A Two Way Cross Over Pharmacokinetic Interaction Study Between Raltegravir and Amlodipine in Healthy Volunteers

• Status: Completed
• Trial end date: 2013-09-01
• Target enrollment: 0
• Participant gender: All

Summary

The purpose of the study is to look at the levels of an HIV medication (raltegravir) in the blood, and how it is affected if raltegravir is taken at the same time as another medicine for high blood pressure (amlodipine). Many patients with HIV will also have high blood pressure, so it is important to know which drugs for each of these conditions can be taken together without affecting how well they work individually.

Over a 3 week period, participants took amlodipine for 2 weeks, and raltegravir for 2 weeks, with the middle week being on both drugs. The investigators will look at and compare the levels of these two drugs in the blood after subjects have taken them separately and both together.

This study is randomised into two groups with both study medications received by all participants in a three-period crossover pattern; randomisation determined which medication was taken first. Once randomised allocation was performed, medications were administered in an open-label fashion.

• Phase: Phase 1
• Accepts Healthy Volunteers?: Accepts Healthy Volunteers

Details

• Lead Sponsor: St Stephens Aids Trust
• Treatments: Amlodipine; Raltegravir Potassium

Criteria

Inclusion Criteria:

Subjects must meet all of the following inclusion criteria within 28 days prior to the baseline visit:

• The ability to understand and sign a written informed consent form, prior to participation in any screening procedures and must be willing to comply with all study requirements

• Male or non-pregnant, non-lactating females

• Between 18 to 65 years, inclusive

• Body Mass Index (BMI) of 18 to 35 kg/m2, inclusive.

• Women of childbearing potential (WOCBP) must be using an adequate method of contraception to avoid pregnancy throughout the study and for a period of at least 12 weeks after the study

• Willing to consent to their personal details being entered onto The Over-volunteering Prevention Scheme (TOPS) database

• Willing to provide photographic identification at each visit.

• Registered with a GP in the UK

Exclusion Criteria:

Subjects who meet any of the following exclusion criteria are not to be enrolled in this study.

• Any significant acute or chronic medical illness including hypertension (BP persistently >140/90 mmHg) or hypotension (BP persistently <90/60 mmHg)

• Evidence of organ dysfunction or any clinically significant deviation from normal in physical examination, vital signs, ECG or clinical laboratory determinations

• Positive blood screen for hepatitis B surface antigen and/or C antibodies

• Positive blood screen for HIV-1 and/or 2 antibodies

• Current or recent (within 3 months) gastrointestinal disease

• Clinically relevant alcohol or drug use (positive urine drug screen) or history of alcohol or drug use considered by the Investigator to be sufficient to hinder compliance with treatment, follow-up procedures or evaluation of adverse events. Smoking is permitted, but tobacco intake should remain consistent throughout the study

• Exposure to any investigational drug or placebo within 3 months of first dose of study drug

• Use of any other drugs (unless approved by the Investigator), including over-the-counter medications and herbal preparations, within two weeks prior to first dose of study drug, unless approved/prescribed by the Principal Investigator as known not to interact with study drugs.

• Females of childbearing potential without the use of effective non-hormonal birth control methods, or not willing to continue practising these birth control methods for at least 12 weeks after the end of the treatment period

• Previous allergy to any of the constituents of the pharmaceuticals administered in this trial

• Lactose intolerance