25 Years of Andropenis®: Non-Surgical Penis Enlargement and Effective Peyronie’s Disease Treatment (From 10 Hours in 2001 to 4-6 Hours in 2026)

Are you worried about your penis size? Do you feel that a smaller penis affects your confidence, your sex life, or your relationships? Or maybe you’re dealing with a penile curvature caused by Peyronie’s disease that brings pain, shortening, or difficulties during intercourse?

You are not alone. Thousands of men worldwide are looking for real, safe, and non-surgical solutions to increase penis size or correct curvature.

In this article, we share the complete and updated story of Andropenis®, the most clinically studied penis extender in the world. From its first clinical study presented in 2001 by Dr. Eduardo A. Gómez de Diego, to the modern protocols that deliver visible results with just 4 to 6 hours per day.

All backed by over 25 years of scientific evidence, real data, and no exaggerated promises.

If you’re looking for non-surgical penis enlargement, increased girth, or an effective treatment for Peyronie’s disease, keep reading. This is the most complete and up-to-date review on penile traction therapy you’ll find.

The Science Behind It: Tissue Traction

Human tissue is remarkably intelligent. When subjected to controlled and progressive traction, it responds by creating new cells. This biological process — known as cytokinesis or cellular hyperplasia — is the same mechanism used in modern medicine to expand skin for burn victims, lengthen bones, and even in certain ancient cultural practices (such as the neck rings worn by “giraffe women” in Africa or traditional penile weighting in some cultures).

The Andropenis® applies this exact principle in a safe and medically designed way. It exerts a gradual traction force ranging from 600 to 1,500 grams. Its sophisticated design includes a comfortable base ring, dynamic metal rods, and a soft silicone glans support, allowing consistent traction while remaining comfortable and minimizing the risk of tissue damage.

The Pioneering 2001 Study: Where It All Began

In February 2001, Dr. Eduardo A. Gómez de Diego presented the results of the first clinical study on the Andropenis® at the First Virtual Congress of Sexology and Sexual Education in the Hispanic World. This groundbreaking study, conducted at the Andromedical Clinic in Madrid, Spain, marked a major milestone in the field of non-surgical penis enlargement.

Download the original 2001 study here

Key Data from the Original 2001 Study

• 37 healthy men aged 22 to 60 years old
• No prior penile surgery or penile diseases
• Daily use: 10 hours per day for 3 to 6 months
• Progressive tension: 600 g (month 1) → 900 g (month 2) → 1,100–1,200 g (months 3–6

Main Results of the 2001 Study

• Erect length gain: Average of +0.47 cm per month. After 6 months: up to +3.33 cm (27.5% average increase).
• Flaccid length gain: Average of +0.48 cm per month.
• Girth (circumference) increase: +0.84 cm in both flaccid and erect state (7–9% growth)
• The growth was linear and directly proportional to the time of use (strong statistical correlation, R² = 0.577).
• Age had no influence on results (r = 0.008, p = 0.961). The device worked equally well for men in their 20s and men aged 60.
• Results were more consistent in erect length than in flaccid length.

This pioneering study was the first to demonstrate with rigorous scientific standards that mechanical traction could produce real, measurable, and permanent penis enlargement without surgery.

How Andropenis® Has Evolved Over 25 Years: From 10 Hours to Just 4-6 Hours a Day

The original 2001 device already worked well, but technology and design have advanced significantly since then. Andromedical has continuously invested in improving comfort, effectiveness, and user compliance.

Key improvements over the years include:

• Lighter, more breathable, and softer materials (significantly reducing irritation)
• More precise and ergonomic traction system
• Better force distribution to minimize discomfort on the glans
• Specialized designs such as Andropeyronie®, created specifically for penile curvature

The most important result of this evolution?

Today, you no longer need to wear the device for 10 hours a day. Current clinical protocols recommend just 4 to 6 hours daily (which can even be split into 2–3 sessions), while achieving equal or even better results. This dramatic reduction in daily usage time has greatly improved users’ quality of life. Many men now comfortably wear the device while working, walking, or watching TV.

What Real Results Can You Expect Today with Andropenis®?

Thanks to years of clinical experience and multiple independent studies, here’s what you can realistically achieve:

• Average length gain: 1.5 to 3 cm (0.6 to 1.2 inches) in both flaccid and erect length after 4–6 months of proper use.
• Girth increase: Up to +0.8 to 1 cm (0.3 to 0.4 inches) in circumference.
• Permanent results: Gains are maintained long-term with minimal maintenance.
• Improved erectile function: Several studies show significant improvements in the IIEF score (up to +36% in some cases).
• Peyronie’s disease: Average curvature reduction of 20–50%, recovery of lost length, and noticeable pain reduction.

Results vary depending on consistency, genetics, and adherence, but the majority of motivated users achieve visible and satisfying improvements.

Updated Scientific Evidence in 2026: Over 20 Years of Independent Studies

Since the original 2001 study, penile traction therapy (PTT) has been validated in dozens of scientific papers.

• Recent meta-analyses confirm that traction is effective at reducing curvature in Peyronie’s disease (up to -23 degrees when combined with other treatments).
• Studies with second-generation devices show better results with fewer daily hours.
• The American Urological Association (AUA) and European guidelines recommend penile traction therapy as a first-line non-surgical treatment for Peyronie’s disease.
• Research on penile dysmorphia shows significant improvements in both physical and psychological well-being.

The evidence is clear: Andropenis® and penile traction therapy are among the most studied and safest options available for non-surgical penis enlargement and Peyronie’s treatment.

Who is Andropenis® specifically recommended for

This treatment is ideal if:

• You are looking to lengthen the penis naturally and without surgery.
• You have micropenis or penile dysmorphia and want to regain your confidence.
• You suffer from Peyronie’s disease (curvature, fibrous plaque, shortening, or pain).
• You want to recover length after prostate surgery or a prosthetic implant.
• You wish to improve girth and the quality of erections

It works for men of all ages and requires no anesthesia, hospitalization, or time off work.

Andropenis® vs Other Options: A Clear Comparison

Safety and Side Effects

Clinical studies confirm that Andropenis® is safe when used as directed. Possible temporary side effects include mild redness or slight discomfort during the first days. These disappear quickly. It does not affect fertility, sensitivity, or erectile function. Many users actually report improved sexual performance.

Frequently Asked Questions (FAQ)

Conclusion: 25 Years Changing Lives

What began in 2001 as a pioneering study requiring 10 hours of daily use has evolved by 2026 into a mature, comfortable, and highly effective therapy.

Thanks to the continuous development of Andropenis®, thousands of men are now achieving non-surgical penis enlargement, increased girth, and correction of penile curvature with just 4–6 hours per day.

If you’re tired of feeling insecure about your size or if Peyronie’s disease is limiting your intimate life, this is a real, scientifically backed solution with more than 25 years of experience.

Ready to take the first step?s

Explore the different Andropenis® and Andropeyronie® models on the official website or consult with a men’s health specialist.

Thousands of men have already regained confidence and improved their quality of life. You can be next.