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Pilot double blind randomised placebo controlled crossover trial of Hyoscine for the treatment of Clozapine induced nocturnal sialorrhoea. - Reducing Excess Salivation Trial (REST)

Pilot double blind randomised placebo controlled crossover trial of Hyoscine for the treatment of Clozapine induced nocturnal sialorrhoea. - Reducing Excess Salivation Trial (REST)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2009-016300-23-GB
Enrollment
12
Registered
2009-11-09
Start date
2009-12-14
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

Sialorrhoea in patients treated with clozapine. MedDRA version: 12.0 Level: LLT Classification code 10059812 Term: Sialorrhoea

Interventions

Trade Name: Kwells Product Name: Kwells 300 microgram tablets Pharmaceutical Form: Tablet INN or Proposed INN: Scopolamine hydrobromide CAS Number: 114-49-8 Other descriptive name: Hyoscine Hydrobromi

Sponsors

King's College London
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Diagnosis of Schizophrenia or Schizoaffective disorder as per DSM IV-TR criteria. 2. Receiving clozapine for at least two weeks 3. Clozapine dose in the range 200 – 900 mg per day. 4. Able to speak English. 5. Have a minimum score of 2 on the TNHS prior to inclusion in the trial. 6. Adults aged between 18 and 65 years of age 7. Capable of understanding the information given and giving fully informed consent prior to any study specific procedures. 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) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1. Medical conditions that could influence hypersalivation (e.g. idiopathic Parkinson’s Disease). 2. History of an allergic reaction to hyoscine hydrobromide. 3. Any of the following contra-indications to hyoscine as stated in the British National Formulary and electronic Medicines Compendium: Prostatic enlargement, myasthenia gravis, pyloric stenosis, paralytic ileus, glaucoma and pregnancy (see appendix C). 4. A woman of childbearing potential, who has tested negative for pregnancy, unable or unwilling to use appropriate contraception during the study. 5. Participation in another therapeutic study within the preceding 12 weeks or use of other investigational drugs or agents. 6. Lack of capacity to provide informed consent to the proposed intervention.

Design outcomes

Primary

MeasureTime frame
Main Objective: This is a pilot study to obtain data on the efficacy of Hyoscine 0.3mg nocte in reducing salivation at night in patients treated with Clozapine. ;Secondary Objective: To monitor the safety of Hyoscine 0.3mg nocte in patients taking Clozapine with nocturnal sialorrhoea. To investigate whether quality of life is enhanced by treatment with Hyoscine 0.3mg nocte in patients taking Clozapine with nocturnal sialorrhoea. To pilot a two new methods of estimating the extent of nocturnal sialorrhoea, by measuring the diameter of the wet patch and the change in mass of the patient’s pillowcase overnight. ;Primary end point(s): Score on the Toronto Nocturnal Hypersalivation Scale each morning

Countries

United Kingdom

Outcome results

None listed

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