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.

Asked & Answered

Find the most frequently asked questions below

resB™ targets the gut-lung axis with a combination for clinically studied probiotic strains and bioactive botanicals.

The probiotic strains in resB™ have been clinically studied for their gut, lung, and immune benefits. Curcuma longa (turmeric), Ocimum sanctum (holy basil), and Adhatoda vasica (vasaka) leaf extracts were added for their antioxidant and respiratory supportive properties, as well as their role in supporting a healthy immune response.*

The complete formula has been shown to support lung structure and function in preclinical studies.*

resB® Lung Support contains a unique combination of probiotic strains and botanicals, formulated by physician scientists based on over a decade of research on the gut-lung axis.

The scientists behind ResBiotic® developed and tested probiotic strains independently, as a blend, and in combination with bioactive botanicals to arrive at the optimal formulation for resB® Lung Support.

That formula is precision blended in a cGMP environment by FDA-certified suppliers. It 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 research-backed CFU (Colony Forming Unit) count in every capsule, every time.

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

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

Some of our customers report breathing benefits within 6 days, others after 60. This variability can be attributed to a number of 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.

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.

resB® Lung Support is precision blended 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 research-backed CFU (Colony Forming Unit) count in every capsule, every time.

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!

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 at

Product Details

Some GI discomfort can occur when taking probiotics, but these typically resolve within 2 weeks. Please consult a healthcare professional if symptoms worsen or persist.

If you are pregnant or breastfeeding, we recommend consulting your physician before taking resB® Lung Support.

You can take resB® Lung Support with or without food. If you miss a dose, just take two capsules the next time. The key is consistent daily use. You can read more about that here.

resB® Lung Support is manufactured in GMP-certified and FDA-registered facilities, right here in the USA.

Probiotics are living microorganisms, so we recommend refrigerating resB® Lung Support after opening, and always storing it in a cool, dry place.

That said, third-party stability testing confirms that resB® can be stored at room temperature (77 degrees farenheit) for months without loss of potency. If you accidentally leave resB® out on the counter and even if it sits on your porch over the weekend, rest assured that resB® will maintain its 15B CFU per capsule.

resB® Lung Support contains live probiotic bacteria strains that have been tested for survivability. Key tests include acid tolerance, bile salt tolerance, pepsin resistance, pancreatin resistance, and adhesion to the human intestinal mucosa.

Translation: We made sure they'll stay alive, and get where they need to go.

While it's not required to take a prebiotic with resB® Lung Support, many people find prebiotics beneficial. You can learn more about this topic, including common foods that contain high quantities of prebiotic fiber, in this blog post.

Shipping and Fulfillment Questions

No promo code necessary. We offer free standard shipping on every order!

The turnaround time for free standard shipping is within 3-5 business days. You may purchase expedited shipping if you need your order to arrive in 2 business days. If you are setting up a subscription order and need express shipping please contact or give us a call at 667.225.3648.

Keep in mind: packages can be marked delivered 24-48 hours before they are physically delivered. If you do not receive your package within 48 hours of being marked delivered, you can file a claim here or contact our Customer Experience Team at customers.

We will never make you pay for something you never received! You can add Route Package Protection to your order starting at $1 to ensure safe and on-time deliveries. Please contact our support team at with any questions!


We currently only ship domestically within the U.S. International shipping is not available at this time. Check back soon!

While in transit to your location, your product may undergo fluctuations in temperature. This is perfectly normal! Third-party stability testing confirms that resB® can be stored at room temperature for up to 3 months without loss of potency.

Payment Questions

ResBiotic prides itself in following all tax laws. Certain municipalities require sales tax to be charged to customers. If you live in one of the locations applicable for sales tax on ResBiotic sales, our system will automatically associate the correct tax. If you are not charged sales tax, be sure to check with your state about Use Tax laws.

We offer multiple payment avenues including all major credit cards, Apple Pay, Facebook Pay, and Google Pay. 

Pro Tip: Use ShopPay to set yourself up for speedy and secure checkouts. When you enter your information with ShopPay, it will be saved for future use. ShopPay will text you a security code to make sure you are the one checking out every time. 

Last but not least, ShopPay gives you the option to “pay later”  through Affirm. This way you don’t have to pay upfront and instead your order will be divided into 4 interest-free installments. Please note that this option is not available for subscription orders.

Setting up a subscription not only saves you money but is an easy way to make sure you are staying consistent with your resB®. We offer monthly and quarterly subscriptions. You can access your account at any time to pause, skip, or cancel your subscription.

We do not store credit card information in our databases. Subscription customers will save their payment details to enable automated billing through Recharge. Customers may also utilize Paypal or ShopPay services that have their own terms and conditions concerning payment details.