# The Pharmacological Basis for the Increase in Visual Time Constants Induced by Single Oral Doses of Sildenafil

> **NCT00463957** · NA · UNKNOWN · sponsor: **University of Cambridge** · enrollment: 12 (—)

## Conditions studied

- Erectile Dysfunction

## Interventions

- **DRUG:** sildenafil
- **DRUG:** tadalafil
- **DRUG:** placebo

## Key facts

- **NCT ID:** NCT00463957
- **Lead sponsor:** University of Cambridge
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2006-08
- **Primary completion:** —
- **Final completion:** —
- **Target enrollment:** 12 (—)
- **Last updated:** 2010-01-12


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00463957

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00463957, "The Pharmacological Basis for the Increase in Visual Time Constants Induced by Single Oral Doses of Sildenafil". Retrieved via AI Analytics 2026-06-14 from https://api.ai-analytics.org/clinical/NCT00463957. Licensed CC0.

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