Bioequivalence assessment of tulobuterol transdermal delivery system in healthy subjectsâ©.
Int J Clin Pharmacol Ther
; 56(8): 381-386, 2018 Aug.
Article
in En
| MEDLINE
| ID: mdl-29932416
ABSTRACT
OBJECTIVE:
The purpose of this study was to evaluate the bioequivalence in the pharmacokinetics of two 2-mg tulobuterol transdermal delivery systems (TDSs) in healthy subjects. MATERIALS ANDMETHODS:
The pharmacokinetic (PK) analysis was performed using data from a randomized, open-label, single-dose, two-way, two-period, crossover study. Eligible subjects received either the Bretol®patch (test drug) or Hokunalin®patch (reference drug) in sequence according to their allocated group. Serial blood samples for PK analyses were collected for up to 48 hours after tulobuterol TDS application. The PK parameters, including the maximum concentration (Cmax) and area under the curve from time zero to the last quantifiable concentration time (AUClast), were estimated by using noncompartmental analysis. The geometric mean ratios (GMRs) of the Cmax and AUClast and their 90% confidence intervals (CIs) were estimated.RESULTS:
A total of 27 subjects completed the study as planned. The concentration-time profiles of tulobuterol were similar in both formulations. The GMRs (90% CIs) of Cmax and AUClast were 0.9443 (0.8790 - 1.0144) and 0.9600 (0.8660 - 1.0642), respectively.CONCLUSION:
The PK profiles of both tulobuterol TDSs were comparable. In addition, the 90% CIs of the GMR were within the bioequivalence criteria of 0.800 - 1.250. Therefore, the Bretol®patch can be used as an alternative to the Hokunalin®patch for the treatment of patients with asthma and chronic obstructive pulmonary disease.â©.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Terbutaline
/
Adrenergic beta-2 Receptor Agonists
Type of study:
Clinical_trials
/
Prognostic_studies
Limits:
Adult
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Int J Clin Pharmacol Ther
Journal subject:
FARMACOLOGIA
/
TERAPIA POR MEDICAMENTOS
Year:
2018
Document type:
Article