Mushroom Coffee

Independent reviews and lab-tested rankings of mushroom coffee brands. We score on mushroom quality, testing transparency, formulation purity, and trust — not taste.

We buy every product ourselves. Lab-tested and blind-studied. Our methodology

Product Reviews

Latest Review

RYZE

RYZE Mushroom Coffee

RYZE is the best-selling mushroom coffee brand in America. It also has the most regulatory red flags of any brand we evaluated: a NAD-forced claim withdrawal, a Prop 65 lead settlement, 859 BBB complaints, and an active class action lawsuit. We break down every issue.

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Guides & Research

In-Depth Guides

📖 Guide

Fruiting Body or Mycelium-on-Grain? Why Most 'Mushroom' Coffee Is Mostly Rice

A 2017 USP study found only 26% of reishi supplements were verified as actual reishi. The rest were mostly grain. Here is how to tell the difference between mushrooms and rice flour.

Apr 11, 2026

🔬 Research

Does Your Mushroom Coffee Contain Lead? Three Brands Have Been Caught

Mushrooms bioaccumulate heavy metals. Two of the biggest mushroom coffee brands in America have settled or been caught in Prop 65 lead enforcement — and the biggest publishes no testing data at all.

Apr 11, 2026

🔬 Research

How Much Mushroom Is Actually In Your Mushroom Coffee?

Most mushroom coffee delivers a fraction of the dose used in clinical studies. Here is the math, the proprietary blend trick, and how to read a label so you do not get fooled.

Apr 11, 2026

🔬 Research

RYZE Mushroom Coffee: NAD Investigation, Lead Settlement, and 859 BBB Complaints

RYZE is the best-selling mushroom coffee in America. It is also the most regulated, the most sued, and the most complained-about. Every claim in this article links to a public regulatory filing or court doc.

Apr 11, 2026

More Brands Tested

31 more mushroom coffee brands we’ve evaluated

Shorter evaluations of additional brands we tested but didn’t include in the main review set.