Best Mushroom Coffee According to RDs (2024)

Four Sigmatic Mushroom Coffee was one of the OG’s of mushroom coffee. It’s known for its clean ingredients, including a blend of organic fair-trade Arabica coffee, organic chaga, and organic lion’s mane mushrooms. This blend received an average 4.4 out of 5 rating in nearly 17,860 Amazon reviews.

Like other mushroom coffees, Four Sigmatic is expensive, at $1.49 per ounce (oz), although it may be cheaper through a subscription program. It’s available from a variety of vendors on Amazon. The coffee has a few health claims such as “focus and immune support,” which have not been tested for accuracy. There are few human studies of mushroom coffee.

Four Sigmatic also offers instant coffee for a convenient way to enjoy your morning cup of joe. This product received a 4.3 out of 5.0 in more than 16,450 Amazon ratings. Four Sigmatic is a small business and has itself received several positive online reviews. Some of the reviewers noted that it relieved their gut issues and gave them a "boost of energy without the crash at the end.” Others mentioned the smooth taste and health benefits as a “perk” of Four Sigmatic Coffee. One reviewer stated he had: “more energy, stamina, and less coffee crash.”

I received free samples of Four Sigmatic Think dark roast coffee. I enjoyed the aroma andflavor of the coffee; it has chocolate undertones and isn’t bitter for a dark blend. Whilethis brew has half the caffeine of traditional coffee (50 milligrams [mg] versus 100 mg), it did perk meup and gave me more focus without any anxiousness. In addition, I convinced mymushroom-hating, coffee snob husband to try it. He liked it!

What Experts Say About Four Sigmatic

Jenna Volpe, RD, a clinical herbalist and the owner of Holistic Healing Services & Resources chose Four Sigmatic for several reasons. “I love the taste of Four Sigmatic mushroom coffee. It’s smooth and bold, and it tastes just like a great cup of regular coffee to me,” says Volpe. “Aside from the initial jolt of energy from caffeine that comes with drinking regular coffee, I find the energy I get from functional mushroom coffee to be more sustained.”

She also notes, “From a health and wellness standpoint, I love that Four Sigmatic uses organic coffee beans, real adaptogenic mushrooms (some of which are wildcrafted), and that they test their products for potency as well as to ensure low levels of pesticide residues, mycotoxins, and heavy metals.”

Barbara Ruhs, RDN, a food marketing nutritionist at Market RD, also enjoys Four Sigmatic mushroom coffee. “I love the taste of coffee and don’t think it interrupts my sleep, but the goal is to try to reduce caffeine after my morning big cup. I got hooked after finding a free sample packet that I had picked up at Natural Products Expo West (trade show) a few years ago when it was just hitting the shelves.”

In addition, Katie Schimmelpfenning, RD, the founder of Eat Swim Win, chose Four Sigmatic Mushroom Coffee as her favorite. She noted, “I enjoy the earthy taste of Four Sigmatic mushroom coffee. I also noticed that [this] coffee seems to be less acidic, which can be helpful for coffee lovers with acid reflux. However, Four Sigmatic mushroom coffee is much more expensive than regular coffee.”

Four Sigmatic instant coffee is packed with lion’s mane and chaga mushrooms.Research done on animals has supported that lion’s mane has positive effects on memoryand learning; however, more continued research is needed to support the cognitive benefits of lion’s mane in humans.