Polidocanol

Discover Polidocanol, a sclerosing agent used for varicose veins, spider veins, and hemorrhoids. Learn about its mechanism, dosage, and potential side effe

Polidocanol Polidocanol uses Polidocanol for varicose veins Lauromacrogol 400 Sclerotherapy agent Spider vein treatment Polidocanol Polidocanol side effects Polidocanol dosage How Polidocanol works
🏷 ATC Code: C05BB02 📂 Sclerosing agents for local injection 🕐 Updated: Mar 10, 2026 ✓ Medical Reference

Looking to order Polidocanol?

Browse our catalog for available pharmaceutical products and competitive pricing.

What is Polidocanol?

Polidocanol, also known by its chemical name Lauromacrogol 400, is a pharmaceutical ingredient primarily recognized for its dual action as a sclerosing agent and a local anesthetic. It is widely used in medical procedures to treat various vascular conditions, most notably varicose veins and spider veins. When injected into a blood vessel, Polidocanol irritates the lining of the vessel, causing it to swell, stick together, and eventually close off. This process is known as sclerotherapy, a minimally invasive procedure that helps to improve both the aesthetic appearance and the symptoms associated with problematic veins. Its additional local anesthetic properties help to minimize discomfort during the injection process, making the treatment more tolerable for patients.

How Does it Work?

The mechanism of action of Polidocanol is two-fold. Firstly, as a sclerosing agent, it acts on the endothelial cells that line the inner surface of blood vessels. Upon contact, Polidocanol causes chemical damage to these cells, leading to their denaturation and desquamation. This damage triggers an inflammatory response within the vessel wall, which in turn leads to fibrosis and eventual obliteration of the vessel lumen. The treated vein then gradually shrinks and is absorbed by the body over time, redirecting blood flow to healthier veins. Secondly, Polidocanol possesses a mild local anesthetic effect. It stabilizes the cell membranes of nerve endings, reducing their excitability and thereby providing pain relief at the site of injection. This anesthetic property is particularly beneficial during sclerotherapy, as it helps to alleviate the immediate discomfort that might otherwise be experienced by the patient.

Medical Uses

Polidocanol is a versatile compound with several important medical applications, predominantly in the field of phlebology (the study of veins). Its primary use is in the treatment of various forms of venous insufficiency, including:

  • Varicose Veins (Sclerotherapy)

    Polidocanol is highly effective for treating both small and medium-sized varicose veins. It can be injected as a liquid or, more commonly, as a foam (Polidocanol foam), which allows for better contact with the vessel walls and is particularly useful for larger veins. This treatment helps to alleviate symptoms such as pain, swelling, heaviness, and cramping.

  • Spider Veins (Telangiectasias)

    For smaller, superficial veins known as spider veins, Polidocanol provides an excellent cosmetic solution. The injections cause these fine veins to fade and disappear, significantly improving the skin's appearance.

  • Reticular Veins

    These are slightly larger, often bluish veins that lie beneath the skin surface, acting as feeder veins for spider veins. Polidocanol is also effective in treating these.

  • Hemorrhoids

    In some cases, Polidocanol can be used in the sclerotherapy of internal hemorrhoids. The injection helps to shrink the hemorrhoidal tissue and reduce bleeding and discomfort.

  • Other Uses

    Beyond venous conditions, Polidocanol has been investigated and used in other areas, such as the treatment of joint cysts and certain lymphatic malformations, due to its sclerosing properties.

Dosage

The dosage of Polidocanol is highly individualized and depends on several factors, including the size and number of veins being treated, the patient's overall health, and the specific formulation (liquid or foam). It is always administered by a qualified healthcare professional, typically a dermatologist, phlebologist, or vascular surgeon. Polidocanol is available in various concentrations, such as 0.5%, 1%, 2%, and 3%, to suit different vein sizes. The total volume injected per session is carefully monitored to stay within safe limits, preventing systemic side effects. Multiple treatment sessions may be required to achieve optimal results, with intervals between sessions allowing for healing and assessment of the initial response. Patients should never attempt to self-administer Polidocanol.

Side Effects

While generally well-tolerated, Polidocanol can cause side effects, most of which are mild and temporary. Common side effects include:

  • Local pain or discomfort at the injection site.
  • Bruising or swelling around the treated area.
  • Temporary skin discoloration (hyperpigmentation), which usually fades over weeks or months.
  • Allergic skin reactions, such as hives or itching.
  • Headache or dizziness (less common).

More serious, though rare, side effects can include:

  • Allergic reactions (anaphylaxis) in highly sensitive individuals.
  • Skin necrosis (tissue damage) if the solution leaks outside the vein.
  • Superficial thrombophlebitis (inflammation of a superficial vein).
  • Deep vein thrombosis (DVT) or pulmonary embolism (PE), although these are extremely rare when the procedure is performed correctly and post-procedure instructions (like walking and compression) are followed.

Patients should always discuss potential risks and side effects with their healthcare provider before treatment.

Drug Interactions

Due to its local administration and rapid metabolism, systemic drug interactions with Polidocanol are generally considered rare and clinically insignificant. However, it is crucial to inform your doctor about all medications you are currently taking, including prescription drugs, over-the-counter medicines, herbal supplements, and vitamins. This information helps your healthcare provider assess any potential risks, especially if you are on medications that affect blood clotting (e.g., anticoagulants or antiplatelet drugs), as these could theoretically increase the risk of bruising or bleeding at the injection site. While direct interactions are uncommon, a comprehensive medical history ensures the safest possible treatment outcome.

FAQ

Is Polidocanol treatment painful?

Most patients experience only mild discomfort during Polidocanol injections. The ingredient itself has local anesthetic properties, which helps to numb the area. A slight burning or stinging sensation may be felt briefly, but it is usually well-tolerated.

How long does it take for Polidocanol to work?

The treated veins typically begin to close immediately after injection. However, visible improvement, such as the fading of varicose veins or spider veins, usually takes several weeks to a few months as the body gradually absorbs the treated vessel.

Is Polidocanol safe for everyone?

While generally safe, Polidocanol is not suitable for everyone. Contraindications include pregnancy, breastfeeding, acute thrombophlebitis, severe arterial disease, and known allergies to Polidocanol. A thorough medical evaluation by a healthcare professional is essential to determine suitability.

Can Polidocanol be used for cosmetic purposes?

Yes, Polidocanol is frequently used for cosmetic purposes, particularly for treating unsightly spider veins and small reticular veins on the legs and other body parts, significantly improving skin appearance.

What should I do after a Polidocanol treatment?

After treatment, it's often recommended to wear compression stockings for a specified period, walk regularly to promote blood circulation, and avoid strenuous exercise, hot baths, saunas, and direct sun exposure on the treated area for a few days or weeks.

Products containing Polidocanol are available through trusted online pharmacies. You can browse Polidocanol-based medications at ShipperVIP or Medicenter.

Summary

Polidocanol is a highly effective and widely used sclerosing agent and local anesthetic. It plays a crucial role in the treatment of various venous conditions, including varicose veins and spider veins, through a process known as sclerotherapy. Its dual action helps to obliterate problematic veins while minimizing patient discomfort. Administered by healthcare professionals, Polidocanol offers a minimally invasive solution for both the medical symptoms and cosmetic concerns associated with venous insufficiency, significantly improving patients' quality of life.