# Pharmacokinetic and Safety Study of a 90 Day Intravaginal Ring Containing Tenofovir

> **NCT03670355** · PHASE1 · COMPLETED · sponsor: **National Institute of Allergy and Infectious Diseases (NIAID)** · enrollment: 49 (actual)

## Conditions studied

- HIV Infections

## Interventions

- **DRUG:** Tenofovir (TFV) IVR
- **DRUG:** Placebo IVR

## Key facts

- **NCT ID:** NCT03670355
- **Lead sponsor:** National Institute of Allergy and Infectious Diseases (NIAID)
- **Sponsor class:** NIH
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2019-01-02
- **Primary completion:** 2019-09-25
- **Final completion:** 2019-09-25
- **Target enrollment:** 49 (ACTUAL)
- **Last updated:** 2025-11-13


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03670355

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03670355, "Pharmacokinetic and Safety Study of a 90 Day Intravaginal Ring Containing Tenofovir". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT03670355. Licensed CC0.

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