Questionnaire to Assess Gastrointestinal Symptoms of Oral Iron.

February 3, 2017 updated by: dora pereira, Medical Research Council

Validation of a Simple Questionnaire to Assess Gastrointestinal Symptoms After Oral Ferrous Sulphate Supplementation.

Oral iron supplementation is often associated with rapid onset of gastrointestinal side-effects. The aim of this study was to develop and trial a short, simple questionnaire to capture these early side-effects and to determine which symptoms are more discriminating.

The study was a double-blind placebo-controlled randomized parallel trial with one week treatment followed by one week wash-out. Subjects were randomized into two treatment groups (n=10/group) to receive either ferrous sulphate (200 mg capsules containing 65 mg of iron) or placebo, both to be taken at mealtimes twice daily during the treatment period. Subjects completed the questionnaires daily for 14 days. The questionnaire included gastrointestinal symptoms commonly reported to be associated with the oral intake of ferrous iron salts (i.e. nausea, vomiting, heartburn, abdominal pain, diarrhoea, and constipation).

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

20

Phase

  • Early Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Generally healthy subjects.

Exclusion Criteria:

  • The presence of any chronic disease, pregnancy or lactation were considered as exclusion criteria.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Ferrous sulfate
ferrous sulfate taken at mealtimes twice daily during 1 week of the treatment period.
Dietary supplement: ferrous sulfate
ferrous sulphate (200 mg capsules containing 65 mg of iron) to be taken at mealtimes twice daily for 7 days during the treatment period.
Other Names:
  • ferrous sulphate
Placebo Comparator: Placebo
placebo taken at mealtimes twice daily during 1 week of the treatment period.
Dietary supplement: Placebo
placebo capsules: methyl cellulose

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
gastrointestinal symptoms
Time Frame: 14 days
Subjects completed the questionnaires daily for 14 days. The questionnaire included gastrointestinal symptoms commonly reported to be associated with the oral intake of ferrous iron salts (i.e. nausea, vomiting, heartburn, abdominal pain, diarrhoea, and constipation).
14 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Medical Research Council

Collaborators

King's College London

Investigators

  • Principal Investigator: Miranda Lomer, PhD, King's College London
  • Study Chair: Jonathan Powell, PhD, MRC Human Nutrition Research

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2004

Primary Completion (Actual)

December 1, 2004

Study Completion (Actual)

December 1, 2004

Study Registration Dates

First Submitted

May 21, 2014

First Submitted That Met QC Criteria

May 22, 2014

First Posted (Estimate)

May 23, 2014

Study Record Updates

Last Update Posted (Estimate)

February 6, 2017

Last Update Submitted That Met QC Criteria

February 3, 2017

Last Verified

February 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Symptoms KCL

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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