Is Four Sigmatic Mushroom Coffee Good? Think (Lion's Mane) Reviewed
In one line
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.
- Price
- $18.99 / 10 servings
- Per serving
- $1.90
- Caffeine
- 50 mg
- Mushrooms
- 2 species · 500 mg
- Part used
- fruiting body
- Beta-glucans disclosed
- No
- 3rd-party tested
- Yes
- Format
- instant, ground, pods
What this page covers
- The Think (lion's mane + chaga) instant packets
- Label disclosure compared to the research doses
- Cost per serving across instant, ground and pods
What it does not cover
- Four Sigmatic's non-coffee products (cacao, protein, elixirs)
Four Sigmatic
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.
$18.99 · $1.90/serving · 50 mg caffeine
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What's on the label vs. what the research used
| Mushroom | Label dose / serving | Part used | Dose in named human studies |
|---|---|---|---|
| Lion's Mane | 250 mg | fruiting body | 1,000–3,000 mg/day |
| Chaga | 250 mg | fruiting body | No completed human RCTs |
The label is the product
Four Sigmatic is the only large brand whose label reads like a supplement facts panel: species, amount, part used. That alone earns it the transparency score. Whether 250 mg is "enough" is a different question — see the table above — but at least you know.
Taste
Real coffee. The chaga adds a faint vanilla-earth note; the lion's mane is invisible. Of the instant blends we tested, only RYZE tastes smoother, and RYZE gets there with added MCT and coconut.
Value
$18.99 for ten packets is the highest per-cup price among the big three. The 12 oz ground bag brings it down considerably if you don't need single-serve.
Verdict
The transparency pick. Pay the premium if you want to know exactly what you're drinking.
Four Sigmatic
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.
$18.99 · $1.90/serving · 50 mg caffeine
We may earn a commission, at no cost to you.
Frequently asked questions
How much lion's mane is in Four Sigmatic coffee?
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.
How much caffeine is in Four Sigmatic mushroom coffee?
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.
Is Four Sigmatic worth the price?
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.
Does Four Sigmatic use fruiting body or mycelium?
Fruiting body, and it says so on the label. Four Sigmatic also describes its extraction method, which most competitors leave out.
Sources
- Four Sigmatic Think Organic Coffee product page — Per-serving lion's mane and chaga amounts, fruiting-body claim, price and pack size
- Mori K et al. (2009) Hericium erinaceus and mild cognitive impairment — 3,000 mg/day comparison dose