Does Mushroom Coffee Have Caffeine?

Yes, mushroom coffee has caffeine, and the reason is more boring than most people expect: it is coffee. The mushrooms contribute none of it.

This turns out to be the single most reliable thing about the category. Of all the claims made for mushroom coffee, reduced caffeine is the one with an unambiguous mechanism, a published number from most brands, and no dependence on any assumption about fungi.

No mushroom contains caffeine

Worth stating flatly, because a surprising number of people assume the mushrooms are the stimulant.

Caffeine is produced by a fairly small set of plants as a natural insecticide: coffee, tea, cacao, guayusa, yerba mate, guarana, kola. No fungus in commercial use makes it. Not lion's mane, not reishi, not chaga, not cordyceps, not turkey tail, not maitake.

That is why chaga brewed on its own is a naturally caffeine-free drink, and why Finland was able to use chaga as a coffee substitute during wartime shortages. If you drink a caffeine-free mushroom beverage and feel more alert, that is not caffeine, and it is not necessarily nothing either, but it is not pharmacologically the same thing.

Why the number lands lower

Pure substitution. A serving of mushroom coffee is part coffee and part mushroom powder, plus whatever else is in the blend. Less coffee in the cup, less caffeine in the cup.

Three things push the figure around:

The coffee-to-mushroom ratio. A blend that is mostly coffee with a few hundred milligrams of extract lands close to normal instant coffee. One with a gram or more of mushroom, cacao and MCT powder lands much lower.

The base. Some products use instant coffee, some use a coffee extract, and some products marketed as coffee alternatives use black tea instead, which drops caffeine substantially. Reading whether the product calls itself coffee or a coffee alternative is informative.

Deliberate dosing. Several brands reduce the caffeine on purpose, because "half the caffeine, none of the jitters" is the category's most effective marketing line and it happens to be true.

Published figures

Caffeine is the one specification brands in this category actually disclose, in contrast to form, per-species amounts and beta-glucan content, which mostly go unpublished. Credit where it is due.

RYZE publishes 48 mg per serving, a figure that appears on its own site^[4]. That is roughly half an 8 oz brewed coffee, which averages around 95 mg^[1].

Four Sigmatic publishes caffeine figures across its lines^[5], which vary by product since it sells both ground and instant coffee as well as lower-caffeine blends.

Across the brands that publish a number, the range runs roughly 45 to 75 mg per serving. If a product does not publish one, you cannot compare it to what you currently drink, and that absence should count against it.

One caution on third-party figures. While researching this we found a review site listing RYZE at "$1.20 per serving" when the company's own site showed $0.82 to $0.90. If roundups get a published price wrong, treat their caffeine figures with the same scepticism and go to the label.

How that compares to what you already drink

The practical read: a mushroom coffee is closer to a strong cup of tea or a single espresso than to a mug of filter coffee. For someone drinking two large coffees a day and feeling wired, switching is a genuine intervention. For someone drinking one small cup, the difference is modest.

Does it still affect sleep?

It can. This is where the marketing gets slightly ahead of the arithmetic.

Caffeine has a half-life of roughly five hours in most adults, meaning half of a 48 mg dose is still circulating five hours later. That is less than half of a regular coffee's load, but it is not zero, and caffeine sensitivity varies widely between people for genetic reasons.

If a mushroom coffee is helping you sleep better, reduced caffeine is the most parsimonious explanation, more so than any mushroom mechanism. Our reishi guide covers why the sleep claims attached to that species are weaker than their marketing suggests.

Daily limits worth knowing

For context on where any of these figures sit:

The FDA cites 400 mg per day as an amount not generally associated with negative effects in healthy adults^[2]. Health Canada gives the same figure for adults and advises no more than 300 mg per day during pregnancy^[3], with several obstetric bodies advising 200 mg.

A 48 mg serving sits comfortably inside all of those, which is one of the few places mushroom coffee has a concrete, evidence-backed advantage over a standard cup. The mushroom questions in pregnancy are a separate matter and are covered in our side effects guide.

If you want less caffeine still

Three routes, in descending order of caffeine:

1. A standard mushroom coffee, 45 to 75 mg. Roughly half a cup of coffee.
2. A decaf mushroom coffee, typically a few milligrams. Several brands make one.
3. A caffeine-free mushroom drink with no coffee or tea base at all, usually built on chaga, cacao or chicory. These are a different product rather than a weaker version of the same one, and they taste like it.

The short version

Mushroom coffee has caffeine because it has coffee in it. The mushrooms contribute none. Typical servings land between 45 and 75 mg against about 95 mg for an 8 oz brewed cup, RYZE publishes 48 mg, and the mechanism is that there is simply less coffee in the serving.

Of every claim in this category, this is the one that survives scrutiny intact. If reduced caffeine is why you are considering mushroom coffee, it will do what it says.