You ran the math. Here is the receipt.
You’re looking for the functional coffee with the best taste and highest potency - you’ve come to the right place. But how does Rainbo’s Fungki Coffee compare to the top competitors? We put Fungki Coffee next to the top mushroom coffee products, same serving size, brands anonymized. Here is what the numbers say:
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Competitors anonymized by dose. Competitor 1 includes myceliated grain: per that brand's own label, the mushrooms are grown on grain, and the grain is counted in the listed weight. Fungki Coffee is made with 100% organic fruiting body mushrooms.
As Seen In
Same cup. Four very different doses.
Fungki Coffee has the most mushrooms, and the cheapest cost per gram: $0.53/g - - $0.40/g on subscription
$48 for 30 servings. 3,000mg of organic fruiting body mushroom per cup. That works out to 53 cents a gram: the highest dose and the lowest price per gram on the chart.
On subscription, it drops to $1.20 per cup, or $0.40 per gram or organic fruiting body mushrooms, plus free shipping.
And here is what the per-cup price hides. By the gram, the nearest competitor is $0.76 - but they include myceliated grain filler. The rest of the category runs $0.99, $1.04, up to $2.90. One even looks cheap at $0.62 a cup, until you do the math: that is $1.04 a gram, with barely any mushrooms, and cost double what Fungki costs. Fungki is $0.53/g; $0.40/g on subscription. More mushrooms, less money.
The smartest cup is the one that restocks itself.
When it comes to adaptogens, you get the best results with consistent use. Subscribe, and every bag is 25% off with free shipping, delivered on your schedule. That is 40 cents per gram of organic fruiting body functional mushrooms, the lowest price Fungki ever costs. Skip, pause, or cancel anytime, no strings.
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Why Is This Important?
You get the best results from consistent, high doses.
With functional mushrooms, dose and consistency get results. A sprinkle does not move the needle. Real amounts, taken daily, do. The adaptogenic mushrooms in Fungki Coffee - Lion's Mane and Reishi, are the most effective with consistent use. Here are two trials with female subjects who experienced significant benefits from taking these adaptogens regularly at high doses.
1. Lion's Mane · the focus study:
Fungki Coffee delivers 1,500mg of Lion's Mane per cup.
Adults aged 50 to 80 took 3,000mg of Lion's Mane every day for 16 weeks. Their cognitive scores climbed week over week, then slipped back once they stopped. The benefit tracked the dose.
Go deeper: Mori et al., 2009 · Phytotherapy Research
2. Reishi · the stress and mood study:
Fungki Coffee delivers 1,000mg of Reishi per cup.
Two groups of college-aged women took 500 mg and 1,000mg of Reishi daily for 30 days and improved across stress, mood, and overall well-being, with fitness gains alongside.
Go deeper: Mitra et al., 2024 · International Journal of Medicinal Mushrooms
3. Cordyceps · the energy and stamina study
Fungki delivers 1,000mg of Cordyceps per cup: the exact dose used in this trial.
In a 12-week double-blind study, healthy adults who took Cordyceps daily raised the point at which their bodies tire, holding a higher, steadier output before fatigue set in. The effect built over the full 12 weeks, exactly the kind of consistent gain Cordyceps is known for.
Go deeper: Chen et al., 2010 · Journal of Alternative and Complementary Medicine
Both results showed up at full, consistent doses. That is exactly why we put 3,000mg of organic fruiting body mushroom extracts in every cup: 1,500mg of Lions Mane and 1,500mg of Reishi. With Fun gki Coffee you get the lowest price per gram of adaptogenic mushrooms in the category, and the best tasting functional coffee on the market.
Start your Fungki Coffee ritual todayRainbo’s Fungki Coffee vs. the biggest competitor on the chart
Some brands grow their mushrooms on grain, then count the grain in the dose. Per these brand's own label, the listed weight is mycelium grown on grain, not pure mushrooms. The compounds worth paying for, like hericenones and triterpenoids, are concentrated in the fruiting body, not the grain substrate.
Fungki Coffee has 100% organic fruiting body, dual-extracted mushrooms, with verified beta-glucans on every batch. The most potent coffee alternative on the market
Best value: Subscribe for 25% off + free shipping. Cancel anytime.
SATISFACTION GUARANTEE
What Fungki Coffee’s 3,000 milligrams is:
Organic Lion's Mane
1,500mg · Fruiting Body
Keeps your mind clear and your focus sharp. Lion's Mane supports your brain's ability to repair and maintain its own cells, so you stay switched on through the day.
Reishi
1,500mg · Fruiting Body Extract
Calms the system. Reishi helps your body settle and stay steady when the day starts piling up.
Siberian Ginseng
900mg · Organic
Steadies your energy. It works with your body's stress response so you hold a level output across the day instead of spiking and crashing.
Cold Brew Coffee
44mg Caffeine · Low-Acid
Real coffee, bold and smooth, with about half the caffeine of a regular cup. Enough for a clean lift, gentle enough to skip the jitters, and low-acid so it is easier on your stomach.
Pink Himalayan Salt
57mg
Better hydration. A pinch of sodium helps your body actually hold onto the water you drink.
What People Are Saying…
I've been looking for this
"I swapped my afternoon coffee for this. Steadier focus, none of the wired feeling."
Haleigh R.
Verified Buyer
Best tasting by far!
"Caffeine-free, but I am not dragging at 3pm anymore. Roasty and a little caramel taste - its a functional treat."
Jarret C.
Verified Buyer
Simply the best !!!
This is absolutely the best stuff ever!!! I have tried other types of mushrooms. However I keep coming back to Rainbo.
Denise R.
Verified Buyer
Love Love Loveee
So happy to have added this to my daily routine. Really great for my energy levels throughout the day and it has helped me maintain my nervous system regulation :) Love!
Bisma M.
Verified Buyer
Simply the best !!!
"I expected it to taste like dirt. It tastes like actual good coffee."
Denise R.
Verified Buyer
Love Love Loveee
"No 2pm crash, no jittery feeling, just steady all day."
Bisma M.
Verified Buyer
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A daily ritual with a dose that actually has an impact, at a price per gram no competitors can beat, and 25% off when it restocks itself. You already saw the math. Taste and feel the difference.
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Vegan
Non GMO
B-Corp Certified
Climate Neutral
Fruiting Body Mushroom
Made in Canada
100% Traceable
Third Party Tested