• resB® Gut Lung Support Probiotic
  • resB® Gut Lung Support Probiotic
  • resB® Gut Lung Support Probiotic
  • resB® Gut Lung Support Probiotic
  • resB® Gut Lung Support Probiotic
  • resB® Gut Lung Support Probiotic
  • resB® Gut Lung Support Probiotic
  • resB® Gut Lung Support Probiotic
  • resB® Gut Lung Support Probiotic

199 total reviews

resB® Gut Lung Support Probiotic

#1 clinically validated and pulmonologist recommended lung supplement

Respiratory Support + Improved Digestion + Immunity Boost

resB® is the world’s #1 clinically proven and pulmonologist-recommended lung probiotic supplement. Our top-selling breath restorative formula combines live probiotic bacteria strains (RSB11®, RSB12®, and RSB13®) with ancient herbs to help your respiratory system expand easily, improve digestion, and strengthen your immunity response.*

resB® Lung Support is the result of multi-year research by our founder, Dr. Vivek Lal, and his team of scientists, who mapped the gut microbiome's role in regulating inflammatory pathways to scientifically support the lung structure and function through the gut-lung axis.

resB® SuperBlend
  • Lactiplantibacillus plantarum RSB11®
  • Lactobacillus acidophilus RSB12®
  • Lacticaseibacillus rhamnosus RSB13®
  • Vasaka (Adhatoda vasica) leaf extract
  • Holy Basil (Ocimum sanctum) leaf extract
  • Turmeric (Curcuma longa) root extract

✓ Enhance airway & lung health to breathe easy

✓ Helps in clearing mucus

✓ Naturally minimizes coughing

✓ Seasonal sinus & bronchial support

✓ Improves pulmonary structure & function

✓ Improves digestion and gut health

✓ Improves immune health

✓ Better sleep due to better breathing

Improvement Timeline*
  • First Week: Body comfort with less bloat and improved regularity
  • 1-2 Weeks: Unlocked motivation from all-natural energy and enhanced restful sleep
  • 3-4 Weeks: Improved and easier breathing
  • Continuous Use: Boosted immunity support
Our Science-Backed Approach

We collaborate with the world’s leading scientists, research partners, and manufacturers, from ingredient sourcing, preclinical testing, product formulation, and clinical trials to third-party stability testing. We do all this to develop and produce the world’s first clinically validated microbiome-based nutritional interventions for day-to-day health.

Our proprietary strains are all designated GRAS (Generally Regarded as Safe) by the FDA, backed by human clinical trials (in vivo) and cellular laboratory (in vitro) safety and proof of concept data. In addition, the finished product has also undergone extensive clinical trials for safety and efficacy. The resB® blend was formulated by optimizing indicative biomarker responses in human tissue to support lung health best.


We recommend taking 2 resB® capsules (30B CFU) daily, with or without food – the choice is yours!

  • Gluten Free
  • Dairy Free
  • 100% Vegan
  • Nut Free
  • 30B CFU
  • Non GMO
  • Probiotic
  • Sugar & Caffeine Free
  • Keto Friendly
  • Paleo Friendly
  • ★★★★★

    “I can actually climb up a flight of stairs without getting winded at the top! ”

    Donna H, Hartford, Connecticut
  • ★★★★★

    “I'm a marijuana smoker and don't think that's going to change. I felt like this helped mitigate a lot of the negative effects of my behavior.”

    Samuel, Tallahassee, Florida
  • ★★★★★

    “I thought the probiotic I was taking worked well until I switched to resB! ”

    C. Malbec, Buffalo, New York
  • ★★★★★

    “Was nervous about the size of the pill because other probiotics tend to be large, but was pleasantly suprised it's about the size of a tylenol”

    Kendyl, LA, California
  • ★★★★★

    “It worked within a few days. Coughing suppressed, and after a week, no more cough!”

    Andrew, Austin, Texas
  • Activate your Gut-Lung Axis*

    Your respiratory, digestive, and immune systems are connected physically and biochemically at the microbiome level. resB® was designed by doctors to target underlying cellular pathways for peak performance across your body's systems.*

    Fuel your microbiome and breathe easier!

First in Class, with the Highest Quality Standards

resB® Lung Support Other Probiotic Products Other Lung Products Dietary Probiotics & Herbs
Doctor-developed blend of probiotics and botanicals
Research derived potency (30B CFU per day)



Shown to produce specific beneficial short-chain fatty acids (SCFAs)



Clinically studied respiratory benefits*


Moisture resistant bottle to preserve potency without refrigeration


Extensive third-party testing to meet the highest purity, stability and production quality standards




  • How it Works

    The Gut-Lung Axis

    The probiotic bacteria in resB® Lung Support has been known to produce specific short-chain fatty acids that support digestive health directly and travel through systemic circulation to support respiratory health. In addition, these strains downregulate MMP9 signaling, which reduces neutrophilic inflammation.*

    The Gut-Immune Connection

    Did you know 70% of your immune cells live in your gut? The probiotic bacteria and botanicals in resB® have also been clinically studied for their immune-supportive benefits.*

What's Inside

  • Probiotic Blend

    Our respiratory-specific, multi-strain probiotic blend contains Lactiplantibacillus plantarum RSB11®, Lactobacillus acidophilus RSB12®, and Lacticaseibacillus rhamnosus RSB13®, which work together to target the gut-lung axis.*

  • Vasaka Leaf

    Vasaka, also known as Adhatoda vasica or malabar nut, is a respiratory remedy in the Ayurvedic and Unani traditions. Scientists have isolated two active compounds, vasicine and vasicinone, from the vasaka leaf that are key to how vasaka supports healthy breathing.*

  • Turmeric Root

    Turmeric (Curcuma longa) root is known to have a wide range of health benefits. Its respiratory uses are well-documented in the Ayurvedic tradition. More recently, scientists have explored turmeric's immune-supportive and antioxidant properties.*

  • Holy Basil

    Ocimum sanctum, commonly known as holy basil or tulsi, is also a rockstar of the Ayurvedic tradition, historically used to support a healthy immune system. Scientific inquiry suggests this ancient herb also has adaptogenic and antioxidant properties.*

Asked & Answered

Anyone 18+ who wants to prioritize their gut, lung, and immune health!

resB® is a top physician-recommended and formulated supplement for continuous respiratory care. Several customers use resB® for chronic respiratory structure and function support, cough relief, lung detox, and mucus relief.

While there are no known contraindications with resB® Lung Support and any over-the-counter or prescription medications, we encourage you to check in with your prescribing physician before adding new products to your regimen.

Additionally, if you are taking an antibiotic, take resB® at least 1 to 2 hours before or after your antibiotic dose. This is to ensure your antibiotic doesn't kill the probiotic bacteria in resB® before they have a chance to work!

resB® was designed based on over 10 years of rigorous research to support healthy respiratory structure and function, healthy digestion, and the immune system while keeping everyone in mind.

Our ingredients and products have been studied extensively in many settings, including physician-supervised pre-clinical and clinical trials in specific conditions.

That said, no supplement can make claims regarding any specific disease diagnosis. We recommend you check with your doctor or pharmacist before starting any new dietary supplement.

resB® Lung Support is precision blended and manufactured in a cGMP environment and FDA-registered facilities right here in the USA.

The formula is specifically processed for extended stability and longevity, rigorously tested for the most stringent quality, purity, and safety measures, and delivered through a temperature-controlled supply chain to ensure a consistent live CFU (Colony Forming Unit) count in every capsule every time.

We take great care and responsibility to deliver all-natural pre/pro/post-biotics! We’re currently working on publishing our third-party test results and analysis certificates. In the meantime, you can rest easy knowing that we collaborate with the world's leading scientists, research partners, and manufacturers for all our ingredient sourcing, preclinical testing, product formulation, and third-party stability testing. Each formulation contains ingredients produced in a cGMP (Current Good Manufacturing Processes) environment by FDA-certified suppliers, specifically processed for extended stability and formula longevity. Additionally, we carry non-GMO Project Verified, kosher, and gluten-free certifications.

We stand behind our products and proudly offer a 30-day money-back guarantee on your first purchase. You can read more about our return policy here.

While people often report gut health benefits as early as their first week, systemic benefits of probiotics can take longer.

Some customers report breathing benefits within 6 days, others after 60. This variability can be attributed to many factors, including the importance of continuous daily use and the reality that some of us constantly think about our lungs while others breathe without much thought.

resB® was also created with smokers and their lung health in mind. Our clinical trials included smokers who developed lung problems such as asthma and COPD. We strongly encourage smokers to try quitting smoking to take control of their lung health.

All of resB® Lung Support’s ingredients are listed on the bottle. You can also read ingredient details on our product page, or direct any specific ingredient questions to our support team atsupport@resbiotic.com.

Customer Reviews