Reishi Mushroom Powder
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Try Me Offer: Just £15 Per Jar (Normally £24)
30 Servings - 1 Month Supply - 1 Per Customer
Reishi mushroom powder is traditionally used to support calm, immune health, and restorative sleep, making it one of the most popular adaptogenic mushrooms. Reishi powder is often taken to help manage stress, wind down in the evenings, and promote balance throughout the body and mind.
100% Natural, Vegan and Non-GMO
Fast & Free Tracked UK Shipping
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Take the edge off and unwind - naturally. Calm As Fung is powered by Reishi mushroom extract, traditionally used to support relaxation, immune health, and deeper sleep. It’s a calming adaptogen that helps you rebalance and recharge after long days or restless nights.
Calm As Fung isn’t your average mushroom powder. Each 2,000mg serving delivers a high-impact dose of Reishi, dual extracted (10:1) for maximum bioavailability and effectiveness. Made using 100% fruiting body - with no mycelium or grain filler - it’s rich in triterpenes and beta-glucans, compounds known to support stress reduction and immune balance. Every batch is third-party lab tested, vegan, and non-GMO - so you can relax, knowing it’s the real deal.
Add 1/2 teaspoon (2g) of powder to hot or cold water, tea, or your evening smoothie. Take daily to support your wind-down routine, immune system, and inner calm.
- All orders are packaged & dispatched from the UK with fast, tracked delivery within 24 hours.
- Our eco-friendly packaging is 100% recyclable.
- More information is available at Shipping & Returns.
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What Our Customers Are Saying
Discover why thousands trust Fung’d Up daily for focus, calm, & energy.
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from 89 reviewsReally feel more alert and alive with better memory recall and I’m having more creative thoughts. Highly recommend the stuff.
Really surprised and thankfully that I decided to try the Reishi powder… from the 2nd night I slept right through the night, I was so surprised when I saw it was 8.30 am.. I take half a tea spoonful in my green tea with a lemon slice in the evening .. really feel so much more rested and not having the horrible fatigue that has always got me down..
Would highly recommend for insomnia or anxiety as it seems to calm my mind down before going to bed.
The Focus & Calm Stack has honestly transformed my daily rhythm. I used to feel constantly overstimulated – struggling to focus during the day and then unable to wind down in the evening. This combo has created such a shift. Lion’s Mane keeps me clear-headed and productive, especially during long stretches of work. Then Reishi gently helps me slow down, relax, and sleep deeper than I have in months. It’s the perfect balance – no crashes, no grogginess, just a steady, calm sense of clarity. The powders are clearly top quality – no weird taste, no additives – and delivery was incredibly quick. I’ve now subscribed because I don’t want to be without it. Genuinely brilliant.
Really impressed with how this helps me stay focused without feeling tense. Plus I’m sleeping better too – win-win.
Since taking the Focus & Calm Stack, my sleep has improved and my head feels so much clearer. It’s great knowing I’m supporting both focus and calm with something natural. Subscribed after a week – can’t imagine going without it now.
This combo is brilliant. I feel sharper during the day but less wound-up in the evenings. It’s made a noticeable difference to my mood and sleep. Highly recommend for anyone juggling work stress or brain fog.
I take the Focus & Calm Stack mid-morning, and it keeps me level-headed and clear for the rest of the day. I’m less frazzled, more focused, and actually sleep better too. It’s subtle but effective – and the quality is top notch. No weird aftertaste, no fillers, and fast delivery as always.
I started this stack hoping to feel more levelled out, and it’s exceeded my expectations. I’m calmer in stressful situations but still have the energy to get through long shifts and evening workouts. It’s the perfect combo – no highs or crashes. Great quality, no filler nonsense, and arrived in just two days. I’ve already signed up for the subscription.
The Calm & Energy Stack has been a total lifesaver. I used to swing between feeling wired and totally drained, but now I feel steady and clear throughout the day. Reishi helps me stay calm under pressure, and Cordyceps gives me the energy to get through my to-do list. No jitters, no slump – just balanced. Delivery was fast and I love how clean and pure the powders are.
Been using the Energy & Focus Stack before gym sessions and for long work days – and it just works. I stay dialled in without the buzz or come-down of coffee or pre-workouts. Lion’s Mane keeps my brain clear and Cordyceps gives me real endurance. Proper quality stuff, no fillers, and it arrived within 48 hours. Highly recommend.
I’m on my feet all day and need to stay switched on. This stack helps me feel sharper mentally and more energised physically – without relying on caffeine. I don’t get the afternoon slump anymore, and I’m getting more done with less stress. Big fan of how clean and natural it feels. Subscribed after the first week!
The Energy & Focus Stack is exactly what I’ve been looking for. I’ve swapped my second and third coffees for this, and I’m getting better focus, no crash, and more stamina through the day. It’s clean, effective, and you can really feel the difference – especially in long meetings or workouts. Top quality and super fast delivery too.
It’s rare to find a product that actually lives up to the hype, but this does. I get the mental clarity from Lion’s Mane, the calm from Reishi, and clean energy from Cordyceps – no caffeine jitters or crashes. I’ve noticed better productivity at work and better recovery at the gym. All-round brilliant stack. Fast delivery and great value with the subscription too.
I bought the Essentials Stack while recovering from burnout and honestly? It’s helped me feel like myself again. My sleep has improved, my focus is sharper, and I finally have steady energy instead of ups and downs. Each powder does something slightly different, but together they’re incredibly effective. I’ve subscribed and won’t be without it now.
I used to rely on caffeine and sheer willpower to get through the day – not anymore. The Essentials Stack keeps me calm during stressful meetings, focused on my to-do list, and still energised enough to make it to the gym after work. I love that it’s natural, clean, and I don’t crash anymore. Total game-changer.
Why Customers Get Fung’d Up
Real mushrooms. Real benefits. Zero fillers.




Frequently Asked Questions
Reishi is known for supporting stress relief, immune balance, and deeper sleep. It’s a natural adaptogen that promotes calm and recovery.
Reishi is best taken 1 to 2 hours before bed to help you wind down and promote restful sleep. It can also be taken in the evening to reduce stress.
Reishi contains beta-glucans and triterpenes that help modulate the immune system, making it more resilient to daily stressors.
While not a medication, Reishi’s adaptogenic properties help regulate stress hormones and promote emotional balance over time.
Yes - our Reishi is 100% fruiting body, semi-wild cultivated on Duan wood, dual-extracted, and third-party lab tested for clean results.
Yes - Reishi stacks well with other functional mushrooms like Lion’s Mane or Cordyceps. It’s commonly paired in morning/evening routines.