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A single centre, randomised, single (patient) blind, single dose, parallel group exploratory study to compare the efficacy of an 8.75mg flurbiprofen lozenge (Strefen) with a 3mg benzydamine lozenge (Difflam) following oral administration in 200 subjects with sore throat. - Comparator study of Strefen and Difflam

A single centre, randomised, single (patient) blind, single dose, parallel group exploratory study to compare the efficacy of an 8.75mg flurbiprofen lozenge (Strefen) with a 3mg benzydamine lozenge (Difflam) following oral administration in 200 subjects with sore throat. - Comparator study of Strefen and Difflam

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2005-003588-22-GB
Enrollment
200
Registered
2005-10-06
Start date
2005-11-29
Completion date
Unknown
Last updated
2019-11-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sore throat suitable for treatment in an OTC setting.

Interventions

Trade Name: Strefen lozenge Product Name: Strefen honey & lemon lozenge Pharmaceutical Form: Lozenge INN or Proposed INN: Flurbiprofen C

Sponsors

Boots Healthcare International Limited
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Only subjects to whom all of the following conditions apply will be included: 1) Age 18 to 65 years 2) Sex: Male and female subjects are eligible for entry. 3) Primary diagnosis: Sore throat of =65 years) F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: Subjects to whom any of the following conditions apply must be excluded: 1) Hypersensitivity to any of the constituents, aspirin or other non-steroidal anti-inflammatory drugs (NSAIDS). 2) Subjects with existing, or history of peptic ulceration. 3) Subjects with a history of bronchospasm, rhinitis or urticaria associated with aspirin or other NSAIDS. 4) Subjects with existing, or history of bronchial asthma. 5) Subjects with hereditary fructose intolerance, glucose-galactose malabsorption syndrome or saccharose-isomaltose insufficiency. 6) Subjects with renal, cardiac or hepatic impairment. 7) Subjects with a potential for abnormal bleeding 8) Subjects with hypertension. 9) Use of a pastille, lozenge, spray or other topical throat treatment within 2 hrs of study entry, any sore throat medication containing a local anaesthetic within 4 hrs of study entry, a short-acting analgesic within 6 hrs of study entry, or any long acting or slow release analgesic within 24 hrs of study entry. 10) Women of childbearing potential, who are pregnant or lactating, seeking pregnancy or failing to take adequate contraceptive precautions. 11) Those previously randomised into the study. 12) Subjects holding North American citizenship as the BHI Clinial Trials Insurance does not cover those persons. 13) Those who have participated in a clinical trial in the previous two months. 14) Those unable in the opinion of the investigator to comply fully with the study requirements.

Design outcomes

Primary

MeasureTime frame
Main Objective: To compare the efficacy of an 8.75mg flurbiprofen lozenge with a 3mg benzydamine lozenge in the treatment of sore throat.;Secondary Objective: To compare the consumer preferences for the 8.75mg flurbiprofen lozenge with a 3mg benzydamine lozenge.;Primary end point(s): The primary variables will be those questions from the assessment questionnaire that reflect the efficacy and duration of action of the formulations.

Countries

United Kingdom

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026