If you need support right now
This page includes language about suicide and self-harm, because that is how the trial's eligibility criteria are written. If reading it has been hard, you do not have to keep going. The services below are free, confidential, and answered by people trained for exactly this.
If you or someone else is in immediate danger, call 000.
- Lifeline — 24/7 crisis support: 13 11 14
- Suicide Call Back Service — 24/7 counselling: 1300 659 467
- 13YARN — 24/7, for Aboriginal and Torres Strait Islander people: 13 92 76
- Beyond Blue — 24/7 mental health support: 1300 22 4636
- Emergency: 000
Outside Australia? The numbers above are Australian and will not work from overseas. Find a Helpline is a free directory of crisis lines in over 130 countries, run by ThroughLine with the International Association for Suicide Prevention. If you are in immediate danger, call your local emergency number.
Voxsanity is not a crisis service, and nothing on this page is medical advice. More Australian services are listed on our support lines page.
Phase 2 study
Recruiting Phase 2
This trial at a glance
Where this trial is running
| Site | City | State or country | Status at this site |
|---|---|---|---|
| Emeritus Research Sydney | Botany | NSW | Recruiting |
voxsanity.com.au · trial sites from public registries · registry record synced 11 October 2026 · not medical advice
Who can join
The official eligibility criteria
Registry text, reproduced exactly. These are the words the trial's sponsor published on ClinicalTrials.gov. They have not been edited, shortened or rewritten, and they are written for researchers rather than for patients.
Inclusion Criteria:
1. Male participants aged 18 to 65 years (inclusive) at the time of informed consent.
2. In a stable (≥6 months) monogamous heterosexual relationship.
3. Self-reported lifelong premature ejaculation (LPE), meeting the ISSM definition.
4. Intravaginal Ejaculatory Latency Time (IELT) ≤1 minute on at least 75% of intercourse attempts during the 4-week run-in period.
5. PEDT (Premature Ejaculation Diagnostic Tool) score ≥11.
6. Normal erectile function (IIEF Questions 1-5 sum score ≥21).
7. Personal distress rated at least "moderate" on the Premature Ejaculation Profile (PEP) after the run-in period.
8. In good general health and medically stable as per investigator's judgment.
9. Willing to attempt intercourse at least 4 times during each 4-week treatment period.
10. For partners of childbearing potential: agreement to use acceptable contraception methods from Screening until 30 days post last dose.
11. Willing to avoid sperm donation from first dose until at least 90 days after the last dose.
12. Willing to limit alcohol intake on dosing days.
13. Ability to provide written informed consent and comply with study requirements.
Exclusion Criteria:
1. IELT \>1 minute on more than 25% of attempts during the run-in period.
2. Fewer than 4 intercourse attempts during the run-in period.
3. Self-rated control of ejaculation as fair, good, or very good on the PEP.
4. Low personal distress ("not at all" or "a little bit") on the PEP.
5. Erectile dysfunction (IIEF Questions 1-5 sum score \<21).
6. Significant anatomical penile deformities or history of penile surgery affecting erection.
7. History of other forms of sexual dysfunction.
8. Untreated or unstable thyroid dysfunction.
9. Recent use (within 4 weeks) of SSRIs, SNRIs, PDE5 inhibitors, MAO inhibitors, alpha blockers, 5-alpha reductase inhibitors, topical anesthetics, or tramadol.
10. History of sexual dysfunction treatments like Botox for PE in the past 6 months.
11. Active or uncontrolled sexually transmitted infections.
12. Severe psychiatric disorders, major depression, or suicidal ideation.
13. Clinically significant laboratory abnormalities or cardiovascular risk factors.
14. Positive drug screen (unless explained by prescription use).
15. Positive for HIV, Hepatitis B, or Hepatitis C.
16. Planned major surgery during study period.
17. BMI outside 18.0-35.0 kg/m² or weight \<50 kg.
Dates on the record
Results, publications and the official record
- No results are posted on the official record yet.
- No publications are listed on the official record yet.
- Official record and contacts on ClinicalTrials.gov – contact details for each site are kept there, and are not copied onto this page.
Sources and dates
- ClinicalTrials.gov – the record this page reformats
- ClinicalTrials.gov processing date: 12 August 2026.
- This page last checked by Voxsanity: 11 October 2026.
Voxsanity reformats data from public registries into this layout. It does not edit, interpret or add to what the registry published.
Not medical advice.
Individual trial records are refreshed on a rolling basis rather than all at once, so a record may be up to several weeks old. Each trial page and trial card shows the date its own record was last synced. Where a record has lagged, its status, sites and enrolment can differ from the current registry state in either direction, so check the registry link on the trial page before acting on them.
Letter for your doctor
A one-page summary of this trial to print or email to your GP. It carries the registry's own record of the trial and its eligibility criteria, and nothing Voxsanity has written about whether it suits you.