Mushroom coffee caffeine: 44mg for a steady lift, or none at all
Most mushroom coffees carry 35 to 95mg of caffeine a serving, and a regular 8 oz coffee carries about 95mg. Fungki Coffee carries 44mg of low-acid caffeine for a steady lift with no jitters and no crash. Fungki carries none at all and still tastes like coffee, with 3,000mg of fruiting body mushrooms in every serving.
Choose your FungkiFungki, rated 4.9 by verified buyers. Fungki Coffee, rated 5.0. Made in Canada. Certified B Corporation.
What the right amount of caffeine feels like
- A steady lift, no jitters, no crash. Fungki Coffee's 44mg is enough to feel and not enough to rattle you. Reishi and Siberian ginseng sit beside it to keep the lift level through the morning.
- A clear head and sharper focus. Lion's Mane, 1,000mg a serving in both, supports the signalling your brain uses to stay switched on, caffeine or not.
- Energy with no caffeine at all. Cordyceps, 1,000mg a serving in Fungki, supports the energy your cells make rather than energy you borrow, which is why Fungki needs no caffeine.
- Calm and grounded, still sharp. Reishi, 1,000mg a serving in both, supports a balanced stress response. Customers call it grounded, not sleepy.
- The coffee ritual, kept. Both taste like coffee and dissolve with a stir. Pick the caffeine you want, keep the morning you look forward to.
Caffeine, serving by serving
A regular coffee, a typical mushroom coffee, and the two Rainbo blends, read from labels. No brand is named in the category column because the range is the point.
| Regular coffee, 8 oz | A typical mushroom coffee | Fungki Coffee | Fungki | |
|---|---|---|---|---|
| Caffeine a serving | About 95mg | 35 to 95mg, by brand | 44mg, low-acid | None |
| Coffee in it | Yes | Usually | Low-acid cold brew and decaf | No: roasted chicory root |
| Mushrooms a serving | None | Often not printed | 3,000mg, dried equivalent | 3,000mg, dried equivalent |
| Extract ratio printed | Not applicable | Rarely | 8:1 Lion's Mane, 16:1 Reishi | 8:1 Lion's Mane, 16:1 Reishi, 8:1 Cordyceps |
Rainbo figures are from the labels, the live product pages and the Health Canada licence record, read the day this page was written. The coffee figure is the US Department of Agriculture average. The category column comes from brand labels and pages read on 2026-09-03.
Why less caffeine feels steadier
Caffeine blocks the tired signal. It does not make energy.
Caffeine works by blocking adenosine, the signal that builds through the day and tells you that you are tired. The tiredness is still there; it just cannot get through, and when the caffeine wears off it arrives at once. That is the wired but tired afternoon. At 44mg, Fungki Coffee gives you a gentle lift instead of a full block, and the Reishi and Siberian ginseng beside it support a balanced stress response, so the lift arrives without the spike. Fungki skips the block entirely and leans on Cordyceps for stamina.
Choose Fungki Coffee
Does mushroom coffee have coffee in it?
Most do. A mushroom coffee is usually ground or instant coffee with mushroom extracts added, which is where its caffeine comes from. Fungki Coffee is real coffee: a low-acid cold brew blended with decaf, which is how it lands at 44mg and why it tastes like coffee, because it is coffee.
Fungki has no coffee in it at all. Its roasted, rich body comes from organic chicory root and mesquite, finished with vanilla and Ceylon cinnamon, and taste is what 77% of its reviews talk about. If you want the coffee taste and the morning ritual with zero caffeine, that is the one.
It gives me a gentle, steady boost without the full-throttle caffeine jitters.
Vicki P., verified review of Fungki Coffee on rainbo.com
Want a caffeine-free mushroom coffee? Choose Fungki.
Fungki Coffee is not decaf. It is a blend of low-acid cold brew and decaf, enough caffeine for the lift and not enough for the jitters. If you want none, Fungki is caffeine-free, made for the afternoon serving that never follows you to bed and the evening ritual after dinner. It also carries organic chicory root, a prebiotic fibre that feeds the gut while you drink it.
Fungki or Fungki Coffee?
Both carry 3,000mg of fruiting body mushrooms a serving. Both are made in Canada. Both come with the same 30-day satisfaction guarantee and 25% off with free shipping on subscription. The only question is how much caffeine you want: a steady 44mg, or none.
25% off
Zero caffeine, the whole ritual
Fungki. Caffeine-free, so there is nothing to crash from and nothing to keep you up. Lion's Mane, Reishi and Cordyceps, 1,000mg each, on a roasted chicory root base that tastes like coffee. 30 servings.
$49.50 CAD on subscription, or $66.00 one time
$1.65 a serving on subscription, $2.20 one time
Rich and roasted: chicory, mesquite, Ceylon cinnamon, vanilla
Steady energy from Cordyceps, not from caffeine
Subscription saves 25% and ships free, delivered every 30, 60 or 90 days. Cancel any time. A one-time bag is $66.00 CAD plus shipping.
Choose Fungki30-day satisfaction guarantee. Cancel any time.
25% off
44mg, a steady lift, no crash
Fungki Coffee. Low-acid cold brew and decaf with 44mg of caffeine, less than half a regular coffee. Lion's Mane and Reishi, a 3,000mg dried-mushroom equivalent, with Siberian ginseng to keep the lift level. 30 servings.
$49.50 CAD on subscription, or $66.00 one time
$1.65 a serving on subscription, $2.20 one time
Tastes like coffee, because it is coffee
The lift with no jitters and no crash, the most repeated line in its reviews
Subscription saves 25% and ships free, delivered every 30, 60 or 90 days. Cancel any time. A one-time bag is $66.00 CAD plus shipping.
Choose Fungki Coffee30-day satisfaction guarantee. Cancel any time.
What people who cut their caffeine report
Jitter-free and tasty!!
I’m verrrry sensitive to caffeine but genuinely love the taste of coffee, so I was hesitant to try this (even knowing it’s low-caffeine). But I trust Rainbo, so I gave it a shot and I’m so glad I did. No impending doom or shakes, just a subtle boost of energy and lazer focus (this is a huge win for me!!).
Haleigh R., Fungki Coffee
Verified Buyer
Great Afternoon Coffee Alternative
Great afternoon coffee alternative. Without the problems sleeping later!!!
Jenn C., Fungki
Verified Buyer
My morning go pill!
I love this as my morning go pill. One cup keeps me alert and focussed without being wired.
Michelle P., Fungki Coffee
Verified Buyer
Fungki
Tastes good and I have noticed a difference in my mood and energy levels. Particularly on days when I am tired, this has been a helpful alternative to caffine.
Christopher M., Fungki
Verified Buyer
I love supporting Canadian products!
I love supporting Canadian products and it is delicious! It taste like coffee and without the upset stomach.
Shawn K., Fungki Coffee
Verified Buyer
Love love love
I love love love the taste! I’ve tried 2 other mushroom drinks - one just didn’t mix in properly and stayed grainy and one gave me stomach aches. Fungki didn’t do any of those things! I look forward to my mushroom “coffee” every morning and it’s genuinely a ritual for me now
Saniya S., Fungki
Verified Buyer
What to expect
- Day 1. Two teaspoons, hot water, stir. Fungki Coffee tastes like coffee because it is coffee; Fungki is roasted chicory, mesquite and Ceylon cinnamon.
- Week 1. If you cut your caffeine, your body notices for a few days, then it settles into the steady version of your morning. Keep the ritual and drink water.
- Week 4. Your next bag arrives before you run out. In our 2025 customer survey, 83% of daily takers who noticed a benefit had been consistent for 30 days or more (n=36). Give it the month.
SATISFACTION GUARANTEE
Try the whole bag. Then decide.
If it is not what you hoped, return it within 30 days of delivery for a full refund of the purchase price, less shipping. Email info@rainbo.com with your order number and we will sort it out.
The questions people ask about caffeine
How much caffeine is in mushroom coffee?
Most mushroom coffees carry 35 to 95mg a serving, depending on the brand and how much real coffee is in the blend. A regular 8 oz coffee carries about 95mg. Fungki Coffee carries 44mg, and Fungki carries none.
Is Fungki Coffee decaf?
No. It is a blend of low-acid cold brew and decaf, which is how it lands at 44mg instead of the 95mg or so in a regular coffee: enough for the lift, not enough for the jitters. If you want zero caffeine, choose Fungki.
Will I feel the drop if I switch from regular coffee?
If you are leaving a full-strength habit, your body notices for a few days. In the research the adjustment starts within a day, peaks around the second day and is gone within nine. Fungki Coffee at 44mg makes the drop smaller. Keep the ritual and give the mushrooms the month.
Can I drink it in the afternoon or evening?
Fungki, yes. It has no caffeine at all, and a warm serving after dinner is how many people use it. Fungki Coffee carries 44mg, so time it the way you would a small coffee.
Is it safe if I am pregnant or on medication?
If you are pregnant or breastfeeding, on medication, or have ever reacted to a mushroom, ask your practitioner before you start. Both labels print every ingredient and its extract ratio, so it is easy to check.
What does 3,000mg mean on the bag?
It is a dried-mushroom equivalent. Fungki Coffee holds about 283mg of concentrated fruiting body extract per two teaspoon serving, at 8:1 for Lion's Mane and 16:1 for Reishi, which stands in for 3,000mg of dried mushroom. Fungki works the same way with three mushrooms at 1,000mg each.
Choose your caffeine, keep the ritual
A steady 44mg with Fungki Coffee, or none at all with Fungki, and 3,000mg of mushrooms either way. Both ship with 25% off and free shipping on subscription.
Choose your Fungki30-day satisfaction guarantee. Cancel any time.
References
- US Department of Agriculture, FoodData Central entry 171890. Coffee prepared from grounds with tap water: 40mg caffeine per 100g. https://fdc.nal.usda.gov/food-details/171890/nutrients Read 2026-10-24
- Fredholm BB, Battig K, Holmen J, Nehlig A, Zvartau EE. Actions of caffeine in the brain with special reference to factors that contribute to its widespread use. Pharmacological Reviews, 1999. https://pubmed.ncbi.nlm.nih.gov/10049999/ Read 2026-10-24
- Juliano LM, Griffiths RR. A critical review of caffeine withdrawal: empirical validation of symptoms and signs, incidence, severity, and associated features. Psychopharmacology, 2004. https://pubmed.ncbi.nlm.nih.gov/15448977/ Read 2026-10-24
- La Monica MB and colleagues. Lion's Mane, 1g single dose, double-blind placebo-controlled crossover trial in healthy adults: working memory and reaction time. Nutrients, 2023. https://pubmed.ncbi.nlm.nih.gov/38140277/ Read 2026-10-24
- Health Canada, Licensed Natural Health Products Database. Fungki Coffee licence record: Lion's Mane 188mg of an 8:1 extract, Reishi 95mg of a 16:1 extract, eleuthero root 90mg of a 10:1 extract, caffeine 44.3mg per two teaspoon serving. https://health-products.canada.ca/lnhpd-bdpsnh/index-eng.jsp Read 2026-10-24