Evaluating Tryptophan for Treating BPH Symptoms
Official title: TryptoBPH - Proof-of-concept Study to Evaluate the Safety and Efficacy of Tryptophan in Patients with BPH
Run by Clinical Academic Center (2CA-Braga) · NCT05401032 · Data updated 2026-11-12
This study is testing whether Tryptophan can help men with BPH symptoms feel better without the sexual side effects that come with usual treatments.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 50 Years to 74 Years |
| Sex | Men only |
| Enrollment | 70 (estimated) |
| Sponsor | Clinical Academic Center (2CA-Braga) Academic / other |
| Locations | 1 site (Braga) |
| Status | Recruiting |
| Started | December 20, 2024 |
| Main results expected | December 31, 2026 |
| Study ends | December 31, 2026 |
| Registry record updated | January 6, 2025 |
| Trial ID | NCT05401032 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are men aged 50 to 75 with diagnosed BPH and LUTS who are eligible for Tamsulosin treatment.
✕Probably not a fit
Patients with severe urinary retention, active urinary tract infections, or a history of prostate cancer may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial aims to assess the safety and efficacy of Tryptophan (5-HTP) in men with benign prostatic hyperplasia (BPH) and associated lower urinary tract symptoms (LUTS). The study will randomly assign eligible participants to receive either Tamsulosin or 5-HTP to compare their effects on symptom relief. The trial is designed to explore a novel pharmacological approach that may improve symptoms without the sexual side effects commonly associated with current BPH treatments. Conducted at the Hospital de Braga, this single-center trial will provide insights into alternative therapies for BPH.
Why it matters
Potential benefit: If successful, this study could offer a new treatment option for men suffering from BPH that minimizes side effects.
How similar studies have gone: While the use of Tryptophan for BPH is a novel approach, similar studies exploring alternative treatments for LUTS have shown promise.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Written informed consent; * Male patients with BPH for which tamsulosin is the therapeutic option per SoC; * Aged ≥50 and less than 75 years old; * With prostate volume ≥30 cm3 by TRUS; * Diagnosed with LUTS defined by a stable IPSS total score ≥13 points. Exclusion Criteria: * Patients with post-void bladder residual volume ≥250 ml; * Patients with intravesical obstruction from any cause other than BPH; * History of any procedure considered an intervention for BPH; * Patients with active urinary tract infection; * History of recurrent urinary tract infections; * Current prostatitis or diagnosis of chronic prostatitis; * History of prostate or invasive bladder cancer; * Use of 5 α-reductase inhibitors within 6 months; * Phytotherapy within 2 weeks before entry; * Use of serotonin reuptake inhibitors or monoamine oxidase inhibitors; * Patients with acute or chronic kidney failure; * Patients with diagnosed or suspicion of intolerance to lactose; * Patients submitted to general anesthesia in the past 4 weeks; * Known intellectual disability that may hampers giving informed consent and would make the patient inappropriate for entry into this study, in the judgment of the investigator.
Where it's running
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Clinical Academic Center - Braga, Association (2CA-Braga)
Braga, Portugal Recruiting
Study contacts
- Principal investigator: Emanuel Dias — Hospital de Braga
- Study coordinator: Mónica Gonçalves
- Email: 2ca@ccabraga.org
- Phone: +351 253 027 249
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Transurethral Thermodilatation vs Prostatic Urethral Lift for BPH in men 50–80
This study tests whether Prolieve can match UroLift in relieving BPH symptoms in men 50–80 who haven’t had enough relief from medicines.
-
MISTER: Steam Therapy for BPH in real-world practice
This study tests Rezūm steam therapy for men with moderate-to-severe BPH and LUTS to see how well it works in real-world clinics.
-
INTUPRO for benign prostate enlargement symptoms
This trial will try INTUPRO to see if it improves urinary symptoms in men 45 and older with enlarged prostates (BPH).
-
Blue diode laser vaporization for enlarged prostate (BPH)
It tests whether a 450 nm blue diode laser vaporization can improve urinary symptoms in men aged 50 and older with symptomatic BPH.
-
Comparing MiLEP and standard EEP for treating prostate enlargement
This study is testing a new method called MiLEP against the standard treatment for prostate enlargement to see which one works better for men with urinary problems.
-
Ultrasound imaging to assess lower urinary tract symptoms
This study is testing a new, cost-effective ultrasound method to see how well it can measure bladder function in men with lower urinary tract symptoms and benign prostatic hyperplasia.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.