Four Sigmatic Review 2025: Is It Worth the Hype?

Ever wondered if mushroom coffee is just another wellness fad with clever packaging?

A few months ago, I wrote about the best mushroom coffee brands, breaking down different options and what they bring to the table.

However, one brand that completely surprised me from the very first sip was Four Sigmatic. Smooth. Their coffee is mellow, and without the dreaded coffee jitters. It instantly made me rethink what a “healthy cup of coffee” could actually taste like.

The problem is, not every mushroom coffee brand delivers on both flavor and benefits. Some are gritty, some taste too earthy, and others don’t feel much different than your regular brew. That’s where Four Sigmatic stands out and why so many people keep coming back to it.

In this Four Sigmatic Review, you’ll discover: what makes it unique, the key ingredients, real benefits and downsides, how it tastes, cost, and even a few alternatives worth considering. By the end, you’ll know if this brand is worth it.

What Is Four Sigmatic?

The brand started in Finland, where coffee culture is huge, and has since grown into a global company. They blend high-quality organic coffee with adaptogenic mushrooms, such as:

• Lion’s mane for focus
• Chaga for antioxidants
• Reishi for stress balance
• Cordyceps for energy.

They’ve built a full product line beyond just coffee, too. You’ll find instant packets for busy mornings, ground blends you can brew in a French press, creamy mushroom lattes, even protein powders and superfood blends.

All their products are USDA organic, non-GMO, gluten-free, and third-party tested for purity (including mold and mycotoxins). That’s a big deal, because when you’re dealing with mushrooms, you really don’t want shortcuts.

Why Did It Become Popular?

I noticed, and after also reading about other people’s experiences, that their coffee tastes smooth and mild without the funky “mushroom” aftertaste.

Even if you hate mushrooms, you’ll be surprised that the coffee tastes like a nutty dark roast rather than fungi. That alone has won over thousands of skeptics.

What do you feel?

The other hook is how these blends make people feel. Many, myself included, notice steady focus without the jitters, a calmer kind of energy, and even gut-friendly benefits.

If you stick with it for a few weeks, you might start seeing sharper concentration, less stress, and maybe even better sleep.

I dug in further, and it’s not simply my experience, others report less brain fog, smoother mornings, and no caffeine crash.

Eco friendliness

They also have fun names like ‘Think’ and ‘Balance,’ bundles that let you try different functional blends, and a clear commitment to transparency.

Plus, Four Sigmatic only uses fruiting bodies (not filler mycelium), tests for purity, and even runs its own ‘Mushroom Academy’ to educate customers. That’s how they turned an unusual idea into something approachable, tasty, and trustworthy.

Four Sigmatic Mushroom Coffee Ingredients

I’ve tried enough “health” products that felt gimmicky, with mystery fillers or mycelium instead of actual mushroom fruiting bodies.

However, Four Sigmatic takes the opposite approach. You can expect a clean, organic coffee mixed with functional mushrooms and adaptogens that are tested for purity and potency.

So, here’s a quick breakdown of what you’re actually sipping when you brew their coffee:.

Ingredient	Why It Matters	What It Does in the Cup
Organic Arabica Coffee	Single-origin beans from Honduras, grown at high altitudes. Smooth, low-acid, and fair-trade.	Gives that classic coffee taste without the harsh bite.
Lion’s Mane Mushroom	Known for hericenones and erinacines that support brain function. Used for centuries in traditional medicine.	Helps with focus, concentration, and reduced brain fog.
Chaga Mushroom	Nicknamed “The King of Mushrooms,” packed with antioxidants and immune-supporting compounds.	Adds a subtle earthy depth and fortifies your immune system.
Reishi Mushroom	An adaptogen often called the “mushroom of immortality.”	Supports stress balance and calm energy—great for afternoon cups.
Cordyceps Mushroom	Traditionally used for stamina and vitality.	Boosts natural energy without the caffeine crash.
Other Additions	Depending on the blend: probiotics (gut health), ashwagandha (stress relief), or mucuna (mood support).	Adds targeted wellness perks beyond coffee and mushrooms.

Notes: Some brands that use cheaper mycelium, Four Sigmatic sticks to the mushroom fruiting bodies. The part richest in active compounds and backs it up with third-party testing for purity.

Four Sigmatic: Cost & Where to Buy

Four Sigmatic sits in that middle ground where it’s more expensive than your average bag of beans. However, cheaper than buying separate mushroom powders and mixing them yourself.

A single bag of ground mushroom coffee usually runs around $17–$20. This depends on whether you go with their Focus blend, probiotic option, or adaptogen mix.

Meanwhile, instant packets are priced a little higher per serving but give you grab-and-go convenience. And if you’re a fan of pods, they’ve even got eco-friendly Keurig-compatible options. Though those tend to come at a slight premium.

Where to find it?

You can find Four Sigmatic on Amazon and in specialty health food stores. Personally, I like buying from Amazon reviews (18,000+ and counting). This makes it easier for you to read other people experiences and rating.

Four Sigmatic Benefits & Downsides

When I first switched to Four Sigmatic, I was curious whether it would live up to all the hype.

On some days it really delivered. I mean a smooth focus, calmer mornings, and even fewer stomach issues compared to my usual brew.

On other days, I wondered if the price tag was worth it. Like most things in wellness, it’s a mixed bag. So here’s the quick breakdown:

Benefits	Downsides
Lower caffeine – about half the kick of regular coffee, so fewer jitters and no mid-afternoon crash.	Higher price point – usually $17–$20 per bag or box, more than your average coffee.
Enhanced focus & clarity – lion’s mane is the star here, and lots of people (myself included) report less brain fog.	Taste isn’t for everyone – while smooth, it’s milder than traditional coffee and has a subtle earthy note.
Immune support – chaga and reishi bring antioxidants and adaptogens that may help your system fight stress.	Still contains caffeine – sensitive drinkers can still feel anxious or sleepless.
Gut-friendly – some blends add probiotics, and overall it tends to feel easier on digestion than standard coffee.	Not suitable for everyone – especially if you have mushroom allergies, autoimmune conditions, or are on certain meds.

Note: everyone’s body chemistry is different. For this reason, the way to know is to try a small bag first and see how it feels for you.

Four Sigmatic Alternatives

If you’re shopping around, you’ve probably seen names like Ryze, MUD/WTR, or Laird Superfood pop up too.

Each one is slightly different, and depending on your taste, budget, or health goals, you might find one fits better than Four Sigmatic. So, here’s a brief look to each brand:

Ryze Mushroom Coffee

Ryze markets itself as “coffee, but better,” and that tagline makes sense. Each serving packs 2,000 mg of six adaptogenic mushrooms (lion’s mane, reishi, cordyceps, shiitake, turkey tail, and king trumpet).

That’s more variety than Four Sigmati. Plus it’s blended with MCT oil for a creamy texture and extra fuel for your brain.

I like the fact it’s USDA Organic, grown in the USA, and uses full-spectrum mushrooms (not simply mycelium). The flavor is mild and easy to drink. However, it leans more toward functional than “bold coffee.”

MUD/WTR

MUD/WTR is similar to a chai-inspired mushroom drink. The flavor is different: think cacao, cinnamon, turmeric, ginger, and cardamom with 2,240 mg of mushrooms (chaga, lion’s mane, reishi, cordyceps).

The caffeine is low (about 35 mg vs. 95 mg in coffee). For this reason, it’s popular with people trying to cut back but still wanting focus and energy. Now the downside is that it doesn’t dissolve easily in water. So you’ll need a frother or blender.

Laird Superfood Mushroom Coffee

Laird Superfood goes in the opposite direction. In other words, it’s all about strong, dark-roast flavor. Their Peruvian ground coffee is infused with chaga, lion’s mane, and cordyceps.

So you still get the functional mushroom benefits, but in a more traditional coffee style. I found it bolder than Four Sigmatic and closer to what coffee purists expect. If you’re someone who wants a legit cup of coffee but with extra adaptogenic perks, Laird might be the safer bet.

Who Should Try Four Sigmatic?

If you’re the kind of person who loves coffee but hates the crash, Four Sigmatic is worth a shot.

The blends are designed for focus, calm energy, and even gut support because of the mushrooms like lion’s mane, chaga, reishi, and cordyceps.

You’ll also find it a solid option if you’re trying to cut back on caffeine. However, you still want that morning ritual and you can choose from full, half, or zero-caffeine versions.

Students, professionals, welness enthusiasts

I’d say it’s good for students pulling long study sessions, busy professionals juggling deadlines, or wellness people who already value organic, functional foods.

Struggling with jitters, or stomatch problems?

And if you’re someone who struggles with regular coffee jitters or stomach upset, you may actually find Four Sigmatic easier to handle.

Of course, it’s pricier than your average bag of beans. For this reason, it makes the most sense if you view it like a daily supplement:

You’re paying for clean ingredients, fruiting-body mushrooms (not cheap mycelium), and third-party testing.

Last Thoughts

Now I’m curious: have you tried mushroom coffee before? Did you notice better focus, calmer mornings, or maybe no difference at all? Go below and drop your experience in the comments and with that… voilà!