The present clinical trial will be conducted to compare the bioavailability of rivastigmine and assess bioequivalence at steady-state of the Test product RIV-TDS 13.3 mg/24 h and the marketed Reference product Exelon® 13.3 mg/24 hours transdermal patch after multiple patch application. Each of both treatments will last 5 days.
This will be a single centre, open-label, randomised (order of treatments), balanced, 2-period, 2-sequence, cross-over trial with multiple applications of rivastigmine transdermal patches. There will be no wash-out, i.e. the first investigational patch application of the second study period will take place the day of the last investigational patch removal of the first study period (direct switch-over). Prior to start of first treatment, there will be an adaptation phase with 4 consecutive applications of Exelon® 9.5 mg/24 hours transdermal patch over a period of 4 days (each patch will be applied for 24 hours). Following the removal of the last investigational patch in period II, there will be a post-treatment tapering phase with 2 consecutive applications of Exelon® 9.5 mg/24 hours transdermal patch over a period of 2 days (each patch will be applied for 24 hours). Furthermore, during the adaptation phase, both study periods and the tapering phase, scopolamine transdermal patches will be applied as co-medication to attenuate effects of rivastigmine and reduce Adverse Events.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
36
5 consecutive transdermal patch applications, each with a nominal release rate of 13.3 mg/24 hours
5 consecutive transdermal patch applications, each with a nominal release rate of 13.3 mg/24 hours
SocraTec R&D GmbH, Clinical Pharmacology Unit
Erfurt, Thuringia, Germany
AUC0-tau,ss
Area under the plasma concentration vs. time curve at steady state for rivastigmine
Time frame: from 0 to 24 hours following the 5th patch application
Ctau,ss
(Trough) minimum plasma concentration at the end of the dosing interval at steady state for rivastigmine
Time frame: from 0 to 24 hours following the 5th patch application
Cmax,ss
Maximum plasma concentration within the dosing interval at steady state for rivastigmine
Time frame: from 0 to 24 hours following the 5th patch application
Patch adhesion
one-sided lower 90% confidence limit of mean adherence percentage at the end of the dosing interval of the 5th patch
Time frame: from first investigational patch application until removal of the last investigational patch (approx. 10 days)
Skin irritation
frequency of scores for quantification of skin irritation per treatment and time point
Time frame: from first investigational patch removal until last investigational patch removal (approx. 10 days)
Adverse events
descriptive evaluation of frequency and intensity, relationship to the IMP, action taken, outcome, seriousness, period and treatment
Time frame: approximately 2 weeks, through study completion in case of follow-up
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