IBS Treatment Online — Flare-Up Medication for Diagnosed Irritable Bowel Syndrome

IBS symptoms and treatment: what irritable bowel syndrome is, and how doctors confirm it

Irritable bowel syndrome is a disorder of how the gut and the brain talk to each other, not damage to the bowel: the gut is more sensitive and its movements less coordinated, so ordinary digestion produces pain, bloating and a change in bowel habit. It affects around one adult in twenty across Europe by the Rome IV criteria (one in ten by older definitions), more women than men, usually starting before 40. Doctors diagnose it on the Rome IV criteria — recurrent abdominal pain at least one day a week over the last three months, associated with at least two of passing stool, a change in frequency and a change in stool form — and by making sure nothing else explains the symptoms. IBS is then classed by the stool you pass on your bad days: IBS-D (diarrhoea), IBS-C (constipation) or IBS-M (mixed), because the treatments differ.

The tests are few and the point of them is exclusion: a blood count and inflammation marker, coeliac antibodies, and — for diarrhoea in anyone under about 45 — a stool test for calprotectin, which separates IBS from inflammatory bowel disease without a colonoscopy. A colonoscopy is for warning signs and older patients, not for typical IBS. There is no test that confirms IBS, online or otherwise; the diagnosis is the pattern plus the negative tests, which is why the questionnaire is built on the criteria and the warning signs.

Treatment for IBS: what the doctor prescribes for pain, diarrhoea and constipation

European gastroenterology guidance treats the symptom that dominates. For pain and cramping, an antispasmodic — mebeverine, otilonium bromide, hyoscine butylbromide or enteric-coated peppermint oil — taken 20 minutes before meals or at the first sign of a flare. For diarrhoea and urgency, loperamide in the lowest dose that works, taken before the commute or the meeting rather than after the problem starts; it does nothing for pain, so it is paired with an antispasmodic. For constipation, soluble fibre (ispaghula or psyllium) built up over two weeks, then macrogol if needed; lactulose and wheat bran make bloating worse and are avoided. Bloating itself responds most to the fibre change and to the diet below.

When those have been tried properly and pain still dominates, the next step is a low-dose tricyclic such as amitriptyline 10–30 mg at night — used here as a gut-brain neuromodulator, not as an antidepressant — with a review after four to six weeks. That decision belongs in a video consultation, as does linaclotide for constipation-predominant IBS that has failed the ordinary laxatives. Psychological treatments — cognitive behavioural therapy and gut-directed hypnotherapy — have some of the best long-term evidence in IBS, and are worth asking about when flares are frequent.

IBS flare-up treatment: what to do in the first 48 hours

Eat small, regular, plain meals rather than skipping them; cut caffeine, alcohol and fizzy drinks for the duration; take the antispasmodic before food; use loperamide only on the days you need to be somewhere. Do not add a fibre supplement mid-flare if bloating is the problem — start it once the flare settles. A hot-water bottle, walking and sleep help more than they sound. A flare usually settles within days; one that lasts beyond two weeks, brings blood, wakes you at night or feels different from your usual IBS is the point to stop self-managing and be seen.

Diet in IBS: fibre, FODMAPs and what the evidence supports

Regular meals, enough fluid, less caffeine and alcohol, and swapping insoluble fibre (bran) for soluble fibre (oats, ispaghula) are the first-line dietary advice in every European guideline and help a good share of people on their own. The low-FODMAP diet — restricting fermentable sugars in wheat, onions, garlic, some fruits, dairy lactose and sweeteners for four to eight weeks, then reintroducing them one group at a time — reduces symptoms in about two-thirds of people, but it is restrictive and should be done with a dietitian, never permanently. Probiotics are worth a twelve-week trial of one product; stop if nothing changes. Gluten-free eating helps only if coeliac disease has been excluded first, which is one reason the test matters.

Using the prescription at a pharmacy anywhere in the EU

The prescription is issued in English by an EU-registered doctor, names the active ingredient rather than a brand, and carries a verification code the pharmacist can check at mobidoctor.eu/verify. A prescription issued in one EU country must be recognised in another (Directive 2011/24/EU); the active-ingredient name is what makes that work at the counter. Dispensing is the pharmacist's decision under the rules of the country you are in, and depends on the medicine being available there. If you need a supply covering several months, say so in the questionnaire — the doctor decides the quantity. Antispasmodics, loperamide and macrogol are ordinary pharmacy stock across the EU; some are sold without a prescription at pharmacies in some countries, and the prescription can be used in all of them. The other conditions the Express Assessment covers — 13 in all, plus repeat prescriptions — are listed on the online doctor prescription page.

Read the full irritable bowel syndrome guide: symptoms, causes, tests and treatment

Sources: United European Gastroenterology / ESNM — clinical guidelines on functional bowel disorders, current edition · Rome Foundation — Rome IV diagnostic criteria for irritable bowel syndrome

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