Skip to content

A multi centre, randomised, double blind, single dose parallel group, placebo controlled study to investigate the efficacy of Strepsils Plus and Strepsils Extra in the treatment of sore throat due to upper respiratory tract infection. - Strepsils Plus and Strepsils Extra Efficacy Study TH1017 29Nov10

A multi centre, randomised, double blind, single dose parallel group, placebo controlled study to investigate the efficacy of Strepsils Plus and Strepsils Extra in the treatment of sore throat due to upper respiratory tract infection. - Strepsils Plus and Strepsils Extra Efficacy Study TH1017 29Nov10

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2010-024045-69-GB
Enrollment
Unknown
Registered
2010-12-09
Start date
2011-01-11
Completion date
Unknown
Last updated
2012-03-19

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

Conditions

Sore throat due to upper respiratory tract infection MedDRA version: 12.1 Level: LLT Classification code 10041367 Term: sore throat

Interventions

Trade Name: Strepsils Plus Product Name: Strepsils Plus(0.6mg AMC, 1.2mg DCBA- R02AA03 covers both ingredients),10mg Lidocaine Pharmaceutical Form: Lozenge INN or Proposed INN: Amylmetacresol BP (A

Sponsors

Reckitt Benckiser Healthcare
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Only patients to whom all of the following conditions apply will be included: 1) Age: = 18 to = 75 years 2) Sex: male and female 3) Primary diagnosis: Sore throat onset within the previous 4 days as a result of a upper respiratory tract infection (URTI) 4) Patients who have a sore throat (= 6) on the Throat Soreness Scale at baseline. They will be instructed by the study nurse to swallow and circle the number on the scale that shows how your sore throat is when you swallow. Ratings on this 0-10 ordinal scale will be marked with 0= Not score (besides ‘0’ rating) and 10=Very Sore (beside ’10). 5) At least 1 symptom of URTI on the URTI questionnaire (e.g. sore throat) 6) Objective findings that confirm the presence of tonsillopharyngitis (= 5 points on the expanded 21-point Tonsillopharyngitis Assessment). 7) Patients who have difficulty swallowing score of >50mm on the Difficulty Swallowing Scale at baseline. They will be instructed by the study nurse to swallow and mark a line on the scale that shows how difficult it is for you to swallow. Ratings on this 0-100mm visual analogue scale will be marked with 0= Not Difficult (besides ‘0’ rating) and 100=Very Difficult (beside ’10). 8) Patients who have a swollen throat score of >33mm on the Swollen Throat Scale at baseline. They will be instructed by the study nurse to swallow and mark a line on the scale that shows how swollen their throat feels. Ratings on this 0-100mm visual analogue scale will be marked with 0= Not Swollen (besides ‘0’ rating) and 100=Very Swollen (beside ’10). 9) The patient is willing to take ‘nil by mouth’ 10 minutes before the dose 10) Patients who have given written informed consent Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: Patients to whom any of the following conditions apply must be excluded: 1) Any previous history of allergy or known intolerance to the study drug or the formulation active ingredients (AMC, DCBA, hexylresorcinol or lidocaine) 2) Woman of childbearing potential, who are pregnant or lactating, seeking pregnancy or failing to take adequate contraceptive precautions, (i.e. an oral or injectable contraceptive, an approved hormonal implant or topical patch, an intrauterine device, abstinence [should the patient become sexually active, she must agree to use a double barrier method] or condoms/diaphragm and spermicide). A woman of childbearing potential is defined as any female who is less than 2 years post-menopausal or has not undergone a hysterectomy or surgical sterilisation, e.g. bilateral tubal ligation, bilateral ovariectomy (oophorectomy). 3) Those whose sore throat has been present for more than 4 days. 4) Those who have used any sore throat medication containing a local anaesthetic with in the past 4 hours. 5) Those who have any disease that can compromise breathing e.g. asthma, bronchospasm, bronchopneumonia. 6) The patient has any evidence of mouth-breathing. 7) Those who have evidence of severe coughing. 8) Those who cannot tolerate fructose. 9) Those with a painful condition that may distract attention from sore throat pain (e.g. mouth ulcers, cough). 10) Those with a history of alcohol abuse or consume alcohol in excess of the recommended amounts (excessive alcohol >21 units per week for females and >28 units per week for males). 11) Those who have used an analgesic, antipyretic or cold medication (e.g. decongestant, antihistamine, antitussive or throat lozenge/spray) within the previous 8 hours. 12) Those who have used a longer acting or slow release analgesic during the previous 24 hours e.g. Piroxicam and Naproxen. 13) Those who have taken any medicated confectionary, throat pastille, spray, or any product with demulcent properties such as boiled sweets in the previous 2 hours. 14) Those with any history of renal or hepatic dysfunction. 15) Those previously randomised into the study. 16) Those who have participated in a clinical trial in the previous 30 days. Thirty days are calculated from time of last dosing in the prior trial to time of anticipated dosing in this trial. 17) Those unable in the opinion of the Investigator to comply fully with the study requirements.

Design outcomes

Primary

MeasureTime frame
Main Objective: The principal objective of the study is to determine the pain relieving effectiveness of two Strepsils products (Strepsils Plus and Strepsils Extra) in patients with a sore throat due to upper respiratory tract infection (URTI) compared to a placebo (dummy Pill) sugar based lozenge. Strepsils plus contain the same active antiseptic ingredients in Strepsils (0.6mg Amylmetacresol BP (AMC) and 1.2,g 2,4-Dichlorobenzyl alcohol (DCBA)) plus 10mg Lidocaine Hydrochloride which is a well established local anaesthetic characterised by a rapid onset of action and intermediate duration. Strepsils Extra contain 2.4 mg Hexylresorcinol which is an antiseptic with local anaethetic effects;Secondary Objective: The secondary objective of this study is to determine additional patient/consumer benefits with taking the lozenges by looking at patient responses to questionnaires including assessing their feedback on pain relief such as - is it soothing or numbing? did it provide relief from the sore throat? how long did the lozenge provide relief of your sore throat?;Primary end point(s): The primary outcome measure of the study is the change from baseline in the rating of throat soreness (using the 11 point throat soreness scale) for the Strepsils Plus and Extra versus the placebo at the 2 hours post dose.

Countries

United Kingdom

Outcome results

None listed

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