“Two kids, one dog & a lot of cold evenings. resB is the one thing we never skip, it's just part of my flu season defense.”
Jen M., Verified Buyer
“I host every holiday & I'm the one everyone counts on. Two capsules with my coffee & I'm out the door. Love that it was made by a lung doctor.”
Mark T., Verified Buyer
“Between work trips & the kids' December schedule, I needed something simple. The subscription shows up before I run out, & that's one less thing on my list.”
Dana R., Verified Buyer
Gut-Lung Axis
Your gut & lungs are always talking
Clinically shown to improve respiratory symptom scores in 12 weeks.²
It starts in your gut
Your gut & lungs stay in constant contact through your immune system. resB’s three proprietary strains work in your gut to support lung health & immune function from there.*
Clinically Shown to Improve Respiratory Symptom Scores in 12 Weeks*²
A score built around real life, so this result reflects how people felt day to day on two capsules a day.*
The breath behind every walk, climb & busy day, supported with two capsules a day.*
Fewer interruptions to your conversations, workouts & everyday plans, from one simple routine.*
More breath for the stairs, the walk & everything else on your list.*
What is SGRQ?
St. George's Respiratory Questionnaire (SGRQ) is a standard survey that measures how your breathing affects your daily life, from your energy to the things you love doing.
What is FEV1?
Forced expiratory volume in one second (FEV1) is how much air you can breathe out in one second, a key measure of lung function.
What is SGRQ: Cough?
The cough section of the SGRQ, tracking how often coughing shows up in your day.
What is SGRQ: Dyspnea?
Dyspnea is the medical term for shortness of breath, & this part of the SGRQ tracks how often you feel it.
Make it part of your daily routine
Daily breathing & immune support*
The only probiotic made for your lungs. Two capsules a day, developed by a lung doctor, so one thing on your list is already handled.
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100,000+ Happy CustomersMaximize your Results
With holidays coming up, gift yourself the feeling of being at your best.
Potent, Clean & Natural Ingredients
resB® Probiotic Blend · 144 mg
Three proprietary strains, L. plantarum RSB11®, L. acidophilus RSB12® & L. rhamnosus RSB13®, working from your gut to support lung health & immune function.*
Great For:
Vasaka leaf
Part of the 240 mg resB® Botanical Blend. Used for centuries in Ayurvedic tradition to support the respiratory system.*
Great For:
Holy basil & turmeric
Also in the Botanical Blend. Holy basil, a traditional adaptogen, plus turmeric root for a healthy inflammatory response.*
Great For:
Our Scientific Advisory Board
Meet the physician-scientists and researchers behind our formulas.
Vivek Lal, MD, FAAP
Founder & CEO, resbiotic
Amit Gaggar, MD, PhD
Chief Medical Officer
Kara Siedman, RDN, CDCES
Director of Partnerships
Thea Nicola, MD, PhD, MBA
Director, Lab Operations
Your Questions Answered
Your gut & lungs are connected through your immune system, a link called the Gut-Lung Axis. resB is the only probiotic made for your lungs, with three proprietary strains plus botanicals traditionally used for respiratory support. It's a simple daily way to support lung health, breathing & immune function.*
No supplement can promise that, & resB isn't a medicine. It's daily breathing & immune support you can count on while everyone counts on you.* Keep up the basics too: sleep, handwashing & your doctor's advice for the season.
Two capsules a day, every day. Pick a moment you never skip, like breakfast or your morning coffee, & keep the jar there. Traveling for the holidays? Pack a few days' worth in your carry-on so the routine comes with you.
Everyone's different. resB is made for consistent daily use, so think of it as part of your routine, not a quick fix. A subscription makes it easy to stay consistent.
resB is made for adults. In our pilot study, 100% of participants noted no adverse side effects.*¹ If you're pregnant, nursing, taking medication or managing a health condition, check with your doctor first. For kids, ask your pediatrician.
With subscriptions, you save 15% off every month! Orders ship every month or every 3 months, depending on your pick, & you can skip, swap or cancel anytime from your account. Orders ship within 2-5 business days, & your first order is backed by our 30-day money back guarantee.
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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. ¹Results observed in a human pilot study of resB® Lung Support Probiotic. Individual results may vary. ²Results observed in a 12-week randomized, double-blind, placebo-controlled human clinical study of resB® Lung Support Probiotic. Individual results may vary.