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An Open-Label Study in HIV+ Patients to Determine the Effects of Nevirapine (Viramune) on the Pharmacokinetics of Clarithromycin and Activity of Cytochrome 3A4.

Information source: NIH AIDS Clinical Trials Information Service
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: HIV Infections

Intervention: Erythromycin (Drug); Nevirapine (Drug); Clarithromycin (Drug)

Phase: Phase 1

Status: Completed

Sponsored by: Boehringer Ingelheim


To evaluate the potential pharmacokinetic interaction between nevirapine and clarithromycin, and to determine the effects of nevirapine on cytochrome P450 3A4 (CYP3A4) activity in vivo.

Clinical Details

Official title: An Open-Label Study in HIV+ Patients to Determine the Effects of Nevirapine (Viramune) on the Pharmacokinetics of Clarithromycin and Activity of Cytochrome 3A4.

Study design: Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Primary Purpose: Treatment

Detailed description: The study is conducted in two separate groups. Patients in Group I receive clarithromycin orally for 32 days and nevirapine orally for 28 days. Patients in Group II receive erythromycin intravenously on days 0, 14, 28, and 43 and nevirapine orally for 28 days.


Minimum age: 18 Years. Maximum age: 65 Years. Gender(s): Both.


Inclusion Criteria Concurrent Medication: Allowed: Antiretroviral drugs (i. e., zidovudine, zalcitabine, stavudine, lamivudine, didanosine, indinavir, saquinavir) provided that there has been no change in dosing of the medication > 25% within 4 weeks of study entry. Patients must have:

- HIV positive status.

- CD4 count >= 100 cells/mm3.

Prior Medication: Allowed: Patients may be on clarithromycin at study entry. Exclusion Criteria Co-existing Condition: Patients with the following conditions are excluded: Malabsorption, severe chronic diarrhea, or inability to maintain adequate oral intake. Concurrent Medication: Excluded: Macrolide antibiotics (erythromycin, azithromycin, dirithromycin), azole fungals (ketoconazole, fluconazole, itraconazole), rifampin, rifabutin, phenytoin, terfenadine, astemizole, cisapride, triazolam, midazolam, other non-nucleoside reverse transcriptase inhibitors, antibiotics containing clavulanic acid, and Augmentin. Patients with the following prior conditions are excluded:

- History of drug allergy or known drug hypersensitivity.

- History of clinically important disease including hepatic, renal, cardiovascular, or

gastrointestinal disease. Prior Medication: Excluded:

- Investigational drugs or antineoplastic agents within 12 weeks of study entry.

- Participation in a clinical trial that used ERMBY within one year of study entry.

- Systemic treatment with drugs known to be potent hepatic enzyme inducers or

inhibitors (e. g., oral macrolide antibiotics, azole antifungals, cimetidine, rifampin, rifabutin, and carbamazepine) within 28 days of study entry.

- Use of protease inhibitors; ritonavir, nelfinavir, indinavir, or non-nucleoside

reverse transcriptase inhibitor compounds e. g., delavirdine) within 4 weeks of study entry. Prior Treatment: Excluded: Radiotherapy within 12 weeks of study entry. Risk Behavior: Excluded: Current history (within the last year) of IVDA, ETOH, or substance abuse.

Locations and Contacts

South Florida Bioavailability Clinic, Miami, Florida 331813405, United States
Additional Information

Last updated: June 23, 2005

Page last updated: August 23, 2015

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