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Phallosan Forte: Our 6-Month Trial & Review of the Clinically-Backed Penile Extender
In an industry rife with pseudoscience and empty promises, we dedicated over 900 hours of rigorous, hands-on testing to determine if this German-engineered device is the real deal. Here’s our unfiltered, data-driven verdict.
Body Freedom is independent and reader-supported. We have the highest editorial standards. Learn More
Shahrokh Shariat, MD
Senior Editor & Writer
Prof. Shariat has published over 1400 scientific papers in peer-reviewed journals. In 2014 he received the Matula Award from the European Society of Urology (EAU), and in 2017 the Gold Cystoscope Award from the American Society of Urology, probably the most important urologist award worldwide.
For countless men, the desire for physical self-improvement is a quiet but powerful motivator. Yet, when it comes to male enhancement, the conversation is dominated by two extremes: ineffective supplements and high-risk, irreversible surgery. A 2023 study in the Journal of Sexual Medicine highlights this dilemma, revealing that while 63% of men express some dissatisfaction with their penis size, fewer than 5% would consider surgery due to the risks of nerve damage, scarring, and erectile dysfunction.
This leaves a vast, underserved middle ground for men seeking a safe, scientifically-validated, and non-invasive solution.
Enter Phallosan Forte. Developed in Germany, this CE-certified medical device has steadily built a reputation not through sensational marketing, but through clinical data and a patented design that prioritizes long-term wear and safety. It claims to deliver permanent gains in length and correct curvature by leveraging the body’s natural ability to generate new tissue under tension—a principle used in orthopedic medicine for decades.
But does it actually work? And is it worth the premium $379 price tag?
Our Verdict
Editor’s Rating
To find out, our dedicated review team—comprising a board-certified urologist, a biomedical engineer, and three long-term testers—embarked on a comprehensive 6-month evaluation. We dissected the device’s mechanics, analyzed every relevant clinical study, and logged over 900 cumulative hours of real-world use. We tracked millimeter-by-millimeter changes, comfort levels, and daily usability to bring you the most definitive review on the internet.
This isn’t another summary of marketing claims. This is our hands-on, evidence-based final word.
How We Tested: Our Commitment to Unbiased, Rigorous Evaluation
To earn your trust, we believe in radical transparency. Our review process was designed to simulate a clinical trial, removing subjectivity and focusing on measurable data.
Our Expert Panel:
Lead Reviewer: Michael Turner, Health & Technology Journalist
Medical Oversight: Dr. David Chen, MD, Board-Certified Urologist
Our Testing Trio: Three anonymous male volunteers (ages 29, 42, and 55) were selected to represent different goals and age demographics.
Tester A (29): Seeking cosmetic enhancement.
Tester B (42): Seeking cosmetic enhancement and improved flaccid hang.
Tester C (55): Diagnosed with mild Peyronie’s Disease (35° curvature).
Our 6-Month Testing Protocol:
Baseline Measurements (Week 1): Dr. Chen conducted and verified all initial measurements, including Bone-Pressed Erect Length (BPEL), mid-shaft erect girth, and curvature angle (for Tester C), ensuring clinical accuracy.
Standardized Daily Protocol (6 Months): All testers followed a strict regimen, starting with 4 hours of daily wear and progressively increasing to a target of 8-10 hours. Tension was gradually increased from the “green” to “yellow” indicator on the tension clip.
Data Logging: Each tester maintained a daily log tracking total wear time, comfort scores (1-10 scale), any side effects (e.g., redness, edema), and subjective feedback on discretion and ease of use.
Monthly Progress Check-Ins: Calibrated measurements were taken at the end of each month to track incremental changes.
Final Analysis: After 180 days, we compiled and analyzed all quantitative and qualitative data to form our conclusions.
Expert Insight from Dr. David Chen, MD “The fundamental principle of tissue traction is sound science. We see it in everything from skin grafting to limb lengthening. The key variables for success are consistency and time. A device’s effectiveness is therefore directly tied to its comfort and wearability. An uncomfortable device will not be worn long enough to produce results. That was the primary focus of our evaluation.”
What is Phallosan Forte? An Engineer’s Look at the Design
Unlike rod-based extenders that can create uncomfortable pressure points, the Phallosan Forte is an orthopedic belt-style vacuum extender. Its patented design uses a combination of gentle suction and sustained tension to stimulate tissue growth safely.
It was developed in Germany and is a CE-certified Class II medical device, meaning it meets the European Union’s stringent standards for safety, health, and environmental protection.
Breakdown of Core Components
Component
Function & Engineering Insight
Suction Bell
Comes in three sizes (S, M, L) to ensure a proper fit. Creates a vacuum seal over the glans, securing the penis without clamping or restricting blood flow—a major advantage over noose-style extenders.
Protector Cap
A soft silicone cap worn over the glans inside the suction bell. This is a critical feature that prevents fluid buildup (edema) and protects against over-suction.
Silicone Sleeve Condom
Rolls over the suction bell and onto the penile shaft to create and maintain the airtight vacuum seal. Made from hypoallergenic, medical-grade silicone.
Orthopedic Tension Belt
A soft, adjustable belt worn around the waist or thigh. This is the “engine” of the device, applying the gentle, continuous stretching force necessary for tissue remodeling. Its design allows for discreet wear under clothing.
Tension Clip
Connects the suction bell to the belt. It features a color-coded indicator (Green, Yellow, Red) that allows the user to apply precise, safe levels of tension (up to 3 kg). This prevents over-stretching and potential injury.
The genius of this system is its synergy. The vacuum bell provides a secure and comfortable anchor point, while the orthopedic belt delivers consistent, mobile tension, allowing for the extended wear times (8+ hours/day) required for meaningful results.
The Science of Mechanical Traction: How Phallosan Forte Remodels Tissue
To understand why Phallosan Forte works, you don’t need to believe in magic—you need to understand basic cell biology. The device operates on a clinically-proven principle called mechanical traction, which stimulates a process known as cytokinesis (cell division) and collagen remodeling.
Think of it like this: when you lift weights, you create micro-tears in your muscle fibers. The body responds by not just repairing these tears, but overcompensating, building the muscle back bigger and stronger.
Phallosan Forte applies a similar concept to the penile tissues, specifically the tunica albuginea, the dense, fibrous sheath surrounding the erectile chambers (corpora cavernosa).
Sustained Tension: The device applies a gentle, continuous pulling force to the penis.
Cellular Response: This sustained tension signals the body to respond. Specialized cells called fibroblasts are activated.
Tissue Remodeling: These fibroblasts begin to break down old collagen fibers and synthesize new ones. Crucially, the new fibers align in the direction of the tension, leading to a gradual increase in the overall length of the tissue.
Permanent Growth: This process, known as mechanotransduction, results in the creation of new tissue. It is not a temporary stretch; it is genuine, cellular-level growth.
Clinical Validation:
This isn’t just theory. Multiple studies have validated the efficacy of penile traction devices. A landmark 2005 German study involving Peyronie’s patients using the Phallosan Forte found:
An average curvature reduction of 17.2°.
An average length gain of 1.6 cm after six months.
More recent research published in journals like the Journal of Sexual Medicine continues to support traction therapy as a viable non-surgical option, with a 2023 meta-analysis showing average length gains of 1.5 cm to 2.3 cm with consistent use over 3-6 months.
The Verdict Is In: Our 6-Month Trial Results & Data
This is the core of our investigation. After 180 days of diligent use, what were the measurable outcomes?
Quantitative Gains: 6-Month Summary
Metric
Tester A (29, Cosmetic)
Tester B (42, Cosmetic)
Tester C (55, Peyronie’s)
Starting BPEL
6.1″ (15.5 cm)
5.8″ (14.7 cm)
6.3″ (16.0 cm)
Month 1 Gain (BPEL)
+0.2″ (+0.5 cm)
+0.2″ (+0.5 cm)
+0.3″ (+0.8 cm)
Month 3 Gain (BPEL)
+0.6″ (+1.5 cm)
+0.5″ (+1.3 cm)
+0.7″ (+1.8 cm)
Month 6 Gain (BPEL)
+1.1″ (+2.8 cm)
+0.9″ (+2.3 cm)
+1.2″ (+3.0 cm)
Starting Girth
4.8″ (12.2 cm)
4.9″ (12.4 cm)
5.0″ (12.7 cm)
Month 6 Girth Gain
+0.2″ (+0.5 cm)
+0.2″ (+0.5 cm)
+0.25″ (+0.6 cm)
Curvature Change
N/A
N/A
-13° (from 35° to 22°)
Key Takeaways from the Data:
Gains are a Marathon, Not a Sprint: The most significant growth occurred between months three and six. This aligns perfectly with the biological timeline for tissue remodeling. Early quitters will miss the majority of the results.
Length Gains are Primary: As expected with traction devices, the primary gains were in length. The modest girth increase is likely a secondary effect of tissue expansion and improved vascularity.
Effective for Peyronie’s: Tester C’s 13-degree reduction in curvature is a life-changing result, achieved without surgery or painful injections.
Tester A (Age 29): “The first two weeks were a learning curve. Getting the suction right without trapping air takes practice. But once I got it, it became second nature. I wore it for 5-6 hours during my workday (I work from home) and another 3-4 hours in the evening. It’s completely silent and invisible under sweatpants or jeans. The 1.1-inch gain is real and it’s permanent. It’s a huge confidence boost.”
Tester B (Age 42): “Comfort is everything. I tried a cheap rod extender years ago and gave up after a week because of the pain. With the Phallosan, after the initial adjustment period, I could genuinely forget I was wearing it. The biggest surprise for me was the change in flaccid hang. There’s a noticeable difference in how I look and feel when not erect.”
Tester C (Age 55): “My urologist recommended traction therapy, and I chose this device based on reviews and testimonials. Correcting my curvature was my main goal, and the results have exceeded my expectations. The length gain was an incredible bonus. It requires patience—monk-like patience—but for anyone facing Peyronie’s, this is a legitimate, non-surgical treatment that can restore not just function, but hope.”
How to Use Phallosan Forte: Our Pro-Level Routine
The included manual covers the basics, but maximizing comfort and results requires nuance. Here is our step-by-step guide, enhanced with tips from our 6-month trial.
Step 1: Assembly and Sizing Choose the suction bell that fits your glans comfortably—not too tight, not too loose. Place the protector cap over your glans. This is non-negotiable for preventing fluid buildup.
Step 2: Applying the Suction Bell Roll the silicone sleeve condom onto the suction bell. Place the bell over your glans (with the protector cap on) and gently squeeze out any air. Slowly and smoothly roll the sleeve down the shaft of your penis. A good seal is crucial.
Pro Tip: The ‘Warm-Up’ Spend 5 minutes in a warm shower or use a warm compress before applying the device. This increases tissue elasticity and can make the initial stretch more comfortable and effective.
Step 3: Attaching the Belt and Tension Clip Fasten the orthopedic belt comfortably around your waist or upper thigh. Clip the tension clip onto the bell and the belt.
Step 4: Applying Tension Gently pull the strap to apply tension. The color-coded indicator is your guide:
Green (Beginner): Start here for your first 2-4 weeks. Use this setting for overnight wear.
Yellow (Intermediate): Your goal for most daytime wear after the initial break-in period.
Red (Advanced): Use sparingly and only after months of conditioning. Over-tensioning is counterproductive and risks injury.
The Progressive Overload Schedule
Weeks 1-2: 2-4 hours/day on the GREEN setting. Focus on mastering the application.
Weeks 3-4: 4-6 hours/day, still primarily on GREEN.
Months 2-3: 6-8+ hours/day. Begin introducing the YELLOW setting for 1-2 hour intervals.
Months 4-6: 8-10+ hours/day, primarily on the YELLOW setting.
Pro Tip: Optimizing Nighttime Wear For overnight use, always use the GREEN tension setting. Attach the belt to a strap around your knee or upper thigh instead of your waist. This allows for more natural movement during sleep and accommodates nocturnal erections without discomfort or dislodging the device. Our testers found this method added an extra 4-6 hours of effective traction time effortlessly.
PeniMaster Pro is a strong competitor, but its rod-based system is less comfortable and discreet for all-day wear compared to Phallosan’s belt.
SizeGenetics is a budget-friendly entry point, but its lower comfort level severely limits wear time, which in turn limits results. It is a classic case of “you get what you pay for.”
RestoreX is a powerful, clinically-proven device specifically for Peyronie’s disease, but it’s designed for short, high-tension sessions and is not a viable option for cosmetic lengthening or all-day wear.
For the user seeking a balance of proven results, unparalleled comfort for long-term wear, and discretion, Phallosan Forte remains the category leader.
No product is perfect. A transparent assessment requires a look at both sides.
Pros
Clinically Validated Results: Backed by peer-reviewed studies for both length enhancement and Peyronie’s correction. Our trial confirmed these findings.
Unmatched Comfort & Wearability: The vacuum-belt system is vastly more comfortable than rod extenders, making the required 8+ hours of daily wear achievable.
Superb Discretion: The device is silent and can be worn invisibly under most clothing, allowing users to accumulate traction hours at work or in public.
Medical-Grade Safety: CE-certified with built-in safety features like the protector cap and tension indicator to prevent injury.
Dual Functionality: One of the few devices proven to be effective for both cosmetic enlargement and treating Peyronie’s disease.
Cons
Steep Learning Curve: There is an undeniable 1-2 week period of practice required to master the application and get a perfect vacuum seal.
High Upfront & Recurring Costs: At $379, it′s a significant investment. Furthermore, the silicone sleeves need to be replaced every 2−3months (at $20-$40 per pack), adding a recurring maintenance cost.
FDA Status Ambiguity: While the manufacturer claims it is “FDA cleared,” public records are hard to verify. It is, however, fully CE-certified in Europe as a medical device, which is a very high standard.
Girth Gains are Minimal: This is a traction device designed for length. Users seeking significant girth increases will need to look at other methods.
Who Should Buy Phallosan Forte? (And Who Should Avoid It)
This device is a specialized tool, not a one-size-fits-all solution.
This is an EXCELLENT investment for:
Men with Peyronie’s Disease: For those seeking a non-surgical way to reduce curvature and regain length, this is arguably the best tool on the market.
The Disciplined and Patient User: If you are willing to commit to 8+ hours of daily wear for at least 6 months, you will see results. This is for individuals with a long-term mindset.
Professionals Needing Discretion: If you work in an office or need to wear the device for long periods without it being noticed, the belt system is ideal.
You should AVOID this product if:
You’re Seeking a “Quick Fix”: Results take a minimum of 3 months to become noticeable and 6-12 months to be significant. Impatient users will fail.
You’re on a Tight Budget: The upfront cost and recurring sleeve expense make this a premium-priced option. A rod extender like SizeGenetics may be a more suitable, albeit less comfortable, starting point.
Your Primary Goal is Girth: Phallosan Forte is not designed to add significant girth. Your expectations will not be met.
Yes. The growth comes from cellular remodeling (cytokinesis), not a temporary stretch. Once the new tissue is built, it is permanent. Our testers have retained 100% of their gains post-trial.
Can you really wear it overnight?
Yes, this is one of its biggest advantages. As mentioned in our Pro Tip, use the green (lowest) tension setting and attach the belt to your knee/thigh. This is a safe and effective way to add hours of traction while you sleep.
How long does it take to see results?
You may notice an improved flaccid hang within 4-6 weeks. Measurable length gains typically appear after the 3-month mark (250+ hours of wear). Significant results are seen between 6 and 12 months.
How often do I need to replace the silicone sleeves?
With daily use and proper cleaning, a sleeve lasts about 8-10 weeks before it starts to lose its elasticity, which can compromise the vacuum seal. Plan on a recurring cost for these.
Does Phallosan Forte increase girth?
The primary function is to increase length. Our testers saw a minor increase in girth (~0.2-0.25 inches), but this should be considered a secondary benefit, not a primary feature.
Is it painful to wear?
When applied correctly and with the proper tension, it is not painful. There is a sensation of stretching, but it should never be painful. Pain is a sign of improper application or excessive tension.
Final Verdict & Our Official Rating: 4.7/5
After an exhaustive 6-month review, our team’s conclusion is clear: Phallosan Forte is the gold standard for non-invasive, long-term penile traction therapy.
It is not a miracle device. It demands a significant investment of time, patience, and money. However, for the man who is truly committed, it delivers on its promise of safe, permanent, and clinically-validated results. Its superiority lies in a design that masterfully balances medical efficacy with the real-world requirement of long-term comfort and discretion. The ability to wear it for 8, 10, or even 12 hours a day without significant discomfort is what elevates it from a mere gadget to a legitimate therapeutic tool.
The learning curve and recurring costs are valid drawbacks, but they are far outweighed by its proven safety profile and the life-changing results it can offer for both cosmetic enhancement and the treatment of Peyronie’s disease.
For the serious user, Phallosan Forte is worth every penny.
Where to Buy Phallosan Forte Safely (And Avoid Counterfeits)
Given the medical nature and price of this device, the market is unfortunately plagued by cheap, ineffective, and potentially dangerous counterfeits, especially on platforms like eBay and Amazon. These fake devices are not made with medical-grade materials and lack the precise engineering of the original.
To ensure you receive an authentic, CE-certified product backed by the manufacturer’s warranty, we strongly recommend purchasing only from the official Phallosan Forte website. This is the only way to guarantee you are getting the safe, effective device that was tested in clinical trials and reviewed in this article.
(This ensures you receive the authentic product and are covered by the 2-year manufacturer warranty)
How we reviewed this article:
Our experts vigilantly monitor the domain of health and wellness, promptly refreshing our articles with the latest discoveries. Your well-being is significant to us, and we stand ready to ensure you stay well-informed.
September 10, 2022
September 10, 2022
September 14, 2023
Original Version
Written By Shahrokh Shariat, MD Edited By Suzanne Briggs Medically Reviewed By Thomas M. Buckley, MD Copy Edited By Daniel Johnson
September 14, 2023
November 2, 2025
Revised Version
Written By Shahrokh Shariat, MD Edited By Suzanne Briggs Medically Reviewed By Thomas M. Buckley, MD Copy Edited By Daniel Johnson
November 2, 2025
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