Roisin Cahill
MPharm MPSI — Gut & Immune Health Specialist, Pharmacist & Co-Founder of RoCa Healthcare
- MPharm — PSI Registered Pharmacist (MPSI) — Reg. No. 11957
- Trinity College Dublin — Master of Pharmacy
- Co-Founder, RoCa Healthcare — Irish gut & immune health brand
- Deputy Responsible Person — HPRA Wholesale Distribution Authorisation
- Specialist in gut health, IBS, IBD, postnatal recovery and gut lining protection
- Speaker at wellness events and clinical conferences across Ireland
- Clinical focus: digestive health, women's hormone-gut axis, fibre & probiotic therapy
- Chemco Pharmacy, Ireland
"Gut health is the foundation of overall wellbeing — and the right pharmacist guidance can transform a patient's quality of life. Through pharmacy, education and evidence-based nutritional support, we can help people take simple but meaningful steps toward improving their health every day." — Roisin Cahill, Pharmacist (PSI Reg. No. 11957), Chemco Pharmacy
Areas of Clinical Expertise
Gut & Digestive Health
- Irritable Bowel Syndrome (IBS) — constipation, diarrhoea and mixed-type
- Inflammatory Bowel Disease (IBD) — Crohn's and ulcerative colitis support
- Bloating, gas and abdominal discomfort
- Constipation in pregnancy and postnatal recovery
- Gut lining protection and barrier repair
- Fibre therapy — soluble fibre and psyllium husk
- Probiotic and prebiotic selection — strain-specific guidance
Women's Health & Hormones
- Pregnancy nutrition — iron, fibre and digestive support
- Postnatal recovery — bowel function and bloating after birth
- Perimenopausal and menopausal digestive changes
- The hormone-gut axis — estrobolome and microbiome diversity
- Heavy or sensitive bowel patterns during the menstrual cycle
- Pelvic health and continence — fibre support during exercise
- Immune support during seasonal change and back-to-school periods
Roisin's Story
I studied pharmacy at Trinity College Dublin and have spent over a decade in clinical practice — but my interest in gut health did not come from a textbook. It came from listening. Every day in pharmacy I would meet patients with IBS, with bloating they could not explain, with mums-to-be unable to manage pregnancy constipation, and with people whose lives were quietly restricted by digestive symptoms they did not feel they could talk about.
What I kept seeing was the same gap: people knew fibre and probiotics mattered, but the products available were either gritty and difficult to take, or were not tailored to the kind of conditions I was seeing in clinic. That is what led me, alongside my father Pat, to co-found RoCa Healthcare. Pat has worked in nutrition for over thirty years — from just outside Thurles in Tipperary — and was the driving force behind the science and the formulation work. Together we built SylliFlor® — a psyllium husk fibre supplement designed to actually taste good and to support the conditions I was treating in pharmacy: IBS, constipation, bloating and gut lining health.
I work closely with hospitals, healthcare professionals and the fitness industry, because gut health touches everything: pelvic floor recovery after birth, energy levels in athletes, immune resilience in children going back to school, and quality of life in patients with IBD. I regularly speak at wellness events and clinical conferences — covering IBS, IBD, bloating, constipation in pregnancy, postnatal recovery and gut lining protection — and I try to make complex health topics accessible and practical, not jargon-heavy.
Outside the pharmacy I spend part of the year as a ski instructor in the Swiss Alps. It might sound like a different world, but it feeds the same approach to my work — balance, energy, the connection between physical movement and digestive health, and the value of taking the time to slow down and reset. That is what I try to bring to every patient consultation at Chemco: science, patience and practical advice you can actually use.
Roisin's Top 7 Pharmacist-Recommended Picks
Daily-use gut, women's and immune health products from Roisin's clinical practice. Black tags indicate RoCa Healthcare — products Roisin co-developed.
SylliFlor® Psyllium Husk — Vanilla 250g
My bestseller and a product I co-developed with my father Pat. Pure psyllium husk fibre with a natural vanilla flavour — designed to actually taste good. Soluble fibre forms a gel in the gut that supports bowel regularity, feeds the microbiome and helps with both constipation and loose stools. I recommend two teaspoons daily, sprinkled on porridge or stirred into a smoothie, with at least 250ml of water afterwards. Results typically within four to five days.
SylliFlor® Psyllium Husk — Cocoa 250g
The same psyllium husk fibre in a natural cocoa flavour — for patients who prefer a chocolate profile or who like to add it into hot porridge or hot drinks. Many of my patients alternate between Vanilla and Cocoa to avoid flavour fatigue, which improves long-term adherence. Vegan, gluten-free, no added sugar.
Alflorex® Dual Action Probiotic & Fibre 30 Capsules
Alflorex® contains the clinically studied Bifidobacterium longum 35624 strain — the most evidence-backed probiotic for IBS in Ireland. The Dual Action format adds a soluble fibre to the same capsule, which is exactly the pairing I recommend in clinic. Probiotics need fibre to thrive — think of probiotics as the seeds and fibre as the soil they grow in. One capsule daily, and patients often see real change within four to eight weeks.
Alflorex® Probiotic — 3 Month Supply
For IBS, gut symptoms rarely resolve in two weeks — sustained use of the right strain is what makes the difference. The three-month supply is what I recommend to most IBS patients starting Alflorex, because clinical trials show benefits build over time and adherence is much better at this duration. Better value than buying three separate packs.
FabU Gut Culture — Probiotic, Prebiotic & Postbiotic 60 Capsules
An Irish-developed daily gut supplement combining probiotic strains with the prebiotic fibre that feeds them and the postbiotic metabolites that calm the gut lining. A good alternative for patients who want a single capsule daily covering all three components — and for those building a longer-term daily gut-health routine rather than treating an acute IBS flare.
Active Iron® for Women 60 Capsules
Iron supplementation is one of the most commonly needed — and most commonly poorly tolerated — interventions in women's health. The gentler formulation in Active Iron is far better tolerated in patients prone to nausea or constipation, which matters because pregnancy iron tablets are often abandoned for those exact side effects. I recommend pairing it with SylliFlor where constipation is an issue, and continuing it through postnatal recovery where appropriate.
Colpermin® IBS Relief Peppermint Oil Capsules
For IBS abdominal pain and cramping, peppermint oil capsules have strong clinical evidence behind them — they act as a smooth muscle relaxant on the gut. I use Colpermin alongside SylliFlor and Alflorex as a complete IBS toolkit: SylliFlor regulates bowel habits, Alflorex addresses the microbiome and Colpermin addresses the pain and spasm. Take one capsule 15–30 minutes before meals during a flare.
Condition by Condition — Quick Reference
The right starting point for each gut, women's or immune health concern, from Roisin's clinical practice.
IBS — Constipation Predominant
SylliFlor® daily for stool regularity, plus Alflorex® Dual Action for microbiome support. Build slowly over 2–4 weeks.
Shop SylliFlor →IBS — Diarrhoea Predominant
SylliFlor® (water-binding) plus Alflorex® for microbiome. Colpermin® during cramping flares.
Shop IBS Range →Bloating & Trapped Wind
Alflorex® or FabU Gut Culture daily. Add SylliFlor® if bowel habits also irregular. Review trigger foods.
Shop Bloating Support →Constipation in Pregnancy
SylliFlor® twice daily with plenty of water — gentle, non-stimulant fibre. Pair with Active Iron Women if iron is causing the issue.
Shop Pregnancy →Postnatal Recovery
Continue Active Iron Women postnatally if levels are low. SylliFlor® supports gentle bowel return and pelvic floor healing.
Postnatal Range →IBD — Crohn's & UC Support
SylliFlor® supports stool form during loose phases. Always discuss with your gastroenterologist before adding supplements during a flare.
SylliFlor for IBD →Perimenopausal Bloating & Digestion
SylliFlor® daily for fibre and bowel regularity. Add a probiotic to support microbiome diversity which declines with falling oestrogen.
Midlife Gut Health →Antibiotic Recovery
Optibac For Those On Antibiotics during and for at least one week after the course. Daily Alflorex® afterwards to rebuild.
Shop Probiotics →Loose Stools & Urgency
SylliFlor® binds excess water in the bowel and supports stool form. Particularly useful for exercise-induced or stress-related urgency.
Shop SylliFlor →Qualifications, Training & Clinical Experience
Full Clinical Profile
- MPharm — Master of Pharmacy, Trinity College Dublin
- PSI Registered Pharmacist (MPSI) — Registration No. 11957 — Verify at psi.ie →
- Co-Founder, RoCa Healthcare — Irish gut and immune health brand, founded with her father Pat Cahill
- Co-developer of SylliFlor® — psyllium husk fibre supplement supplied to pharmacies and health stores nationally
- Deputy Responsible Person — HPRA Wholesale Distribution Authorisation (WDA), Purcellsinch, Kilkenny — supports GDP compliance and pharmaceutical quality assurance
- Clinical specialist in IBS, IBD, bloating, constipation in pregnancy, postnatal recovery and gut lining protection
- Speaker at wellness events and clinical conferences across Ireland — covering gut health, the hormone-gut axis and women's digestive health
- Works directly with hospitals, healthcare professionals and the fitness industry on practical, evidence-based gut health support
- Pharmacist at Chemco Pharmacy — daily clinical advice on gut, digestive and women's health
More from Roisin & Chemco
Ask Roisin or the Chemco Team
Questions about IBS, gut health, pregnancy nutrition or which supplement is right for your symptoms? Our PSI-registered pharmacists are available by phone and email, or through our contact form.