Combining Botulinum Toxin A and Tadalafil for Diabetic Men with Erectile Dysfunction

Evaluation of Efficacy of Botulinum Toxin A Plus Oral Tadalafil 5 mg in Diabetic Men With Erectile Dysfunction Not Responding to Approved Oral or Intracorporeal Vasoactive Treatments.

Phase2; Phase3 Interventional Aswan University Hospital · NCT06583590

This study is testing if combining a muscle relaxant with a common erectile dysfunction pill can help diabetic men who haven't found relief with regular treatments.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Enrollment32 (estimated)
Ages21 Years and up
SexMale
SponsorAswan University Hospital Academic / other
Locations1 site (Aswān, Aswan Governorate)
Trial IDNCT06583590 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety and effectiveness of combining Botulinum toxin A with oral Tadalafil in diabetic men suffering from erectile dysfunction that has not responded to standard treatments. A total of 32 male patients will be recruited from outpatient clinics at Cairo and Aswan Universities. Participants will undergo a series of assessments, including clinical examinations and questionnaires, before and after receiving the treatment over a three-month period. The study aims to determine the durability of the treatment's effects through various evaluation methods.

Who should consider this trial

Good fit: Ideal candidates are adult married men with controlled diabetes and severe erectile dysfunction unresponsive to approved pharmacological treatments.

Not a fit: Patients with cardiovascular diseases, unstable psychiatric conditions, or anatomical abnormalities affecting erectile function may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new effective option for diabetic men with erectile dysfunction who do not respond to existing therapies.

How similar studies have performed: While the combination of these treatments is innovative, similar approaches have shown promise in other studies, suggesting potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult controlled diabetic married men who proved to be vasculogenic ED by Penile Duplex.
* Men who had shown an insufficient response for at least 3 months to the registered PDE5-Is at the highest approved dose, either on-demand or daily, or to PGE1 ICIs.
* Severe erectile dysfunction (erection hardness score ≤ E3 after intracavernosal injection of PGE-1).

Exclusion Criteria:

* Men who had cardiovascular disease interfering with sexual activity.
* Men with history of an unstable psychiatric conditions
* Presence of penile anatomical abnormalities that would significantly impair erectile function.
* History of spinal or pelvic radical surgery.

Where this trial is running

Aswān, Aswan Governorate

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Erectile Dysfunction With Diabetes Mellitus
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.