Product review

Four Sigmatic Original Mushroom Coffee (30 servings) review, scored

Item: Four Sigmatic Original Mushroom Coffee (30 servings)
Rating: 5.81

Established five-mushroom instant coffee; refund wording is inconsistent.

Health Corners editorial team · Claims checked against seller pages · Updated Nov 14, 2026

Original Mushroom Coffee (30 servings) — Product photo from Four Sigmatic

#11 of 17 products in Healthy Foods & Snacks

Calculated from published specs and owner feedback

See all healthy foods & snacks

Overall 5.8
Social 6.8
Usability 4.8

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$50.00

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How we review

Up next in Healthy Foods & Snacks

All Four Sigmatic products Best Mushroom Coffee

Strengths and drawbacks

Published specs and owner feedback, not a hands-on test.

Strengths

Five-mushroom organic instant blend with 30 servings
Trial packs and retail shelves let buyers try before a bag
First subscription order priced at $35

Drawbacks

Refund window and opened-item rule differ between pages
Subscription is pushed as the lowest price
Amazon rating for this bag is 3.9

How the score breaks down

Published features and owner comments · not a lab test.

Overall5.8
Social6.8
Usability4.8

Usability4.8/10

Label transparency5.0/10

Testing and sourcing5.0/10

Taste and prep5.0/10

Price per serving and billing4.0/10

Support and owner reports5.0/10

Social6.8/10

Marketplace reviews7.8/10

Independent web and YouTube7.0/10

Reddit5.5/10

How each score was set

Usability 4.8 /10

From published features and owner comments · not a lab test.

Label transparency5.0/10: Servings and a five-mushroom list are published; allergen and origin lines were not read for this reformulated bag.
Testing and sourcing5.0/10: USDA Organic and third-party batch testing are stated in listing copy; the lab is not named in the text read.
Taste and prep5.0/10: Instant mix, a starter kit and 10-packet trial packs exist; shelf life and storage lines were not read.
Price per serving and billing4.0/10: $1.66 a serving one-time and a deep first-order discount; the 60-day promise conflicts with a refund page that bars opened items.
Support and owner reports5.0/10: Email support is named on the refund page and the brand is stocked at grocery retailers; Amazon ratings are mixed at 3.9 for this bag.

Social 6.8 /10

Average of the independent owner-review sources listed below.

Marketplace reviews7.8/10: Product · 216 reviews · amazon.com
Independent web and YouTube7.0/10: Brand-level · 2 reviews · tasteofhome.com
Reddit5.5/10: Brand-level · 2 reviews · reddit.com

Claims we checked

The published claim, then what we found. Live statuses. How we review

The claim

60-day money-back guarantee

What we found

Contradicted

The refund page says contact first, a 45-day window, and no returns of opened food or supplements.

Source · checked Nov 14, 2026

The claim

The #1 mushroom coffee, with over 100,000 five-star reviews

What we found

Fine print

Brand wording from its own page; Amazon shows 3.9 on about 216 ratings for the 30-serving bag.

Source · checked Nov 14, 2026

The claim

Benefits for focus, energy, stress relief and gut health

What we found

Fine print

The brand's statements; its product copy carries the standard FDA disclaimer and no trial for this blend was found.

Source · checked Nov 14, 2026

We tried it

A coupon-code check on Fun Coupons, our partner coupon site. Not a product test.

Code tried by code-check on Nov 5, 2026: worked, 15% off.

Get it at Fun Coupons

Code shown on our partner site Fun Coupons. We may earn a commission.

Verified saving

15% off Four Sigmatic

Checked Nov 5, 2026Code checked by our checker

Get it at Fun Coupons

How we verify

Fun Coupons checked this offer on Nov 5, 2026 (code checked by our checker). We show a saving only when its amount is stored and it was checked in the last 30 days. We never show the code here.

The code is shown on Fun Coupons, our partner site with this store’s verified offer. We may earn a commission.