If you’ve been searching for how to increase penis size, you’ve likely encountered a vast amount of conflicting information online — from supplements and exercises to devices and surgeries. The reality is that the vast majority of these methods lack credible clinical evidence.
This guide explains what the medical evidence actually shows, and introduces penile fillers — currently the most established minimally invasive medical treatment for men seeking genuine, measurable penis girth enhancement.
Can You Actually Make Your Penis Bigger? What the Evidence Shows
This is one of the most searched questions in men’s health — and one of the most frequently misled. Let’s be direct:
- Pills, supplements, and herbal remedies have no credible clinical evidence supporting penis enlargement.
- Jelqing and traction devices may produce modest, temporary changes to flaccid length in some studies, but evidence for permanent or meaningful girth change is lacking.
- Surgery (such as suspensory ligament release) can increase flaccid length but is invasive, carries significant risks, and is generally reserved for specific clinical indications.
- Penile fillers represent the most evidence-supported, minimally invasive route to measurable girth enhancement, with results visible immediately and patient satisfaction rates consistently reported above 75–80% in clinical studies.¹
Clinical note: At London Andrology, we always conduct a thorough assessment before recommending any treatment. The goal is to support your sexual health and confidence — not to reinforce unrealistic standards. If you have concerns about penile size, a consultation with one of our andrologists is the right first step.
What Are Penile Fillers?
Penile fillers are injectable substances placed into the subcutaneous tissue of the penile shaft — specifically in the plane between the Dartos fascia and Buck’s fascia — to increase girth circumference. This is a well-defined anatomical target used in clinical practice.
The most commonly used filler is hyaluronic acid (HA), a naturally occurring substance already found throughout the human body. It is the preferred choice for penile augmentation because:
- It is biocompatible and well tolerated
- Results are reversible — the filler can be dissolved with hyaluronidase if needed
- It carries a lower complication profile compared to permanent materials
- It has been studied in peer-reviewed andrology research
Other materials used include calcium hydroxylapatite (CaHA) and polycaprolactone (PCL), both of which stimulate collagen production and offer longer-lasting results. Permanent fillers such as silicone are not used at London Andrology due to the well-documented risk of serious long-term complications including chronic inflammation and granuloma formation.¹
Who Is a Good Candidate?
Penile filler treatment may be suitable for men who:
- Have concerns about penile girth despite normal anatomy
- Experience reduced sexual confidence related to perceived size
- Have contour irregularities from previous surgery, Peyronie’s disease treatment, or congenital asymmetry
- Have realistic expectations and understand this is a girth procedure, not a length procedure
- Have been assessed by an andrologist and do not have underlying psychological conditions such as body dysmorphic disorder (BDD) that may warrant psychological support first
Patient selection and thorough pre-procedure counselling are among the most important parts of the process. Our clinicians take this seriously.
The Penile Filler Procedure: Step by Step
The procedure is performed in our clinic on an outpatient basis and typically takes 30–60 minutes.
- Consultation and assessment Your anatomy, medical history, and expectations are assessed in full. We explain the procedure, realistic outcomes, and alternatives.
- Topical or local anaesthesia A topical numbing cream is applied first, followed by local anaesthetic if required, to ensure comfort throughout.
- Cannula-based injection We use blunt cannulas rather than sharp needles wherever possible. This reduces the risk of vascular injury and bruising. The filler is deposited in precise, controlled amounts along the shaft.
- Manual moulding The clinician carefully moulds the filler to ensure even distribution and a natural result.
- Post-procedure review You are reviewed before leaving and given aftercare instructions.
Results: How Much Bigger Can Penile Fillers Make You?
Penile fillers primarily increase girth (circumference) — they do not increase erect length.
Typical results reported in clinical studies include:
- An increase of 1.5–3.0 cm in shaft circumference
- Results are visible immediately, with final outcomes stabilising once post-procedure swelling settles (usually within 1–2 weeks)
How long do results last?
| Filler Type | Duration |
| Hyaluronic acid (HA) | 12–24 months |
| Collagen-stimulating fillers (PCL/CaHA) | 2–4 years |
What About “Penismaxxing” and “Dickmaxxing”?
These terms have become popular in online communities to describe efforts to maximise penile size through various methods. While some techniques discussed within these communities are harmless (such as maintaining a healthy body weight, which reduces the pubic fat pad and can make the penis appear larger), others — including aggressive traction, unregulated supplements, or self-injection — carry genuine risk of permanent injury.
If you are considering penile enhancement, the medically sound path is a consultation with a qualified andrologist who can assess your anatomy, discuss clinically validated options, and ensure your health and safety throughout.
Risks and Potential Complications
Penile fillers are considered safe when performed by experienced clinicians using appropriate techniques and materials — but no medical procedure is without risk. Potential complications include:
- Temporary swelling and bruising
- Palpable nodules or lumpiness
- Asymmetry or uneven distribution
- Infection (rare)
- Filler migration (rare)
- Vascular compromise (very rare but serious — a key reason why only trained clinicians should perform this procedure)
The use of permanent fillers is associated with higher rates of severe long-term complications and is not endorsed by our clinic or current professional guidelines.¹
Frequently Asked Questions
Can penis size actually be increased medically?
Yes — penile girth can be increased using injectable hyaluronic acid fillers, which is the most evidence-supported minimally invasive method currently available. Permanent, clinically meaningful increases in erect length are significantly harder to achieve and are not a realistic outcome of filler treatment.
How long does a penile filler procedure take?
The procedure typically takes 30–60 minutes in clinic. Most patients are able to return to normal (non-sexual) activity the same day.
Is the procedure painful?
Topical anaesthetic cream and/or local anaesthetic is used. Most patients report only mild discomfort during the procedure.
How long do penile fillers last?
Hyaluronic acid fillers typically last 12–24 months. Collagen-stimulating fillers can last 2–4 years. Results vary by individual.
Can penile fillers be reversed?
Yes — hyaluronic acid fillers can be dissolved using an enzyme called hyaluronidase, making them fully reversible. This is one of the main reasons HA is the preferred material.
What is the difference between penile fillers and penile surgery?
Penile fillers are a minimally invasive, non-surgical outpatient procedure with no general anaesthetic, minimal downtime, and reversible results. Surgery (such as fat grafting or implant-based procedures) is more invasive, carries higher risks, and requires longer recovery. Fillers are the appropriate first-line option for most men seeking girth enhancement.
Who should not have penile fillers?
Men with active infection in the treatment area, severe coagulation disorders, unrealistic expectations, or concerns consistent with body dysmorphic disorder should not proceed with treatment without appropriate clinical assessment and, where relevant, psychological support first.
Why Choose London Andrology?
London Andrology is a specialist men’s health clinic with dedicated expertise in andrology, sexual medicine, and male genital aesthetics. Our clinicians have the anatomical training and clinical experience to perform these procedures safely and to counsel patients honestly — including telling you when a procedure is not right for you.
We are committed to evidence-based practice, patient safety, and realistic, clinically accurate expectations.
Summary
If you have been searching for how to increase penis size, the most honest medical answer is this: penile girth can be safely and effectively increased using hyaluronic acid fillers, with measurable results, minimal downtime, and reversible outcomes. It is not a miracle cure, but it is a clinically sound option for appropriately selected patients.
To find out whether you are a suitable candidate, book a consultation with one of our specialist andrologists.
References
- Sokolakis I, Hatzichristodoulou G. Clinical studies on the use of dermal fillers for penile augmentation: a systematic review. Andrology. 2020;8(3):624–635. doi:10.1111/andr.12742
- Shaeer O, Shaeer K, AbdelRahman IFS. Minimally invasive penile girth enhancement using hyaluronic acid filler: a systematic review. J Sex Med. 2021;18(2):299–309.
- Wylie KR, Eardley I. Penile size and the ‘small penis syndrome’. BJU Int. 2007;99(6):1449–1455.
This article is intended for educational purposes and does not constitute personal medical advice. All treatment decisions should be made in consultation with a qualified medical professional.
