Study to Investigate the Effect of Paroxetine Mediated CYP2D6 Inhibition on the Pharmacokinetics of Tamsulosin in Healthy Male Volunteers

Boehringer Ingelheim

Status and phase: Completed; Phase 1

Conditions: Healthy

Treatments: Drug: Tamsulosin; Drug: Paroxetine

Study type: Interventional

Funder types: Industry

Identifiers

NCT02264184

527.79

Details and patient eligibility

About

Study to investigate the effect of CYP2D6 inhibition by paroxetine on the single oral dose pharmacokinetics of tamsulosin and to investigate the effect on safety and tolerability

Enrollment: 24 patients

Sex: Male

Ages: 21 to 50 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

All participants in the study are

• Healthy males
• Ranging from 21 to 50 years of age
• Body mass index (BMI) within 18.5 to 29.9 kg/m2
• In accordance with Good Clinical Practice (GCP) and the local legislation all volunteers will have given their written informed consent prior to admission to the study

Exclusion criteria

• Any finding of the medical examination (including blood pressure, pulse rate and ECG) deviating from normal and of clinical relevance
• Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders, clinically relevant electrolyte disturbances
• Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
• History of orthostatic hypotension, fainting spells or blackouts
• Chronic or clinically relevant acute infections
• History of allergy/hypersensitivity (including drug allergy) which is deemed relevant to the trial as judged by the investigator
• Intake of drugs with a long half-life (> 24:00 hours) within at least one month or less than ten half-lives of the respective drug before enrolment in the study or during the study
• Use of any drugs which might influence the results of the trial up to 7 days prior to enrolment in the study or during the study
• Participation in another trial with an investigational drug (within two months prior to administration or during the trial)
• Smoker (> 10 cigarettes or > 3 cigars of > 3 pipes/day)
• Inability to refrain from smoking on trial days
• Alcohol abuse (> 60 g/day)
• Drug abuse
• Blood donation (> 100 mL within four weeks prior to administration or during the trial)
• Any laboratory value outside the reference range if indicative of underlying disease or poor health
• Excessive physical activities within the last week before the trial or during the trial
• Hypersensitivity to treatment medication and/or related drugs of these classes
• Non extensive metabolizer (EM) for CYP2D6

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: None (Open label)

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24 participants in 2 patient groups

Tamsulosin + Paroxetine

Experimental group

Description:

Tamsulosin: q.d on day 1 Paroxetine: higher dose q.d. on days -7 to 2 q.d., lower dose on days -10 to -8 and 3 to 5

Treatment:

Drug: Paroxetine

Drug: Tamsulosin

Tamsulosin

Active Comparator group

Description:

Tamsulosin: q.d on day 1

Treatment:

Drug: Tamsulosin