+ Supports digestive regularity and the gut lining⁺
+ Combines prebiotics, postbiotics and L-glutamine
+ Low FODMAP, gentle by design, vegan
+ Easily dissolves in any hot or cold drink
+ Made for consistent, everyday gut support
Benefits
Combines prebiotics, postbiotics and L-glutamine
Made for consistent, everyday gut support⁺
Gentle formula for daily harmony⁺
Supports digestive regularity and the gut lining⁺
Low FODMAP, gentle by design, vegan
Why Take It
Your gut isn’t just a digestive organ – it’s a dynamic ecosystem, nurtured by nutrients, influenced by daily habits, and challenged by the demands of modern living. True Biome is carefully crafted with PHGG fiber to feed beneficial microbes, L-glutamine – an amino acid and building block of the gut lining – and postbiotics to support your unique microbial balance.⁺
+ A balanced gut supports whole-body health*
+ Gut diversity is key for microbial balance and harmony*
+ The gut lining acts as your body’s internal protective barrier*
+ Prebiotics feed beneficial microbes, helping them thrive**
+ PHGG is a gentle, effective prebiotic fiber for daily gut support**
+ Postbiotics are natural compounds produced by microbes that help maintain balance**
How to Use
Our True Biome powder is neutral in taste, making it easy to add to water or any hot or cold drink of your choice.
For optimal benefits, we recommend using it daily and consistently.
Suggested daily use: We recommend 2 heaped teaspoons (6 g) per day. Mix with 8-10 oz (250 ml) of your chosen drink and stir well. If you have a sensitive digestive system or are new to these ingredients, we suggest starting with half a serving (3 g) for the first few days, then gradually increasing to a full serving (6 g) as your body adjusts.
Serving size: 2 tsp (6 g)
Servings per container: 30 servings per 180 g jar
Ingredients
Ingredients
PHGG (Partially Hydrolyzed Guar Gum)
L-glutamine
Lactobacillus plantarum L-137 HK
Nutrition
Nutrition
per 6g
ENERGY
61kJ/15kcal
FAT
0g
of which saturates
0g
Carbohydrates
4.7g
of which sugars
0.2g
Protein
1.3g
Fiber
4.5g
Salt
0g
PHGG
5g
L-Glutamine
0.95g
Lactobacillus plantarum L-137 HK
50mg
Cautionary advice: If pregnant or breastfeeding please consult with your GP or midwife. If you are taking medication or under medical supervision, consult your doctor before taking any food supplement.
Whole Body Benefits
Finest Ingredients
Free Shipping Available
Responsibly Sourced
30 Day Confidence Guarantee
Ingredients explained
PHGG
+ PHGG is a soluble prebiotic fiber. Prebiotics feed beneficial gut bacteria and encourage the production of short-chain fatty acids - compounds that help maintain a healthy gut environment and support gut barrier function.**
+ PHGG is particularly noteworthy for being low-FODMAP and well tolerated, even by those with sensitive digestion. Prebiotic fiber may help support healthy bowel habits and digestive comfort, contributing to a more stable environment for microbial balance.**
+ With over 100 clinical studies supporting its use, PHGG reflects our belief in long-term nourishment - feeding the inner terrain and encouraging balance over time.
L-Glutamine
+ L-glutamine is an amino acid that helps support the strength and integrity of the gut lining - your body’s internal barrier.**
+ It serves as a key fuel source for intestinal cells and becomes particularly important during times of physical stress, intense exercise, or when the body is run down - moments when the gut may need extra support.**
+ Naturally present in many protein-rich foods, L-glutamine plays a role in various cellular processes and is a well-studied nutrient in the context of gut function and resilience.**
Lactobacillus plantarum L-137 HK
+ The heat-treated postbiotic strain Lactobacillus plantarum L-137 is derived from the traditional Japanese fermented food narezushi. Postbiotics are the beneficial end products typically created by probiotics in the gut. Unlike live probiotics, HK L-137 is shelf-stable, does not require refrigeration, and is well tolerated by those with microbiome sensitivity.
+ It has been widely studied in clinical research exploring its role in supporting immune health and microbial balance.**
+ This gentle yet powerful postbiotic complements True Biome’s inclusive approach to long-term gut care.
+ Utilizes natural electrolytes within coconut water
+ Hydrates and revitalizes body and mind⁺
+ Added minerals for daily energy⁺
+ No artificial flavors or sweeteners
+ Supports skin elasticity, energy, joints and hair⁺
+ Type I Hydrolyzed Bovine Collagen
+ EU sourced, free from growth hormones + antibiotics⁺
+ Neutral taste and odor, dissolves easily
“Transparency, emphasis on quality and commitment to research sets Ancient and Brave apart as a wellness company consumers can trust to provide quality products that support the body throughout all seasons of life.”
Erin Ogden MDA, RDN, LDN
Dietitian Nutritionist, Ancient + Brave US
“I’m so impressed by the integrity of Ancient + Brave, their formulations are pure, science-backed, and rooted in ancient wisdom. They truly embody what it means to nourish both body and soul.”
Mona Sharma
Nutritionist
“When you honor and restore your internal ecosystem, you naturally begin to care for the world around you with greater awareness and compassion.”
Madison Miller, M.S.
Holistic Nutritionist, Ancient + Brave US
"What I appreciate about Ancient + Brave is their focus on evidence - not just marketing. The clinical research is solid, the formulations are well thought out, and it’s a standard I feel good standing behind."
Dr. Ariana Medizade
PharmD, RPh, FNC
"I love that Ancient + Brave pairs integrity with efficacy. Products that work and taste neutral that I can trust for myself and my clients."
Shauna Falisa
Celebrity Chef & Nutritionist
“We are constantly expanding our research in nutrition and ingredients to ensure we are delivering the highest quality products that are pure, potent, and efficacious.”
Jo Woodhurst
VP of Nutrition & Education, Ancient + Brave
FAQs
WHY DOES TRUE BIOME NOT CONTAIN A PROBIOTIC?
Our gut is a complex ecosystem made up of millions of microbes, each playing a unique role in your health. This microbial community lives protected within your gut lining, which also contains around 70% of your immune cells. To support gut and digestive health, it’s essential to keep this ecosystem diverse, balanced, and well nourished.
However, modern lifestyle factors - such as stress, diet, medications, and environmental exposures can influence both your gut microbes and gut lining. Probiotics are live beneficial bacteria that can help increase the number of helpful microbes in the gut.
This is why including probiotic-rich foods in your diet—such as live yogurt, sauerkraut, kefir, and kimchi can naturally introduce beneficial bacteria. Probiotic supplements can also play a role, particularly after antibiotic use, when microbial diversity may be reduced. However, the strains and doses need to be well matched to individual needs. Some probiotic products contain very high doses, which can sometimes overwhelm or disrupt the gut’s delicate balance.
Without personalized guidance, choosing the right probiotic supplement can be confusing and may not deliver the best results. That’s why True Biome takes a different, simpler approach. Instead of adding live bacteria, it focuses on nourishing and supporting the beneficial microbes you already have, as well as strengthening and protecting the gut lining, with a carefully selected combination of:
• PHGG (Partially Hydrolyzed Guar Gum): a gentle prebiotic fiber that feeds and encourages the growth of your existing beneficial bacteria** • L-Glutamine: an amino acid that helps maintain and support the gut lining** • HK L-137 (heat-killed Lacticaseibacillus paracasei): a clinically studied postbiotic that supports immune health and strengthens gut barrier function**
True Biome helps nurture your delicate inner ecosystem and supports gut resilience - without the complexity of selecting probiotic strains.⁺
If your healthcare provider has recommended a specific probiotic or you have particular concerns, we encourage you to work closely with them to find the best solution for your individual needs.
CAN I ADD THIS TO HOT DRINKS AS WELL AS COLD?
Yes. All of these ingredients are heat stable, so you can enjoy True Biome in a hot or cold drink. Simply add 6 g to a drink of your choice.
ARE THERE ANY SIDE EFFECTS?
True Biome is designed to be safe, gentle, and well tolerated by most people.* If you have any concerns or underlying health conditions, we recommend consulting with a healthcare professional before adding any new supplement to your routine.
WHAT IS THE BEST TIME TO TAKE TRUE BIOME?
There isn’t a specific ‘ideal’ time to take True Biome supported by strong evidence. The key is to take it consistently every day to ensure your body receives steady support.* We recommend choosing a time that fits naturally into your daily routine - whether that’s morning, afternoon, or evening - and pairing it with a regular habit like breakfast. This helps make taking True Biome an easy and consistent part of your day.⁺ Consistency is what matters most for maximising the benefits of True Biome and supporting your gut health over time.*
CAN I TAKE TRUE BIOME WITH OTHER PRODUCTS OR SUPPLEMENTS?
Yes, absolutely. True Biome can be enjoyed alongside any of our products. It pairs beautifully with True or Wild Collagen to create a complete gut-care ritual.⁺ Collagen supports the integrity and repair of your gut lining and connective tissue.⁺ Our products are designed to work synergistically to nurture your digestive system and support whole-body wellbeing.*
CAN I TAKE TRUE BIOME IF I AM PREGNANT OR BREASTFEEDING?
While the ingredients in True Biome are generally well tolerated, they haven’t been specifically studied for use during pregnancy or breastfeeding.
As a precaution, we recommend speaking with your healthcare professional before introducing any new supplements during this time.
I TAKE MEDICATIONS, CAN I TAKE TRUE BIOME ALONGSIDE?
If you are taking medications, we recommend speaking with your healthcare provider before adding any new supplement to your routine, to ensure it’s appropriate for your individual needs.
True Biome is formulated to be gentle and generally well tolerated.⁺
However, because it contains PHGG (a prebiotic fiber), we advise taking it at least 1–2 hours away from medications where possible, as fiber can sometimes affect absorption.
Always follow professional guidance for your specific circumstances.
A closer look
Tend to your inner terrain
Like any of nature’s sacred ecosystems, your gut depends on rich diversity and tender care. We feed the soil, protect the roots, and honor nature’s ancient wisdom. True Biome works to gently support balance in your inner terrain, helping your whole body feel nourished from the ground up.⁺
Harmony starts within
Your gut is not just digestion - it’s a central hub that influences your immune system, brain connection, hormonal rhythm, and even the appearance of your skin.⁺ True Biome is designed to nourish this inner center, supporting natural harmony that flows outward and helps you feel your best with quiet, powerful care.⁺
From stripped soil to fertile ground
A thriving gut is a fertile landscape, alive with vibrant diversity and deep resilience. Yet modern life - with its stress, processed foods, and environmental stressors - can diminish this richness. True Biome invites daily care, helping to clear what no longer serves, nurture the terrain, and support a balanced gut environment over time⁺
Remembering the roots
Long before modern science caught up, ancient wisdom recognized the gut as a source of strength. Ayurveda called it agni, the fire of life. Traditional Chinese Medicine viewed the gut-spleen system as central to Qi (life energy). Hippocrates spoke of wellbeing beginning in the gut. True Biome honors this timeless perspective, supporting balance at the root where vitality has always begun.⁺
Rethinking gut health
True Biome takes a modern approach to gut health with three potent allies - prebiotics, postbiotics, and amino acids.⁺ A refined, effective formula that works with what’s already within, supporting your gut microbiome, encouraging resilience, and helping maintain whole-body wellbeing from the inside out.⁺
Shipping
Shipping Costs
USA
For orders over $70, delivery is free. For orders under $70, delivery is $6.95.
We stand behind our products. If you're not completely satisfied with your purchase, you may return it within 30 days of delivery for a full refund of the purchase price.
Kapoor, M. P., Yamaguchi, H., Ishida, H., Mizutani, Y., Timm, D., & Abe, A. (2023). The effects of prebiotic partially hydrolyzed guar gum on skin hydration: A randomized, open-label, parallel, controlled study in healthy humans. Journal of Functional Foods, 103, 105494. https://doi.org/10.1016/j.jff.2023.105494
Salem, I., Ramser, A., Isham, N., & Ghannoum, M. A. (2018). The gut microbiome as a major regulator of the gut–skin axis. Frontiers in Microbiology, 9, 1459. https://doi.org/10.3389/fmicb.2018.01459
Hou, K., Wu, Z. X., Chen, X. Y., et al. (2022). Microbiota in health and diseases. Signal Transduction and Targeted Therapy, 7, 135. https://doi.org/10.1038/s41392-022-00974-4
Heiss, C. N., & Olofsson, L. E. (2018). Gut microbiota-dependent modulation of energy metabolism. Journal of Innate Immunity, 10(3), 163–171. https://doi.org/10.1159/000481519
Abe, A., Morishima, S., Kapoor, M. P., Inoue, R., Tsukahara, T., Naito, Y., & Ozeki, M. (2023). Partially hydrolyzed guar gum is associated with improvement in gut health, sleep, and motivation among healthy subjects. Journal of Clinical Biochemistry and Nutrition, 72(2), 189–197. https://doi.org/10.3164/jcbn.22-75
Appleton, J. (2018). The gut–brain axis: Influence of microbiota on mood and mental health. Integrative Medicine (Encinitas, Calif.), 17(4), 28–32.
Sakai, S., Kamada, Y., Takano, H., Ichikawa, M., Kurimoto, M., Katsuyama, H. K., Nishihira, J., & Sasaki, M. (2022). Continuous partially hydrolyzed guar gum intake reduces cold-like symptoms: A randomized, placebo-controlled, double-blinded trial in healthy adults. European Review for Medical and Pharmacological Sciences, 26(14), 5154–5163. https://doi.org/10.26355/eurrev_202207_29304
Siddiqui, R., Makhlouf, Z., Alharbi, A. M., Alfahemi, H., & Khan, N. A. (2022). The gut microbiome and female health. Biology, 11(11), 1683. https://doi.org/10.3390/biology11111683
Perna, S., Alalwan, T. A., Alaali, Z., Alnashaba, T., Gasparri, C., Infantino, V., Hammad, L., Riva, A., Petrangolini, G., Allegrini, P., & Rondanelli, M. (2019). The role of glutamine in the complex interaction between gut microbiota and health: A narrative review. International Journal of Molecular Sciences, 20(20), 5232. https://doi.org/10.3390/ijms20205232
Shu, X., Yu, T., Kang, K., & Zhao, J. (2016). Effects of glutamine on markers of intestinal inflammatory response and mucosal permeability in abdominal surgery patients: A meta-analysis. Experimental and Therapeutic Medicine, 12, 3499–3506. https://doi.org/10.3892/etm.2016.3799
Coqueiro, A. Y., Rogero, M. M., & Tirapegui, J. (2019). Glutamine as an anti-fatigue amino acid in sports nutrition. Nutrients, 11(4), 863. https://doi.org/10.3390/nu11040863
Abbasi, F., Haghighat Lari, M. M., Khosravi, G. R., Mansouri, E., Payandeh, N., & Milajerdi, A. (2024). A systematic review and meta-analysis of clinical trials on the effects of glutamine supplementation on gut permeability in adults. Amino Acids, 56(1), 60. https://doi.org/10.1007/s00726-024-03420-7
Wang, B., Wu, G., Zhou, Z., Dai, Z., Sun, Y., Ji, Y., Li, W., Wang, W., Liu, C., Han, F., & Wu, Z. (2015). Glutamine and intestinal barrier function. Amino Acids, 47(10), 2143–2154. https://doi.org/10.1007/s00726-014-1773-4
Kapoor, M., Koido, M., Kawaguchi, M., Timm, D., & Ozeki, M. (2020). A randomized, double-blind, placebo-controlled, crossover clinical trial of partially hydrolyzed guar gum dietary fiber for the improved gut microbiome in healthy athletes. Current Developments in Nutrition, 4(Suppl 2), 1568. https://doi.org/10.1093/cdn/nzaa062_025
Edelman, M., Wang, Q., Ahnen, R., & Slavin, J. (2024). The dose response effects of partially hydrolyzed guar gum on gut microbiome of healthy adults. Applied Microbiology, 4(2), 720–730. https://doi.org/10.3390/applmicrobiol4020049
Reider, S. J., Moosmang, S., Tragust, J., Trgovec-Greif, L., Tragust, S., Perschy, L., Przysiecki, N., Sturm, S., Tilg, H., Stuppner, H., Rattei, T., & Moschen, A. R. (2020). Prebiotic effects of partially hydrolyzed guar gum on the composition and function of the human microbiota: Results from the PAGODA trial. Nutrients, 12(5), 1257. https://doi.org/10.3390/nu12051257
Yasukawa, Z., Inoue, R., Ozeki, M., Okubo, T., Takagi, T., Honda, A., & Naito, Y. (2019). Effect of repeated consumption of partially hydrolyzed guar gum on fecal characteristics and gut microbiota: A randomized, double-blind, placebo-controlled, and parallel-group clinical trial. Nutrients, 11(9), 2170. https://doi.org/10.3390/nu11092170
Oral intake of heat-killed Lactobacillus plantarum L-137 decreases the incidence of upper respiratory tract infection in healthy subjects with high levels of psychological stress. (2014). Journal of Nutritional Science, 3, e44. https://doi.org/10.1017/jns.2014.13
Yoshitake, R., Nakai, H., Ebina, M., Kawasaki, K., Murosaki, S., & Hirose, Y. (2022). Beneficial effect of heat-killed Lactiplantibacillus plantarum L-137 on skin functions in healthy participants: A randomized, placebo-controlled, double-blind study. Frontiers in Medicine, 9, 912280. https://doi.org/10.3389/fmed.2022.912280
Nakai, H., Murosaki, S., Yamamoto, Y., Furutani, M., Matsuoka, R., & Hirose, Y. (2021). Safety and efficacy of using heat-killed Lactobacillus plantarum L-137: High-dose and long-term use effects on immune-related safety and intestinal bacterial flora. Journal of Immunotoxicology, 18(1), 127–135. https://doi.org/10.1080/1547691X.2021.1979698
Tanaka, Y., Hirose, Y., Yamamoto, Y., Yoshikai, Y., & Murosaki, S. (2020). Daily intake of heat-killed Lactobacillus plantarum L-137 improves inflammation and lipid metabolism in overweight healthy adults: A randomized-controlled trial. European Journal of Nutrition, 59(6), 2641–2649. https://doi.org/10.1007/s00394-019-02112-3
Afzaal, M., Saeed, F., Shah, Y. A., Hussain, M., Rabail, R., Socol, C. T., Hassoun, A., Pateiro, M., Lorenzo, J. M., Rusu, A. V., & Aadil, R. M. (2022). Human gut microbiota in health and disease: Unveiling the relationship. Frontiers in Microbiology, 13, 999001. https://doi.org/10.3389/fmicb.2022.999001
de Vos, W. M., Tilg, H., Van Hul, M., et al. (2022). Gut microbiome and health: Mechanistic insights. Gut, 71, 1020–1032.
Zhang, Y. J., Li, S., Gan, R. Y., Zhou, T., Xu, D. P., & Li, H. B. (2015). Impacts of gut bacteria on human health and diseases. International Journal of Molecular Sciences, 16(4), 7493–7519. https://doi.org/10.3390/ijms16047493
Shreiner, A. B., Kao, J. Y., & Young, V. B. (2015). The gut microbiome in health and in disease. Current Opinion in Gastroenterology, 31(1), 69–75. https://doi.org/10.1097/MOG.0000000000000139
Rondinella, D., Raoul, P. C., Valeriani, E., Venturini, I., Cintoni, M., Severino, A., Galli, F. S., Mora, V., Mele, M. C., Cammarota, G., Gasbarrini, A., Rinninella, E., & Ianiro, G. (2025). The detrimental impact of ultra-processed foods on the human gut microbiome and gut barrier. Nutrients, 17(5), 859. https://doi.org/10.3390/nu17050859
Zhou, J., & Ho, V. (2023). Role of baseline gut microbiota on response to fiber intervention in individuals with irritable bowel syndrome. Nutrients, 15(22), 4786. https://doi.org/10.3390/nu15224786
Watanabe, M., Nakai, H., Ohara, T., et al. (2024). Beneficial effect of heat-killed Lactiplantibacillus plantarum L-137 on intestinal barrier function of rat small intestinal epithelial cells. Scientific Reports, 14, 12319. https://doi.org/10.1038/s41598-024-62657-0
Yoshitake, R., Hirose, Y., Murosaki, S., & Matsuzaki, G. (2021). Heat-killed Lactobacillus plantarum L-137 attenuates obesity and associated metabolic abnormalities in C57BL/6J mice on a high-fat diet. Bioscience of Microbiota, Food and Health, 40(2), 84–91. https://doi.org/10.12938/bmfh.2020-040
Wong, W.‑Y., Chan, B. D., Cho, P.‑T., Leung, T.‑W., & Tai, W. C.‑S. (2024). Beneficial and immunomodulatory effects of heat-killed Lactobacillus plantarum L-137 in normal and acute colitis mice. Journal of Functional Foods, 116, 106167. https://doi.org/10.1016/j.jff.2024.106167
Zhou, Q., Verne, M. L., Fields, J. Z., Lefante, J. J., Basra, S., Salameh, H., & Verne, G. N. (2019). Randomised placebo-controlled trial of dietary glutamine supplements for postinfectious irritable bowel syndrome. Gut, 68(6), 996–1002. https://doi.org/10.1136/gutjnl-2017-315136
Abe, A., Kapoor, M. P., Morishima, S., Ozeki, M., Sato, N., Takara, T., & Naito, Y. (2024). Effectiveness of partially hydrolyzed guar gum on cognitive function and sleep efficiency in healthy elderly subjects in a randomized, double-blind, placebo-controlled, and parallel-group study. Nutrients, 16(8), 1211. https://doi.org/10.3390/nu16081211
Deters, B. J., & Saleem, M. (2021). The role of glutamine in supporting gut health and neuropsychiatric factors. Food Science and Human Wellness, 10(2), 149–154. https://doi.org/10.1016/j.fshw.2021.02.003
Braga, J. D., Thongngam, M., & Kumrungsee, T. (2024). Gamma-aminobutyric acid as a potential postbiotic mediator in the gut–brain axis. npj Science of Food, 8, 16. https://doi.org/10.1038/s41538-024-00253-2
Mohajeri, M. H., La Fata, G., Steinert, R. E., & Weber, P. (2018). Relationship between the gut microbiome and brain function. Nutrition Reviews, 76(7), 481–496. https://doi.org/10.1093/nutrit/nuy009
The gut-body connection: how your gut health shapes your skin, hormones, mood and more
It's time to celebrate the gut for all it does. Your gut works tirelessly, and on far more than just breaking down your lunch. It quietly shapes almost every part of your body - from your energy and mood to your skin, immunity, and hormones. Find out more.