is the listing serious buyers default to.

Best for: Readers who want lab-style transparency from a smaller specialist.

Score breakdown

Each axis is scored 0 to 10. The overall NootroScore weights potency 40%, purity 25%, value 20%, and transparency 15%. See the full methodology.

Potency Beta-glucan content as disclosed on each brand's published Certificate of Analysis, weighed against the label claim.

9/10

Purity Heavy-metals and microbial test results, where the brand publishes a per-batch COA, evaluated against USP-grade thresholds.

9/10

Value Cost per active milligram of beta-glucan, normalized across formats.

8/10

Transparency Sourcing disclosure, public certificate-of-analysis access, and label accuracy.

9/10

What we liked

• + 8:1 dual extract (water and ethanol) standardized to capture both polysaccharides and triterpenoid hericenones / erinacines
• + Whole fruiting body sourcing, with the brand explicitly rejecting mycelium-on-grain
• + Every batch tested in-house and again by ISO/IEC accredited third-party labs, with public Certificates of Analysis
• + Manufactured in cGMP-certified, FDA-registered USA facilities
• + Transparent dose: 500 mg per capsule, available in 60-cap and 180-cap SKUs across DTC and Amazon

Where it falls short

• − Higher price tier than most Amazon-native Lion's Mane brands
• − Beta-glucan percentage not numerically disclosed on the product page, only the qualitative '8:1 dual extract' claim
• − Supplement-focused catalog cannot be bundled with broader grocery or household Amazon orders
• − Primary marketing surface is the DTC site at nootropicsdepot.com; the Amazon listing exists but the brand's own channel is where COAs and batch data live
• − Frequent reformulation cadence means buyers should re-check the active batch COA rather than rely on a static spec sheet

At a glance

Extract

8:1 extract

Beta-glucan content

20%

Serving

2 capsules daily

Servings per bottle

60

Third-party tested

Yes

Vegan

Yes