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1. Most of Your Immune System Lives in Your Gut, and Turkey Tail Works There
Turkey Tail is natural gut and immune support. Its polysaccharides are immunomodulating. They help your immune system adapt to what it needs, every day.
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2. Chaga Is Your Daily Antioxidant
Wild-harvested from birch trees in Northern Canada, Chaga is a source of antioxidants and is used in herbal medicine to support the immune system.
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3. Two Mushrooms, One Job Each
Turkey Tail brings immunomodulating polysaccharides. Chaga brings antioxidants. One bottle of each, in one ritual, so you never have to choose between them.
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4. Dual Extracted for More of the Mushroom
Hot water pulls out the polysaccharides. Alcohol pulls out the triterpenes. Rainbo extracts both ways, so every drop carries both.
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5. A Few Drops in the Drink You Already Make
4-8 mL in your coffee, tea, matcha or water, or straight under the tongue. No capsules to swallow, no powders to whisk.
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6. Grown and Gathered in Canada
Turkey Tail is sustainably cultivated in Canada. Chaga is wildcrafted up north by foragers who leave enough to keep it growing. Made in Canada by a B Corp.
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7. Daily Is the Point, and Subscription Makes Daily Automatic
In our 2025 survey, 83% of daily takers who felt a benefit had been consistent for 30 days or more. Subscribe and your Stack arrives every 30, 60 or 90 days, 25% off, with free shipping.
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Vegan
Non GMO
B-Corp Certified
Climate Neutral
Made in Canada
How Turkey Tail and Chaga Support Your Immune System
Turkey Tail
4-8 mL a day
The immunity mushroom. Its polysaccharides help your immune system adapt to what it needs. Ours is grown in Canada. We extract it with water and ethanol, then take the ethanol out and add glycerine. So it is alcohol-free and a little sweet.
Chaga
4-8 mL a day
The antioxidant mushroom. It grows wild on birch trees in Northern Canada. Its black crust is melanin. Hot water pulls out the polysaccharides and alcohol pulls out the triterpenes. It is used in herbal medicine to support the immune system. Choose alcohol-based or glycerine-based.
Formulated for Daily Immune Support
Two tinctures, one mushroom each, each with its own job. Built to fit the morning you already have.
Turkey Tail for natural gut and immune support, from immunomodulating polysaccharides.
Chaga as a daily source of antioxidants, used in herbal medicine to support the immune system.
Dual extracted, so you get the water-soluble and the alcohol-soluble compounds.
25 servings of 4 mL in every 100 mL bottle, made in Canada.
Easy to take: add it to water, warm drinks, or take it straight under the tongue.
Shop the Immunity StackWhat People Are Saying
Verified reviews of Turkey Tail, Chaga and the Immunity Stack, rated 4.92 on average.
Me 🤝My stack
I noticed a significant difference in my overall wellness, mental clarity, focus, and immune support. It’s become a non-negotiable part of my daily routine!
Kirstin S.
Verified Buyer
She is beauty and she is grace
Mushrooms are magic and I've been trying to incorporate them more into my daily diet. I add in a dropper to my coffee every morning! It's become a ritual.
Alexandra P.
Verified Buyer
The real deal
I really like these, I like that you can taste the actual mushroom. I like that the mushroom is sustainably and natively sourced. I believe this is a good clean product that is doing my body well.
Elizabeth W.
Verified Buyer
Easy addition to your routine
I drop a tincture into my coffee each morning and it blends without any bad taste.
Siobhan M.
Verified Buyer
From our Founder, Tonya:
Rainbo was born in 2018 in my Toronto apartment after many transformative experiences with fungi, but the spores of awareness were planted much earlier.
I created Rainbo to spread mushrooms to the masses and get people healthier and more deeply connected to nature.
I’m so happy our journeys have converged at this moment in time because now is the time. Thank you for being here and welcome to our Rainbo world.
Tonya, Founder, Holistic Nutritionist
Support Your Immune System, Every Day
Turkey Tail and Chaga, one 100 mL bottle of each, delivered every 30, 60 or 90 days with free shipping. Change or cancel any time.
$70.10 CAD on subscription, $94 bought separately
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Starting with one bottle?
Turkey Tail on its own: natural gut and immune support from immunomodulating polysaccharides, cultivated in Canada, alcohol-free. $35.25 CAD on subscription.
Shop Turkey TailQuestions before your first order
How do I take it?
4 mL of each, once or twice a day, with food. The dropper fills to 1 mL, so 4 mL is four fills. Add it to coffee, tea, matcha or water, or take it straight under the tongue. Both go in the same drink.
What does it taste like?
Turkey Tail is glycerine-based, so it is lightly sweet and earthy; plenty of customers take it straight from the bottle. Chaga is earthy too, and in a coffee or a tea latte it disappears.
Is there an alcohol-free option?
Turkey Tail is always alcohol-free. Chaga comes alcohol-based, where the alcohol is the solvent that pulls out the triterpenes, or glycerine-based. Choose at checkout; alcohol-based is the default.
How long does a bottle last, and when will I notice it?
Each 100 mL bottle holds 25 servings of 4 mL. Immune support is a daily ritual, so give it a month: in our 2025 survey, 83% of daily takers who reported a benefit had been consistent for 30 days or more. Subscribe every 30, 60 or 90 days to match your pace.
Can I change or cancel my subscription?
Yes. Change the timing, skip or cancel any time. Shipping is free on every subscription order.
I'm pregnant, breastfeeding or on medication. Can I take it?
Ask your health care practitioner before you start. Both tinctures are for adults 18 and over.
Turkey Tail NPN 80104087 · Chaga NPN 80093487 (alcohol-based), NPN 80124353 (glycerine-based). Authorized for sale by Health Canada.