Randomized, double-blind, placebo-controlled crossover study of ejaculatory disorder caused by orally administered silodosin in healty volunteer men

Randomized, double-blind, placebo-controlled crossover study of ejaculatory disorder caused by orally administered silodosin in healty volunteer men - Crossover study of ejaculatory disorder caused by silodosin

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000000839

Enrollment

Registered

2007-10-01

Start date

2007-10-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Japanese healthy volunteer men

Interventions

Silodosin (Wash-out) Placebo Placebo (Wash-out) Silodosin

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: Men who are not disabled in ejaculating Men who are not disabled in achieving an orgasm Men who can refrain from drinking alcohol before ejaculation

Exclusion criteria

Exclusion criteria: Men who are taking alpha adrenergic receptor blockade Men who have received transurethral resection of prostate (TUR-P) Men who have retrograde ejaculation Men who have received retroperitoneal lymph node dissection (RPLND) Men who have been diagnosed erectile dysfunction (ED) Men who have been diagnosed diabetes

Design outcomes

Primary

Measure	Time frame
Numerical Rating Scale(NRS)	—

Countries

Japan

Contacts

Public ContactFumitaka Shimizu

Graduate school of medicine, Juntendo University Department of Urology

fshimizu-jua@umin.ac.jp

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026