Third Biome
India is facing a widespread gut health challenge. More than 300 million people—about one in four —struggle with chronic digestive issues such as bloating, acidity, IBS, constipation, fatigue, brain fog, and hormonal imbalances. For twenty years, probiotics have been the preferred solution. However, the numbers continue to rise. Why? The reason is simple: we’ve been using the wrong approach. Science has advanced, It's time for India to catch up, and we all need to learn the term "postbiotic."
Third Biome, India's first patented postbiotic brand under Aeobiome Healthcare (DPIIT Registered, 2025), was created to address this gap. This guide introduces postbiotics in depth—explaining what they are, how they function, why they can be more effective than probiotics for many Indians, and how Thirdbiome GTB delivers them with clinical precision.
What Is A Postbiotic? The Scientific Definition
In 2021, the International Scientific Association for Probiotics and Prebiotics (ISAPP) published a landmark consensus statement in Nature Reviews Gastroenterology and Hepatology, defining postbiotics as:“preparation of inanimate microorganisms and/or their components that confers a health benefit on the host”.
To put it simply, a postbiotic is not a living bacterium. It is the beneficial compound that bacteria produce—or the bacteria themselves rendered non-living but still bioactive. It is the output of the fermentation process, not the process itself.
Think of it this way. Probiotics are the factory workers. Prebiotics are their food. Postbiotics are the finished product—delivered directly, without waiting for the factory to run.
Butyrate, a short-chain fatty acid (SCFA) created when good gut bacteria ferment dietary fiber, is the most significant and thoroughly researched postbiotic. Butyrate is the substance that keeps your intestinal wall closed and impermeable, the main source of energy for the cells lining your colon (colonocytes), and the signal that instructs your immune system to remain composed.
Thirdbiome GTB, the hero postbiotic chemical from Third Biome, is a carefully designed delivery system that delivers butyrate precisely where your gut needs it, avoiding the breakdown of stomach acid.
The Three Biotics: Pre, Pro, and Post
Before postbiotics make sense, you need the full picture of the biotic family. Here is a clear comparison:
• Prebiotics—These are dietary fibres and compounds that feed beneficial gut bacteria. Consider the fiber found in whole grains, bananas, onions, and oats. They do not have a direct effect on your gut—they depend entirely on you having healthy bacteria to ferment them. If your microbiome is already disrupted, feeding it more fibre can worsen bloating and gas.
• Probiotics—These are live microorganisms intended to colonise your gut and improve its composition. The challenge: more than 50% of probiotic bacteria are destroyed by stomach acid before they reach the colon. Of those that survive, most are transient—they do not permanently colonise. The clinical evidence for probiotic benefits in humans is inconsistent at best.
• Postbiotics—These are the beneficial metabolites, cell components, or inanimate bacteria that exert direct health effects. They do not need to survive stomach acid because they are not alive. They are heat-stable, shelf-stable, and act directly on gut cells, immune cells, and the gut-brain axis without relying on colonisation.
The postbiotic advantage is not theoretical. It is structural. You are delivering the result, not hoping the process runs smoothly inside a disrupted gut.
How Postbiotics Work in the Body
Understanding the three main ways that postbiotics work is essential to comprehending why they are especially important for gut health in India:
1. Tight Junction Support and Gut Lining Interaction
The gut lining is a single-cell-thick barrier between your digestive tract and your bloodstream. When healthy, it is tightly sealed by protein structures called tight junctions. Butyrate—the postbiotic at the core of Thirdbiome GTB—supplies approximately 70% of the energy requirements for colonocytes (gut lining cells). This lining thins, tight junctions loosen, and the gut becomes "leaky" in the absence of sufficient butyrate, allowing bacterial toxins, partially digested food, and inflammatory signals to reach the bloodstream. Bloating, exhaustion, skin issues, mental fog, and metabolic disturbance are all signs of the ensuing systemic inflammation.
2. Immune Modulation
The gut-associated lymphoid tissue (GALT) contains more than 70% of the immune system. Postbiotics act as signalling molecules that bind to G-protein coupled receptors on immune cells, triggering anti-inflammatory cascades. Specifically, butyrate increases the production of anti-inflammatory cytokines (like IL-10) and decreases the production of pro-inflammatory cytokines (such TNF-alpha and IL-6). Because of this, postbiotics are an effective treatment for diseases like IBS, PCOD, acidity, and metabolic syndrome that have an underlying inflammatory trigger.
3. The Gut-Brain Axis
The gut contains 500 million neurons and produces over 90% of the body's serotonin. Postbiotics have two effects on this system: by stimulating vagus nerve signaling and by entering systemic circulation to reach brain-adjacent tissues. When butyrate supports a healthy gut lining and reduces intestinal inflammation, serotonin production stabilizes, neurotransmitter signaling improves, and the downstream effects—better mood, sharper focus, lower anxiety—follow. This is not a claim about wellness. Neurogastroenterology is a recognized field.
Why Postbiotics Are India's Gut Health Breakthrough
There are particular aspects of gut health in India that make postbiotics not only beneficial but also necessary:
• High antibiotic use: India is one of the top consumers of broad-spectrum antibiotics worldwide. Butyrate-producing gut bacteria can be eliminated by a single course of antibiotics for up to two years, resulting in a persistent SCFA deficit that is difficult for probiotics to treat.
• Heat and supply chain challenges: Probiotics must be refrigerated because they quickly deteriorate above 25°C. Many probiotic products have low live-cell counts by the time they are consumed due to Indian summers, unrefrigerated supply chains, and inconsistent storage conditions.
• Spicy, acidic diets: Chilli-rich Indian diets create a highly acidic gastric environment, which can break down probiotic bacteria before they reach the colon. Thirdbiome GTB uses microencapsulation technology designed to withstand this acidity, ensuring that butyrate is released accurately in the small intestine.
• PCOD epidemic: PCOD affects nearly 1 in 5 urban Indian women. Recent research highlights the role of the estrobolome—the gut bacteria involved in estrogen metabolism—as a key factor in PCOD. Postbiotics help restore gut lining integrity and reduce microbiome imbalance, supporting hormonal regulation in ways that probiotics alone may not achieve.
• Urban professional stress load: Chronic cortisol from work stress directly shrinks microbiome diversity and reduces SCFA production. India's urban professional class—the Bangalore IT worker, the Chennai healthcare professional, the Hyderabad startup founder—carries some of the highest gut stress loads in the world.
Thirdbiome GTB: India’s First Patented Postbiotic
The key ingredient from Third Biome is Thirdbiome GTB (microencapsulated Glycerol Tributyrate). This compound is a natural ester formed from glycerol and butyric acid, acting as a precursor that the body converts into free butyrate within the intestine. However, in its raw form, Thirdbiome GTB presents certain challenges—it is volatile, has an unpleasant smell, and tends to be absorbed too early before reaching the colon.
To overcome these limitations, Third Biome has developed a patented microencapsulation technology. This process encloses the compound within protective microspheres that:
• Resist stomach acid degradation — protecting the active compound through the gastric environment • Dissolve at intestinal pH — releasing butyrate precisely in the small intestine and colon where it is needed
• Eliminate odour and volatility — making the supplement practical and pleasant to use
• Enable shelf stability — no refrigeration required, no cold chain dependency
As a result, this innovation becomes India’s first postbiotic delivery system designed to deliver butyrate effectively to the gut lining with reliable and measurable results. This makes Biome Balance the first SKU in India to carry a genuine postbiotic claim supported by a patent.
What Health Benefits Do Postbiotics Offer?
Clinical studies on postbiotics, especially those based on butyrate, demonstrate advantages in several systems:
•Digestive health: Helps ease bloating, promotes regular bowel movements, and can relieve IBS symptoms. It may also reduce acidity and GERD flare-ups by strengthening the gut lining.
• Immune function: Reduced frequency of illness, help regulate autoimmune and inflammatory responses, and strengthen the gut’s defense against harmful pathogens.
• Metabolic health: enhanced blood glucose control, increased insulin sensitivity, and assistance with weight control via SCFA-mediated metabolic signaling
• Mental health and cognition: Through the gut-brain axis and serotonin pathway support, there is less mental fog, better mood stability, and increased attention.
• Hormonal balance: PCOD, PMS, and perimenopause-related support for estrogen metabolism through the estrobolome.
• Skin health: Can ease inflammatory skin concerns such as acne and eczema that are commonly tied to an unhealthy gut.
• Sleep quality: Helps you fall asleep faster and sleep better by supporting serotonin and melatonin signals that come from the gut.
Are Postbiotics Safe?
Postbiotics offer a stronger safety profile than probiotics. Since they are not live microorganisms, they do not pose a risk of infection—an important concern with probiotic supplements, especially for immunocompromised individuals, infants, and those recovering from surgery. They are generally well tolerated across different age groups and have minimal interaction with most medications.
Thirdbiome GTB is FSSAI-compliant and developed according to clinical standards. The T3B Club’s 30-day cohort program includes medical supervision along with weekly check-ins, ensuring that each member’s experience remains safe, monitored, and effective.
Postbiotics vs Probiotics: A Quick Comparison
Probiotics: Live microorganisms that must survive stomach acid to be effective. Their presence in the gut is often temporary, with inconsistent results. Many require refrigeration and may not be ideal for antibiotic recovery, PCOD, or leaky gut without a well-established microbiome.
Postbiotics: Bioactive compounds that act directly on gut cells without needing to colonize. They are heat-stable, deliver consistent and measurable results, and are safe for immunocompromised individuals. Represent the next advancement in gut health science.
Frequently Asked Questions
Q: What exactly is a postbiotic?
A: A postbiotic is a preparation of inanimate microorganisms or their beneficial metabolic byproducts that confer health benefits. The most studied example is butyrate, a short-chain fatty acid that fuels gut lining cells, reduces inflammation, and supports the gut-brain axis. ThirdBiome delivers butyrate through Thirdbiome GTB , India's first patented postbiotic.
Q: Are postbiotics better than probiotics?
A: For many people—especially those with disrupted gut microbiomes, a history of antibiotic use, PCOD, IBS, or leaky gut—postbiotics are more effective because they act directly on gut cells without needing to survive digestion or colonise the gut. They are also safer, more heat-stable, and better suited to Indian gut health challenges.
Q: How long do postbiotics take to work?
A: Because postbiotics act directly on gut cells, many users notice improvements in bloating, digestion, and energy within 7 to 14 days. The gut lining renews every 3 to 5 days. At 30 days, structural gut lining improvement is measurable. The T3B Club runs on a 30-day cohort model for this reason.
Q: Can I take postbiotics with probiotics?
A: Yes. Postbiotics and probiotics can be complementary. However, postbiotics alone—particularly butyrate-based postbiotics like Thirdbiome GTB—are often sufficient to provide the gut health benefits most people seek.
Q: Where can I get postbiotics in India?
A: Third Biome is India's first patented postbiotic brand. Biome Balance, powered by Thirdbiome GTB, is available through the T3B Club at @thirdbiome.com. Join the waitlist today. Q: Is Third Biome India's only postbiotic brand? A: Third Biome, under Aeobiome Healthcare, is India's first patented postbiotic brand. We are the category creators for postbiotics in India and the only brand delivering Thirdbiome GTB in a clinically designed 30-day protocol.
Q: What does postbiotic mean in Hindi / Tamil?
A: In Hindi, postbiotic can be described as 'aaantriya jeevanu utpad' —the beneficial product produced by gut bacteria. In Tamil, 'kuranai kuzhal kidakarai' refers to the short-chain fatty acids at the core of postbiotic science. Whatever language you think in, the biology is the same: your gut needs postbiotics to heal.
Ready to experience the postbiotic difference? Third Biome's Biome Balance, powered by Thirdbiome GTB, is India's first patented postbiotic capsule—built in Chennai, backed by science, designed for the Indian gut. Join the T3B Club waitlist at https://thirdbiome.com/ and take our free Gut Health Quiz to find your gut health score in 3 minutes.