Best overall
Four Sigmatic
Focus Ground Coffee – Dark Roast (Lion's Mane & Chaga)
7.7Good
Organic dark-roast ground coffee with lion's mane and chaga extracts. It brews and tastes like regular coffee, with full caffeine.
4$1.54 / cup
New
Four Sigmatic
Protein Coffee (with Creatine, Collagen & Lion's Mane)
A 'proffee' powder: instant Arabica with 10 g protein, creatine, collagen and lion's mane in one scoop. Sweet, convenient and $3 a cup.
7.0
Fair
Coffee Reviews score
See the breakdown →
Community
—/10
- Roast
- Medium
- Format
- Powder mix
- Caffeine
- Regular
- Price per serving
- $3.00 / cup
- Caramel
- Cinnamon
- Coconut
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Last reviewed October 17, 2026 by the Coffee Reviews editors · How we score
A 'proffee' powder: instant Arabica with 10 g protein, creatine, collagen and lion's mane in one scoop. Sweet, convenient and $3 a cup.
Four Sigmatic Protein Coffee stacks organic instant Arabica (about 100 mg caffeine) with 10 g of protein from organic pea protein and grass-fed bovine collagen, creatine monohydrate and lion's mane extract, lightly sweetened with coconut sugar. The brand's page now lists 5 g of creatine and 3,000 mg of lion's mane (from a 6:1 extract), while Taste of Home's June 2026 review described 3 g of creatine, so the formula appears to have changed. Testers find it noticeably sweeter than plain coffee and convenient, but at $30 for 10 servings it costs far more than coffee plus protein powder.
Best for
- Morning exercisers who want coffee and creatine together
- People who already add protein powder to coffee
- Iced protein coffee on the go
What we like
- 10 g protein, creatine and lion's mane in one scoop
- No whey or dairy protein (pea protein plus collagen)
- Mixes into cold water for iced coffee
- About 100 mg caffeine, like a regular cup
Watch-outs
- $3.00 per serving one-off
- Sweeter than plain coffee (coconut sugar)
- Contains bovine collagen, so it isn't vegan
- The formula appears to have changed recently; check the label
Flavor profile
What it tastes like.
In the roaster’s words
“Smooth full-bodied medium roast coffee with notes of caramel and hint of cinnamon”
- Caramel
- Cinnamon
- Coconut
- acidity
- body
- sweetness
- bitterness
LightMediumDark
How it scored
The breakdown.
7.0Fair
Cup score out of 10, weighted across five factors.
- Flavor & cup quality30%7.6
Taste of Home's tester found the flavor grew on her, with cinnamon and coconut notes, but it is clearly sweeter than plain coffee.
- Quality & freshness20%7.7
Uses real doses of creatine and protein and a disclosed lion's mane amount from fruiting bodies, with no whey.
- Value20%5.4
$3 per cup one-off is steep next to instant coffee plus a scoop of protein and creatine.
- Sourcing & transparency15%6.8
Fruiting-body lion's mane and organic Arabica are named, but there is no origin detail and only a generic 'Tested For Toxins' badge.
- Community love15%6.9
A new and recently reformulated product with a positive Taste of Home review; little other independent coverage yet.
What people are saying
From the forums.
Verbatim from Reddit, forums and long-term owner write-ups — linked so you can read the full thread.
“Right off the bat, the powder had a pleasant aroma with hints of cinnamon and coconut. I’ll admit I wasn’t sure how I felt about the initial sip, but the flavor quickly grew on me.”
“Taste-wise, expect something sweeter than your average cup of joe. Since I typically add plant milk to my coffee anyway, a splash of unsweetened soy milk mellowed out the sweetness and turned it into more of a latte. If you already use flavored coffee creamer or protein powder in your coffee, the sweeter flavor profile probably won’t feel that different.”
Details
The particulars.
- Species
- Arabica
- Format
- Powder mix
- Caffeine
- Regular · ~100 mg per serving
- Functional ingredients
- Pea protein + grass-fed collagen (10 g protein), Creatine monohydrate (5 g, current label), Lion's mane (3,000 mg from a 6:1 extract)
- Ingredients
- As described by the brand: organic Arabica instant coffee, organic pea protein, grass-fed bovine collagen peptides, creatine monohydrate (5 g), organic lion's mane extract (3,000 mg from a 6:1 extract), with a touch of coconut sugar.
- Nutrition (per serving)
- serving size: 1 scoop · protein g: 10 · creatine g: 5 · caffeine mg: around 100
- Best brewed as
- Just add water, Iced / over ice, Lattes & milk drinks
- Typical price
- $30.00 for 10 servings (checked October 2026)
- Servings
- 10 servings per pack ($3.00 each one-off). Subscribe & save takes 30% off the first order and 20% off repeats.
Community
Member tasting notes & discussion.
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Discussion
No discussions yet.
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FAQ
Good questions.
How much creatine is in Four Sigmatic Protein Coffee?
Four Sigmatic's product page currently lists 5 g of creatine monohydrate per serving. Taste of Home's June 2026 review described 3 g, so check the label on the bag you buy.
How much caffeine does it have?
The brand says around 100 mg per serving, similar to a regular cup of coffee.
Is it vegan?
No. Protein comes from organic pea protein plus grass-fed bovine collagen peptides, so it isn't plant-only, though it contains no whey or dairy.
Can I make it iced?
Yes. The brand suggests mixing it with a splash of warm water first and then pouring over ice, and Taste of Home's tester found it mixed well even in cold water.
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