# Evaluation of Doxycycline Post-exposure Prophylaxis to Reduce Sexually Transmitted Infections in PrEP Users and HIV-infected Men Who Have Sex With Men

> **NCT03980223** · PHASE4 · COMPLETED · sponsor: **University of California, San Francisco** · enrollment: 641 (actual)

## Conditions studied

- Gonorrhea
- Chlamydia
- Syphilis

## Interventions

- **DRUG:** Doxycycline Hyclate Delayed-Release 200 mg

## Key facts

- **NCT ID:** NCT03980223
- **Lead sponsor:** University of California, San Francisco
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2019-11-26
- **Primary completion:** 2023-06-12
- **Final completion:** 2023-06-12
- **Target enrollment:** 641 (ACTUAL)
- **Last updated:** 2024-07-12

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03980223

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03980223, "Evaluation of Doxycycline Post-exposure Prophylaxis to Reduce Sexually Transmitted Infections in PrEP Users and HIV-infected Men Who Have Sex With Men". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT03980223. Licensed CC0.

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