In subjects who received GXR in clinical trials,


In subjects who received GXR in clinical trials,

systolic blood pressure (SBP), diastolic blood pressure (DBP), and pulse rate decreased as actual doses increased, and they then returned toward baseline as doses stabilized and were PARP inhibitor tapered down [13–15]. These changes were expected, given that immediate-release guanfacine was initially used as an antihypertensive agent. In contrast, increases in SBP, DBP, and pulse rate are often reported with MPH treatment [16, 17]. Consequently, there is a need to investigate selleck chemicals llc the impact of coadministration of GXR and MPH on these parameters as well as the overall safety of this combination. The primary purpose of the present study ( identifier: NCT00901576) was to evaluate the pharmacokinetic profiles of GXR and MPH, alone and in combination, in healthy adults. Evaluating the safety of GXR, MPH,

and coadministration of both drugs was a secondary objective of this study. 2 Materials and Methods This open-label, randomized, single-center, three-period crossover, drug–drug interaction study was conducted from 18 May to see more 6 July 2009. Healthy adults were randomized to receive single doses of GXR (Intuniv®; Shire Development LLC, Wayne, PA, USA) 4 mg, MPH extended release (Concerta®; McNeil Pediatrics, Titusville, NJ, USA) 36 mg, and the combination of GXR 4 mg and MPH 36 mg. Institutional review board approval was received to conduct

the study, and informed consent was provided by all subjects. The study was conducted in accordance with current applicable regulations, International Conference on Harmonisation (ICH) Good Clinical Practice (GCP) Guideline E6, local ethical and legal requirements, and the principles of the 18th World Medical Assembly and amendments. 2.1 Subjects The study subjects were healthy volunteers aged 18–45 years who exhibited no significant or relevant abnormalities in medical history, physical examination, vital signs, or laboratory evaluation that were reasonably likely to interfere with the subject’s participation in or ability to complete Thymidine kinase the study. Normal or clinically insignificant electrocardiogram (ECG) findings were also required for inclusion in the study. The study exclusion criteria included current or recurrent disease (such as cardiovascular, renal, liver, or gastrointestinal diseases, malignancy, or other conditions) that could affect clinical or laboratory assessments or the action, absorption, or disposition of the investigational agents. Cardiac conditions, including a history of hypertension or a known family history of sudden cardiac death or ventricular arrhythmia, were also exclusionary.

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