The health of the intestinal tract — particularly the large intestine — has become one of the most talked-about topics in both mainstream and natural medicine over the past decade, and rightly so. Research into the gut microbiome has transformed our understanding of how intestinal health connects to immunity, mental health, inflammation, and even metabolic function. In the western herbal tradition, we have always treated the gut as central to overall health. Herbs like slippery elm, marshmallow, psyllium, and chamomile have been used for centuries to soothe, repair, and regulate the intestines. The articles in this section bring together traditional herbal knowledge and contemporary gut health research.
Whether you are dealing with irritable bowel syndrome, chronic constipation, inflammatory bowel conditions, or simply want to support a healthy gut microbiome, the plant world has much to offer. These articles are intended to inform and inspire — please work with a healthcare professional for any ongoing or serious intestinal complaint.
Frequently Asked Questions About Intestinal Health and Herbal Medicine
What herbs help with irritable bowel syndrome (IBS)?
IBS is a functional disorder with both physical and psychological components. Peppermint oil capsules are among the most well-researched treatments for IBS, particularly for cramping and spasm. Slippery elm is soothing for both constipation-dominant and diarrhoea-dominant presentations. Chamomile and fennel address spasm and gas. Adaptogens such as ashwagandha and siberian ginseng can help when stress is a major driver.
How does slippery elm work for the intestines?
Slippery elm bark contains mucilaginous polysaccharides that, when mixed with water, form a thick, soothing gel. This gel coats the intestinal lining, reducing irritation, protecting against further damage, and supporting the repair of a compromised mucosal barrier. It is one of my favourite remedies for both intestinal inflammation and what is increasingly called "leaky gut."
Are there herbs that help with constipation?
Yes — though the choice of herb depends on the type of constipation. Gentle bulking herbs like psyllium husk (Plantago ovata) add fibre and draw water into the bowel. Stimulant laxatives like senna or cascara cause contractions in the bowel wall and should only be used short-term. For chronic constipation, a comprehensive approach that includes diet, hydration, movement, and appropriate herbal support is most effective.
Can herbal medicine help with inflammatory bowel disease (IBD)?
Crohn's disease and ulcerative colitis are serious conditions requiring medical management, but herbal medicine can play a supportive role. Turmeric (Curcuma longa) has anti-inflammatory properties that have been studied in IBD. Aloe vera gel has been used for mild ulcerative colitis. Slippery elm, marshmallow, and calendula are soothing for an inflamed gut lining. Any herbal approach alongside IBD medication should be discussed with a gastroenterologist.
What is leaky gut, and can herbal medicine help?
Increased intestinal permeability ("leaky gut") refers to a breakdown of the tight junctions in the intestinal lining that normally prevent large molecules from crossing into the bloodstream. Contributing factors include chronic stress, inflammatory foods, alcohol, and NSAID use. Herbs such as slippery elm, marshmallow, calendula, and liquorice root can support mucosal repair. Addressing the underlying causes is equally important.
How does the gut microbiome relate to intestinal health?
The gut microbiome is the community of trillions of microorganisms living in the large intestine. A diverse, balanced microbiome supports digestion, produces certain vitamins, regulates immune function, and protects against pathogenic bacteria. Diet — particularly fibre intake — is the primary determinant of microbiome health. Prebiotic herbs like dandelion root and chicory can feed beneficial bacteria.
What dietary practices best support intestinal health?
A diet rich in diverse plant foods, fermented foods, and dietary fibre, while low in refined sugars and ultra-processed foods, provides the best foundation for intestinal health. Herbs complement this beautifully — but diet is always the first conversation I encourage people to have with themselves.
Does what I read in these articles apply to children?
Herbal medicine dosing for children is different from adults, and some herbs are not appropriate for young children at all. If you are seeking herbal support for a child's digestive health, please consult a qualified herbal practitioner.
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Study Western Herbal Medicine with ASOHM
Intestinal health is one of the most rewarding areas of herbal medicine to study, because the results are often felt quickly and profoundly. Our Lesson 3 covers the entire gastro-intestinal system — giving you a complete picture of how the gut works and how herbs can support it. I would love for you to join us as a student. View lesson packages and enrol today.
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