# Four Sigmatic Mushroom Coffee — review data

Source: https://mushroomcoffeelab.com/reviews/four-sigmatic/
Last updated: 2026-08-28

## Verdict
Four Sigmatic mushroom coffee (Think) is the most transparent mushroom coffee on the market: 250 mg lion's mane and 250 mg chaga fruiting-body extract, disclosed per cup, with 50 mg caffeine and third-party testing. The trade-off is price, at a premium $1.90 per serving for the instant packets, and only two mushrooms, with no cordyceps in the Think line.
Overall score: 3.8/5 (taste 4, ingredients 4.5, transparency 4.5, value 3, lab testing 4, dosage 3)

## Facts
- Brand website: https://us.foursigmatic.com/
- Price: $18.99 USD for 10 servings ($1.90 per serving)
- Caffeine per serving: 50 mg
- Formats: instant, ground, pods
- Beta-glucan content disclosed: no
- Third-party tested: yes
- Organic: yes

## Mushrooms per serving
- Lion's Mane: 250 mg, fruiting-body (human studies used 1,000–3,000 mg/day)
- Chaga: 250 mg, fruiting-body (human studies used No completed human RCTs)

## Pros
- Per-mushroom doses and 'fruiting body' stated on the label — the clearest disclosure in the category
- Organic, third-party tested, and available as ground, pods and instant
- Tastes like a proper medium-roast coffee; chaga is nearly undetectable

## Cons
- $1.90 per serving for the instant packets is at the top of the range
- 250 mg lion's mane is about 8% of the 3 g/day used in the Mori 2009 trial
- Only two mushrooms — no cordyceps in the Think line

## Skip it if
- You want the cheapest daily cup — RYZE costs about 35% less per serving
- You're after a multi-mushroom blend for 'immune' coverage

## FAQ
Q: How much lion's mane is in Four Sigmatic coffee?
A: The Think line states 250 mg of lion's mane fruiting-body extract per serving, plus 250 mg of chaga. That is more disclosure than most brands offer, though it is well below the 3,000 mg/day used in the main human cognition trial.

Q: How much caffeine is in Four Sigmatic mushroom coffee?
A: About 50 mg per instant packet — roughly half a regular cup. The ground coffee is closer to a normal cup because it's real ground arabica with mushroom extract added.

Q: Is Four Sigmatic worth the price?
A: If label transparency and fruiting-body sourcing matter to you, yes. If you just want a cheaper, smoother mushroom coffee for daily drinking, RYZE delivers most of the experience at 35% less per cup.

Q: Does Four Sigmatic use fruiting body or mycelium?
A: Fruiting body, and it says so on the label. Four Sigmatic also describes its extraction method, which most competitors leave out.