View clinical trials related to Drug Interactions.
Filter by:Ageing is characterized by physiological changes, which can impact drug pharmacokinetics and thereby cause drug-drug interactions. This study aims to assess the pharmacokinetics of amlodipine, atorvastatin and rosuvastatin in the presence of darunavir/ritonavir (inhibitor of drug metabolizing enzymes and drug transporters), by comparison with dolutegravir (no inhibitory effects on cytochromes or transporters involved in the disposition of the evaluated co-medications), in order to characterize the importance of drug-drug interactions in elderly individuals.
The primary objective of this study is to evaluate the effect of multiple doses of a uridine diphosphate glucuronosyltransferases (UGT)-inducing oral contraceptive (OC) regimen (ethinyl estradiol and levonorgestrel) on the PK of BIIB074 at steady state; evaluate the effect of multiple doses of BIIB074 on the pharmacokinetics(PK) of an OC regimen (ethinyl estradiol and levonorgestrel) at steady state. The secondary objective of this study is to evaluate the safety and tolerability of BIIB074 when administered alone and when coadministered with a UGT-inducing OC regimen containing ethinyl estradiol and levonorgestrel and to evaluate the effect of a UGT-inducing OC regimen (ethinyl estradiol and levonorgestrel) on the PK of the M13, M14, and M16 metabolites of BIIB074.
This is a Phase I, single center, two-part, randomized, open label, cross-over study. Part 1 of this study will evaluate the PK, safety, and tolerability of GSK525762 when administered alone and when co-administered following repeat dosing of itraconazole, a known strong inhibitor of Cytochrome P450 3A4 (CYP3A4) and a Para-glycoprotein (Pgp) inhibitor. Part 1 will consist of 2 Cohorts with preliminary PK and safety data obtained from Cohort 1 informing Cohort 2. Part 2 (one Cohort) of the study will evaluate the PK, safety, and tolerability of GSK525762 when administered alone and when co-administered following repeat dosing of rifampicin, a known potent inducer of CYP3A4. In vitro inhibition data indicate CYP3A4 may be the major route of clearance for GSK525762 and co-administration of drug therapies which modulate CYP3A4 (i.e.CYP3A4 inhibitors and inducers) is likely to alter the exposure of GSK525762 (i.e. increase or decrease exposure, respectively). The data generated from this current study to justify exclusion criteria on concomitant medications which affect CYP3A4 or Pgp and also inform potential dose modification in case of co-administration with medication affecting CYP3A4 activity. All subjects will undergo a screening visit within 28 days of the first dose of study drug followed by one treatment period and a follow-up visit 7-10 days after the last dose of GSK525762. Subjects in Part 1 will participate in the study for up to 45 days and subjects in Part 2 will participate for up to 56 days.
Single center, open label crossover study with 2 treatment phases in healthy volunteers. The potential of phenotypic drug probes to predict drug-drug interactions between tacrolimus, voriconazole and rifampin will be assessed.
Recently a new model for the interaction of sevoflurane propofol and remifentanil was developed. The potency of any combination of the three drugs is defined as probability that a subject tolerates laryngoscopy without movement response. The model allows to compare the potency of intravenous and inhalation anesthetics. If the model is valid also for other stimuli than laryngoscopy and for other responses (e.g. blood pressure or heart rate increase upon stimulation). If the model is valid equipotent concentrations of sevoflurane and propofol the same remifentanil concentration would be sufficient to suppress hemodynamic response to a given stimulus. This will be investigated it the study.
To evaluate the effect of levothyroxine on the absorption, distribution, metabolization and elimination of sorafenib and safety in healthy male subjects
To evaluate the effect of octreotide acetate injections (200 µg 3 times daily [tid]) on the pharmacokinetics (PK) of telotristat ethyl and its metabolite LP-778902 relative to administration of single-dose telotristat etiprate in healthy male and female subjects
Physicians might be concerned that Adempas may have a metabolic interaction with oral contraceptives (OC) that could decrease the contraceptive efficacy of the OC. The information regarding lack of potential pharmacokinetic interaction has been communicated; there is a need for more re-assurance and further data that there is no interaction between Adempas and OCs. A drug-drug interaction study of riociguat with an OC such as Microgynon in the least vulnerable population for these purposes, i.e. healthy postmenopausal women, is considered adequate to inform about safe use of Adempas with OCs.
The purpose of this study is to evaluate the effects of steady-state telotristat ethyl on the pharmacokinetics (PK) of single-dose fexofenadine in healthy subjects.
This study is designed to evaluate the effects of telotristat ethyl on the pharmacokinetics of midazolam in healthy male and female subjects.