Source: Department of Gastroenterology, UMR 1073, Rouen University Hospital, University of Rouen, Rouen, France.

BACKGROUND:

In routine practice, irritable bowel syndrome (IBS) symptoms are often difficult to be relieved and impair significantly patients’ quality of life (QoL). A randomised, double-blind, placebo-controlled study has shown the efficacy of alverine citrate/simeticone (ACS) combination for IBS symptom relief.

AIM:

As IBS symptoms are often intermittent, this pragmatic study was designed to compare the efficacy of an on-demand ACS treatment vs. that of usual treatments.

METHODS:

Rome III IBS patients were enrolled by 87 general practitioners who were randomly allocated to one of two therapeutic strategies: on-demand ACS or usual treatment chosen by the physician. The primary outcome measure was the improvement of the IBSQoL score between inclusion and month 6.

RESULTS:

A total of 436 patients (mean age: 54.4 years; women: 73.4%) were included, 222 in the ACS arm and 214 patients in the usual treatment arm, which was mainly antispasmodics. At 6 months, improvement of IBSQoL was greater with ACS than with the usual treatment group (13.8 vs. 8.4; p < 0.0008). The IBS-severity symptom score (IBS-SSS) was lower with ACS than in the usual treatment arm with a mean (SE) decrease of 170.0 (6.6) vs. 110.7 (6.7), respectively (p = 0.0001). An IBS-SSS < 75 was more frequent in the ACS group (37.7% vs. 16.0%; p < 0.0001). Improvement of both abdominal pain and bloating severity was also greater with the on-demand ACS treatment, which was associated with both lower direct and indirect costs.

CONCLUSIONS:

After 6 months, on-demand ACS treatment led to a greater improvement of QoL, reduced the burden of the disease and was more effective for IBS symptom relief than usual treatments.

© 2013 The Authors International Journal of Clinical Practice Published by John Wiley & Sons Ltd.

Source: Department of Neurogastroenterology, Toxalim- INRA, Toulouse, France. lbueno@toulouse.inra.fr

OBJECTIVES:

Alverine, an antispasmodic agent for the treatment of irritable bowel syndrome (IBS), may be combined with simethicone, a protective agent of the mucosa. Stress is a major factor triggering abdominal pain in IBS and causing hypersensitivity to colonic distension in animals through an increased colonic permeability. The antinociceptive effects of alverine and simethicone, separately or in association, were evaluated on stress-induced colonic hypersensitivity to distension in rats. The influence of simethicone on altered permeability was also tested.

METHODS:

Groups of 8-10 female adult Wistar rats (200-250 g) housed individually were used. Gut paracellular permeability was evaluated after 2 h of partial restraint stress using oral gavage with (51) Cr-EDTA and 24 h of urine collection. The number of abdominal cramps during colonic distension was evaluated in animals equipped with electrodes on their abdominal striated muscles.

KEY FINDINGS:

At 200 mg/kg p.o. twice a day, but not at lower doses, simethicone reduced stress-induced increase of colonic permeability and hypersensitivity to distension. Administered alone at 10 mg/kg p.o., alverine also reduced stress-induced hypersensitivity to distension; lower doses were inactive. However, alverine administered at an inactive dose with simethicone suppressed stress-induced hypersensitivity to distension.

CONCLUSIONS:

We conclude that both simethicone and alverine have visceral antinociceptive effects by two different mechanisms and that simethicone exerts a potentiating effect on the antinociceptive action of alverine.

Source : Guillaume Cadiot, Service d’hépato-gastroentérologie et de cancérologie digestive, Hôpital Robert Debre´, Rue Serge Kochman, 51092 Reims cedex, France.

Background :

The factors associated with inadequate bowel cleansing leading to colonoscopy failure are not well known.

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Source: 1First Department of Medicine, University of Szeged, Szeged, Hungary. witt@in1st.szote.u-szeged.hu

Abstract

BACKGROUND:

Alverine citrate and simeticone combination has been used for almost 20 years in irritable bowel syndrome (IBS), but supportive scientific evidence of efficacy was limited.

AIM:

To evaluate the efficacy of alverine citrate and simeticone combination in patients with IBS-related abdominal pain/discomfort.

METHODS:

A total of 412 IBS patients meeting ROME III criteria were included in this double-blind randomized placebo-controlled study if their abdominal pain/discomfort intensity was at least 60 mm on a 0-100 mm visual analogue scale (VAS) during a 2-week run-in treatment-free period. Patients were randomly assigned through the use of Interactive Voice Response System to receive either alverine citrate 60 mg with simeticone 300 mg three times daily or matching placebo for 4 weeks.

RESULTS:

The full analysis set included 409 patients (71.4% female: mean age: 46.2 +/- 13.9 years). At week 4, alverine citrate and simeticone group had lower VAS scores of abdominal pain/discomfort (median: 40 mm vs. 50 mm, P = 0.047) and higher responder rate (46.8% vs. 34.3%, OR = 1.3; P = 0.01) as compared with placebo group. Patient receiving alverine citrate and simeticone reported greater global symptom improvement compared with those receiving placebo (P = 0.0001). Reported adverse events were similar in both groups.

CONCLUSION:

Alverine citrate/simeticone combination was significantly more effective than placebo in relieving abdominal pain/discomfort in patients with IBS.