Our gut is our body's most immunologically active organ, communicating with different organ systems. What we consume in our gut acts as the entry point to several systemic connections. The gut-X axis denotes the axis or connections by which the gut communicates with various systemic organs or functions. The X could stand for the lungs, such as in the gut-lung axis, the heart in the gut-heart axis, the brain in the gut-brain axis, and so forth.

Our powerful formulas were created by our founder, Dr. Vivek Lal, and his team of double-board-certified, practicing physician-scientists. There's a lot of brainpower behind these powerful formulas. While it should be commonplace, it's rare to have even one physician formulating a supplement, let alone a team. At res, we believe that science speaks for itself, as do the results of physician-crafted supplements!

While people often report gut health benefits as early as their first week, systemic benefits can take longer. Some community members report breathing, circulatory, and energy benefits within six days, while others after 60-90 days. 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 how our bodies are feeling. In contrast, others go about their day without much thought. Our physicians recommend consistent use for 3-4 months.

Yes! The shaker bottle is dishwasher-friendly and BHA-free. 

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

We take great care and responsibility to deliver all-natural pre/pro/post-biotics! 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’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, supplement formulation, and third-party stability testing. 

Yes, we do offer free standard shipping on US-based orders over $49, and we ship to PO boxes.

The turnaround time for standard shipping is within 3-5 business days. Shipping timelines are estimates and may be impacted by weather-related delays outside our control. 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 require express shipping, please contact support@resbiotic.com or call us at +1 667-295-7372.

Keep in mind that 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 support@resbiotic.com

We will never make you pay for something you never received! You have 14 days to report a missing package to us. Please contact our support team at support@resbiotic.com with any questions!

We do ship internationally with certain exclusions as per our Terms of Service (section 13)! Your shipment should arrive within 30 days. If it hasn't please let us know! Alternatively, you can order our supplements via Amazon USA—click here! Please note that you must go to Amazon’s US marketplace and select international shipping. It will not show up on your local marketplace. Let us know if you have any issues or have other questions. We’re here to help!

While in transit to your location, your supplement may undergo fluctuations in temperature. This is perfectly normal! Third-party stability testing confirms that our pre/pro/post-biotics can be stored at room temperature for up to several months without loss of potency. Remember that if you accidentally leave your supplement out on the counter or are taking it on a long flight, rest assured that they will maintain its high potency and stability.

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

Exciting news - we’ve partnered with TrueMed to allow you to use your Health Savings Account (HSA) or Flexible Spending Account (FSA). This means you can buy our supplements with pre-tax dollars, resulting in 30-40% net savings.

The process is simple - we’ll send you reimbursement instructions right after payment.

1. Get Pre-Qualified on your item's supplement page by selecting the "Get Pre-Qualified" link.
2. If TrueMed determines that res supplements can help prevent or reverse a health condition you care about (making it eligible for HSA/FSA), they will send you a Letter of Medical Necessity (LMN).
3. Once approved, submit the receipts for this and all future ResBiotic orders with your LMN to your HSA/FSA provider for reimbursement. TrueMed will send instructions for getting reimbursed, and their customer support team will be available to assist. 

We also offer ShopPay. 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 offers the option to “pay later”  through Affirm. This way, you don’t have to pay upfront; your order will be divided into four interest-free installments. Please note that this option is not available for subscription orders.

Setting up a subscription saves you money and is an easy way to ensure you are staying consistent with your pre/pro/post-biotic routine for best health results. We offer monthly and quarterly subscriptions. To modify your subscription, click here, or please contact support@resbiotic.com

Benefits:

• Early access to new supplements
• Always in stock
• Doorstep delivery 
• Up to 60% off with exclusive discounts
• Cancel/pause/skip your order at any time

Need to modify your subscription? No problem! Click here or email support@resbiotic.com.

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

resB Lung Support Probiotic is a top physician-formulated supplement for continuous respiratory care. Customers use resB Lung Support Probiotic for respiratory structure and function support, cough relief, lung detox, and mucus relief.

While there are no known contraindications with resB Lung Support Probiotic and any over-the-counter or prescription medications, we encourage you to consult your primary care physician before adding new supplements to your routine.

Additionally, if you are taking an antibiotic, take resB Lung Support Probiotic 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 Lung Support Probiotic before they have a chance to work!

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

The formula is processed precisely 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.

The resB Lung Support Probiotic formula is 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 supplements have been extensively studied in many settings, including physician-supervised preclinical 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.

Yes, you can, and in fact, we encourage and recommend it! resB Lung Support Probiotic is focused on probiotics and bioactive botanicals that support gut, immune, and lung health.* It has proprietary beneficial lactobacillus probiotics that work well with the prebiotics in resG prebeet. resG prebeet increases Akkermansia and Bifidobacterium, the bacteria known to be the powerhouses of metabolic health and longevity.* Our lungs, respiration, energy, heart, and gut health are all connected, so why not support that connection? When in doubt, always consult your primary care physician.

This probiotic lung support was 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.

resG prebeet is for anyone looking to support gut health, reduce gut discomfort (bloating, gas, occasional constipation), and optimize their weight support journey, especially those using GLP-1 injections.*

GLP-1 injections can cause bloating, gas, and digestive discomfort. resG prebeet helps by reducing these symptoms, supporting gut health, and complementing your prescribed treatment for better tolerance.*

Mix your daily resG prebeet into 8-12 oz of cold water ( preferred beverage) and shake well before drinking in the morning, afternoon, or before your workout routine. You can also add it to a smoothie or yogurt or add mix-ins like lemon juice, a dash of tart cherry juice, or your favorite electrolyte powder. Use 1-2 times daily and store in a cool, dry place.

Many users experience improved digestion and reduced bloating within the first few weeks, while full gut health benefits develop with consistent daily use over 90 days.*

No! resG prebeet provides natural, sustained energy through its nutrient-rich formula, without relying on stimulants like caffeine.*

They are! Clinically proven resG prebeet data can be found by clicking here.

We use methylated B12 (methylcobalamin) for a more active form of B12 (compared to the synthetic form of cyanocobalamin), which is easily absorbed by the body to support body function.

Yes! Our clinically studied prebiotic ingredient is a low FODMAP-approved supplement through Monash, the authority on low FODMAP diets.

No, it’s caffeine-free! We believe optimal results come from fueling your body with whole, clean ingredients. resG prebeet is not sweetened with sugar but with mixed berry flavors and natural stevia extract.

The resG prebeet Daily Prebiotic & Beets taste profile is formulated with the sweetness of mixed berries to mitigate any potential overpowering taste of beets. To experience the best of resG, we recommend blending your serving into cold water to ensure a smooth experience!

resM is a probiotic (heat-inactivated) supplement, aka a postbiotic. It’s designed for adults seeking natural weight loss, whether you're starting your weight support journey, supplementing a GLP-1 prescriptions injection, or transitioning off medications.¹ Nevertheless, We always recommend consulting your doctor before adding anything to your regimen. No supplement can claim to treat, cure or prevent any diseases.* resM GLP-1 Postbiotic does not contain synthetic GLP-1 and is not a GLP-1 agonist prescription drug.

Many in our community use resM for weight support, healthy blood sugar balance already in normal range, and curbing cravings alongside their prescribed GLP-1 treatments or to maintain GLP-1 results.* We always recommend consulting your doctor before adding anything to your regimen.

resM is formulated to support your weight, manage hunger naturally and maintain healthy sugar levels already in normal range. resM GLP-1 Postbiotic does not contain synthetic GLP-1 and is not a GLP-1 agonist prescription drug. No supplement can claim to cure, prevent or diagnose any disease.*

That’s the Fenugreek! This natural ingredient has a strong aroma, a sign of freshness and potency. If the scent is strong, store your bottle in a cool, dry place with the lid sealed.

While resM is based on metabolic research, no supplement can treat, cure, or prevent diseases. resM helps regulate appetite, balance healthy blood sugar already in normal range, and reduce cravings, which may assist in achieving your health goal.* We recommend consulting your doctor before starting any new supplement.

Some people notice gut health benefits within the first month, but metabolic effects take time and consistency. For best results, use resM daily for at least 90 days.*

resW is designed for women who experience those unpleasant symptoms that can occur during hormonal shift, like hot flashes, night sweats, mood changes, or sleep disturbances.*

Individual experiences may vary, but many women report feeling more balanced within 2–6 weeks.* For best results, daily consistency for as little as 90 days is recommended.*

resW is generally safe to take with most vitamins and supplements.* However, consult your healthcare provider if you're on prescription medications or managing a health condition. As resW supports the Gut-Hormone connection, resM supports your metabolism, resG supports digestive health, and resB focuses on lung and immune health. Together, they work synergistically to enhance whole-body health.*

resW is specifically designed for perimenopausal support, the transitional period before menopause, but is also a great supplement for any woman experiencing shifts in energy, mood, and hormones.  Many women continue using it post-menopause for ongoing support*

resW is hormone-free and designed to be gentle, but we always recommend checking with your healthcare provider if you’re currently taking hormone therapy, antidepressants, or any prescription medication.

Take 2 capsules once daily, with or without food - whenever it fits best into your routine. Consistency is key for optimal results!

resO is designed for adults looking to restore joint flexibility, comfort, and bone strength, whether you're managing stiffness, bouncing back after physical activity, or just want to move with more confidence. It's great for women and men in their 30s–50s, especially those who sit often, work on their feet, or stay active.*

While resO cannot treat or cure any condition, it is formulated with well-researched ingredients shown to support joint function, mobility, and daily comfort.* For best results, we recommend consistent daily use for as little as 90 days.

While yes, the formula is considered generally safe, we do recommend that you always check with your healthcare provider before adding any supplement to your routine, especially if you're taking prescription medications!

Absolutely. resO was designed for both men and women!

resO contains shellfish-derived glucosamine and is not vegan. It is free from dairy, gluten, soy, and artificial fillers. Always check the label if you have allergies!

Some people report feeling a difference in joint comfort and flexibility within 2-4 weeks. For others, it may take up to 8-12 weeks of consistent daily use. Results vary based on lifestyle, diet, and individual biology! We recommend taking it daily for as little as 90 days to see the full benefits.

You receive a kit in the mail with a lab-certified sampling swab. You collect a small sample from used tissue paper – no gloves or direct handling. Seal it in the included container, drop it in a mailbox using the prepaid envelope, and wait for your report.

Most reports are ready 3-4 weeks after your sample reaches the lab. You will get an email when it is live.

No. The Gut Health Test is a wellness product. It is not intended to diagnose, treat, cure, or prevent any disease.* If your report shows markers that warrant clinical follow-up, we will recommend you speak with your primary-care physician.

Yes. Your sample is processed in a CLIA-certified lab. Your results are stored securely and are never sold to third parties.

No prescription required. Order directly.

Yes. The Gut Health Test is HSA/FSA eligible. Customers save an average of 30% at checkout.

Clinical stool tests detect specific pathogens for medical diagnosis. The resbiotic Gut Health test powered by Tiny Health uses whole-genome sequencing to map the full picture of your microbiome, including the bacteria that support your lungs, brain, hormones, and joints through the Gut-X Axis. It is a wellness tool, not a replacement for medical testing.

Adults who want to understand the state of their gut and how it may be connected to symptoms they feel elsewhere. Not intended for children under 18 or for pregnant/breastfeeding individuals without physician guidance.