Try Gut Kombucha and
Save Up to 57%
Your first step toward lighter digestion, more energy, and a balanced gut. Join over 12 million people who’ve trusted PureHealth Research to help them feel better from the inside out.
PureHealth Research
Gut Kombucha
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Supports a balanced gut microbiome
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Addresses bloating and digestive discomfort
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Promotes natural detox and liver wellness
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Raises antioxidant defenses against oxidative stress
Choose Your Package
CHOICE
SUPERHERO
Regular Price: $414
$29.99 Per bottle
YOU SAVE: $234.06
We have partnered with Flex to make this process fast and easy. Follow the steps below to obtain your Letter of Medical Necessity (LMN) and claim your HSA/FSA savings.
⚠️ Important Timing Rules
When to get your letter: To be valid for reimbursement, you must obtain your LMN before your purchase or within 24 hours after your purchase.
Expiration: Your LMN is valid for 12 months with PureHealth Research from the date of issuance.
Step 1: Get Your Letter of Medical Necessity
Click the link to start a quick (under 2 minutes) online consultation with a licensed health provider through our partner, Flex. LINK
- Complete the assessment: Answer a few questions about your health needs.
- Receive your LMN: Once approved and purchased ($15), your Letter of Medical Necessity will be generated instantly and emailed to you within 24 hours.
Step 2: Make Your Purchase
If you haven't already, purchase PureHealth Research supplement products using your preferred payment method (Credit/Debit card).
- Note: If you already purchased, ensure you completed Step 1 within 24 hours of your order time.
Step 3: Submit for Reimbursement
Once you have your LMN from Flex and your Order Receipt, you can submit them to your HSA/FSA provider.
- Log in to your HSA/FSA provider’s portal.
- Upload two documents:
- Your itemized receipt from PureHealth Research
- Your Letter of Medical Necessity from Flex
*Flex eligibility and approval are required. PureHealth Research does not guarantee eligibility and is not responsible for approval.
Frequently Asked Questions
What is an HSA or FSA?
Health Savings Accounts (HSAs) let you set aside pre-tax dollars to pay for qualified health expenses. HSAs are linked to high-deductible health plans, and funds in these accounts roll over year after year.
Flexible Spending Accounts (FSAs) allow you to use pre-tax dollars for eligible health expenses. Unlike HSAs, FSAs are not tied to a specific health plan and often require you to use the funds within the calendar year. FSAs are typically provided by employers.
Can I use HSA/FSA for subscriptions?
Yes. Subscriptions require a short health assessment and a Letter of Medical Necessity.
What is a Letter of Medical Necessity (LMN)?
A Letter of Medical Necessity is a document from a licensed healthcare provider that verifies the medical necessity of a product or service, making it eligible to purchase using your HSA or FSA. This might include items or treatments like supplements or physical therapy that aren’t automatically recognized as eligible expenses.
Do I need a new Letter of Medical Necessity for every purchase?
No. Your LMN is valid for 12 months. You can use the same letter for any qualifying PureHealth Research purchases made within one year of the letter's date.
What if my claim is denied?
Most HSA/FSA providers accept LMNs from Flex. If they request more information, please contact the Flex support team at support@withflex.com
I don’t have an HSA/FSA. Can I still benefit from Flex?
Unfortunately, Flex services are for individuals who have HSA or FSA accounts. We encourage you to ask your employer about information on your HSA or FSA!
Do I need to do anything with my Letter of Medical Necessity?
You should keep it on file for at least three years in the event of an IRS audit of your HSA or FSA account. Occasionally, FSAs may ask for the Letter to confirm the eligibility of your purchase.
Vitality Club 7 Days Free Trial
+ Shipping cost $4.95 in US
This is a one time payment
Vitality Club 7 Days Free Trial
Free Shipping in US
This is a one time payment
Vitality Club 7 Days Free Trial
Free Shipping in US
This is a one time payment
This purchase includes a one-time supply of Gut Kombucha and enrollment in the recurring Vitality Club subscription. You may remove the subscription from your cart or cancel it anytime, subject to Terms & Conditions.
By selecting "Subscribe & Save" option above, you agree to receive a shipment of Gut Kombucha each month and enroll in the recurring Vitality Club subscription, which can be removed from your cart or canceled anytime. You are authorizing us to charge your credit card monthly, matching the package you have selected. Coupon or discount codes can only be applied to initial purchases and such discounts do not apply to future autoship products. You can stop shipments at any time in your customer account or by calling our customer support team toll free at (888) 558-9836, Mon - Sun 24/7, Outside the US, call us at +1-863-301-4007. Terms & conditions apply
Vitality Club:
Your Complete Wellness Partner
- You've chosen quality supplements – unlock their full potential with expert guidance tailored just for you. Get exclusive access to health experts, nutritionist-approved recipes, targeted workouts and science-backed health tools that work together with your supplements.
- Experience faster results and real transformation. Our strategies could help you get more from every bottle, so you could reach your health goals with confidence.
- Try it FREE and see the difference for yourself! As a Vitality Club subscriber, you'll continue to receive ongoing expert support and exclusive content. Not for you? Simply contact our customer support team to cancel anytime.
By leaving the Vitality Club item in your cart, you agree to receive access and subscription to the digital Vitality Club. After your free trial, your credit card will be charged $77 per month for 6 months. Coupon or discount codes can only be applied to initial purchases and do not apply to future autoship products. You can cancel your subscription at any time through your customer account or by contacting our support team toll-free at (888) 558-9836. Outside the US, call us at +1-863-301-4007. All terms & conditions apply
Simple. Instant. Effortless.
How to use
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STEP 01
Add the powder
Add one scoop into 8 fl oz of water.
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STEP 02
Stir or swirl
It dissolves quickly, you don’t need to blend or shake it.
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STEP 03
Enjoy chilled or at room temperature
No strong fermented taste.
Just a light, pleasant drink that’s easy to make part of your day.
What to Expect
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Week 1–2
Your gut begins adjusting.
Many people notice reduced bloating and a lighter feeling after meals in the first two weeks.
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Week 3–4
Comfort & Regularity
Digestion starts to feel more regular and comfortable. Energy levels may begin to improve as your microbiome finds its balance.
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Month 2
Antioxidant Boost
Antioxidant and detox support builds over time. Many users report feeling noticeably lighter, more energized, and less reactive to foods that used to cause discomfort.
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Month 3+
Sustained Wellness
Consistent daily use supports long-term microbiome balance, metabolic wellness, and sustained digestive comfort – the results you can actually maintain.
What to Expect
Thanks to our customers:
664,335
children already gained access to life-changing nutritional support.
1 to 1 Charity Support Program
1 bottle = life-changing nutritional support to 1 child in need
We’re proud to partner with Vitamin Angels to enrich health and hope. Through our partnership, underserved women and children across the U.S. and around the world receive the nutritional support needed to build the foundation for a healthy future. Every bottle purchased from PureHealth Research provides critical life-changing nutrition for a young child through Vitamin Angels!
Thank you for helping us build a brighter future for kids everywhere!
Frequently asked questions (faqs) about gut kombucha
CAN I TAKE GUT KOMBUCHA ALONGSIDE MY OTHER SUPPLEMENTS?
Yes. Gut Kombucha is formulated with natural ingredients and is generally well-tolerated alongside other supplements. If you have a specific health condition or take prescription medication, we recommend checking with your doctor first.
HOW IS THIS DIFFERENT FROM STORE-BOUGHT KOMBUCHA?
Store-bought kombucha often contains added sugars, varies widely in probiotic potency, and requires refrigeration. Gut Kombucha uses InstaKOMBU™ – a standardized, concentrated fermented powder that delivers consistent probiotic, antioxidant, and detox support every time.
WHEN SHOULD I TAKE IT?
Any time of day works. Many people find it easiest to take in the morning as part of their routine, or with a meal. Consistency matters more than timing.
HOW LONG BEFORE I NOTICE RESULTS?
Most people begin noticing changes within the first 1–2 weeks, particularly reduced occasional bloating and improved digestive comfort. Deeper benefits, like antioxidant support and metabolic wellness, build over time with consistent use.
WHAT DOES IT TASTE LIKE?
Lightly tart – similar to traditional kombucha, but not too sweet. Easy to dissolve and enjoy chilled or at room temperature.
WHAT IF IT DOESN'T WORK FOR ME?
You have a full 365 days to try it. If you're not satisfied with your results for any reason, contact us and we'll refund every penny.
IS THERE A SUBSCRIPTION OPTION?
Yes. Subscribe and Save gives you the best price per bottle and ensures you never run out. You can cancel or pause anytime.
FSA/HSA ELIGIBILITY
We have partnered with Flex to make this process fast and easy. Follow the steps below to obtain your Letter of Medical Necessity (LMN) and claim your HSA/FSA savings.
⚠️ Important Timing Rules
When to get your letter: To be valid for reimbursement, you must obtain your LMN before your purchase or within 24 hours after your purchase.
Expiration: Your LMN is valid for 12 months with PureHealth Research from the date of issuance.
Step 1: Get Your Letter of Medical Necessity
Click the link to start a quick (under 2 minutes) online consultation with a licensed health provider through our partner, Flex. LINK
- Complete the assessment: Answer a few questions about your health needs.
- Receive your LMN: Once approved and purchased ($15), your Letter of Medical Necessity will be generated instantly and emailed to you within 24 hours.
Step 2: Make Your Purchase
If you haven't already, purchase PureHealth Research supplement products using your preferred payment method (Credit/Debit card).
- Note: If you already purchased, ensure you completed Step 1 within 24 hours of your order time.
Step 3: Submit for Reimbursement
Once you have your LMN from Flex and your Order Receipt, you can submit them to your HSA/FSA provider.
- Log in to your HSA/FSA provider’s portal.
- Upload two documents:
- Your itemized receipt from PureHealth Research
- Your Letter of Medical Necessity from Flex
*Flex eligibility and approval are required. PureHealth Research does not guarantee eligibility and is not responsible for approval.
Frequently Asked Questions
What is an HSA or FSA?
Health Savings Accounts (HSAs) let you set aside pre-tax dollars to pay for qualified health expenses. HSAs are linked to high-deductible health plans, and funds in these accounts roll over year after year.
Flexible Spending Accounts (FSAs) allow you to use pre-tax dollars for eligible health expenses. Unlike HSAs, FSAs are not tied to a specific health plan and often require you to use the funds within the calendar year. FSAs are typically provided by employers.
Can I use HSA/FSA for subscriptions?
Yes. Subscriptions require a short health assessment and a Letter of Medical Necessity.
What is a Letter of Medical Necessity (LMN)?
A Letter of Medical Necessity is a document from a licensed healthcare provider that verifies the medical necessity of a product or service, making it eligible to purchase using your HSA or FSA. This might include items or treatments like supplements or physical therapy that aren’t automatically recognized as eligible expenses.
Do I need a new Letter of Medical Necessity for every purchase?
No. Your LMN is valid for 12 months. You can use the same letter for any qualifying PureHealth Research purchases made within one year of the letter's date.
What if my claim is denied?
Most HSA/FSA providers accept LMNs from Flex. If they request more information, please contact the Flex support team at support@withflex.com
I don’t have an HSA/FSA. Can I still benefit from Flex?
Unfortunately, Flex services are for individuals who have HSA or FSA accounts. We encourage you to ask your employer about information on your HSA or FSA!
Do I need to do anything with my Letter of Medical Necessity?
You should keep it on file for at least three years in the event of an IRS audit of your HSA or FSA account. Occasionally, FSAs may ask for the Letter to confirm the eligibility of your purchase.
You have 365 days to try Gut Kombucha and see the results for yourself risk-free. If you are not 100% satisfied — simply contact us and we will gladly refund your money.
365 DAY MONEY BACK GUARANTEE
Enjoy a FULL YEAR to try Gut Kombucha and experience the results for yourself. If you’re not 100% SATISFIED – simply let us know and we’ll gladly refund your money – guaranteed.