KF2022#3-trial: Effect of Tea and Cola Beverage on Absorption of Risperidone Oral Solution (NCT06218979) | Clinical Trial Compass
CompletedPhase 1
KF2022#3-trial: Effect of Tea and Cola Beverage on Absorption of Risperidone Oral Solution
Finland12 participantsStarted 2023-12-08
Plain-language summary
Risperidone is widely used in the treatment of schizophrenia, bipolar disorder, and aggression associated with moderate or severe Alzheimer's dementia. In vitro studies have shown that constituents of tea and cola beverages can result in insoluble complex formation with risperidone, potentially reducing risperidone oral absorption. The purpose of this study is to investigate the effect of tea and cola beverage on the pharmacokinetics of risperidone oral solution.
In an open three-phase, randomized, crossover study with 12 healthy volunteers, the subjects will receive a 1 mg dose of risperidone oral solution with either water, tea or cola beverage. Blood samples will be collected and risperidone's pharmacokinetics will be monitored up to 48 hours postdose. Primary endpoint is area under the plasma concentration-time curve of risperidone.
Recruitment starting date is December 4, 2023.
Who can participate
Age range
18 Years – 45 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Written informed consent
* Age 18-45
* Healthy
* Systolic blood pressure ≥110 mmHg
* Heart rate ≥ 50/min
* Normal ECG
* Accepted results from laboratory tests (blood haemoglobin, basic blood count and blood platelets, alanine aminotransferase, alkaline phosphatase, glutamyl transferase, creatinine, plasma potassium and sodium). Negative pregnancy test result (serum human chorionic gonadotropin) for women.
Exclusion Criteria:
* Significant disease
* Mood disorder or suicidality
* Smoking
* Using oral contraception pills or other regular medication
* Pregnancy (current or planned) or nursing
* Participation in any other studies involving investigational or marketed drug products within three months prior to the entry into this study
* Donation of blood within three months prior to the entry into this study
* Significant overweight / small or hard-to-find veins
* BMI \< 18.5 kg/m2
* Insufficient Finnish language skills
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Area under the plasma concentration - time curve of risperidone
Timeframe: Prior to and 0.5, 1, 1.5, 2, 3, 4, 6, 8, 11, 24, and 48 hours after administration of risperidone