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Polidocanol skeletal.svg
Clinical data


  • Polydocanol
  • Laureth 9
  • Macrogol lauryl ether
  • Lauromacrogol
  • PEG-9 lauryl alcohol
  • POE-9 lauryl alcohol
  • Dodecylpolyethyleneglycolether
  • Hydroxyl polyethoxy dodecane
  • Oxypolyethoxydodecane
AHFS/Drugs.com International Drug Names
  • Topical: allowed
    Injection: contraindication in months 1–3 and after week 36
Routes of
topical, subcutaneous injection
ATC code
Legal status
Legal status
  • OTC (topical), (injection)
CAS Number
PubChem CID
ECHA InfoCard 100.105.513 Edit this at Wikidata
Chemical and physical data
Formula C30H62O10
Molar mass 582.8073 g/mol (predicted)
3D model (JSmol)
 NYesY (what is this?)  (verify)

Polidocanol is a local anaesthetic and antipruritic component of ointments and bath additives. It relieves itching caused by eczema and dry skin.[1] It is formed by the ethoxylation of dodecanol.


Polidocanol is also used as a sclerosant, an irritant injected to treat varicose veins, under the trade names Asclera, Aethoxysklerol[2] and Varithena.[3] Polidocanol causes fibrosis inside varicose veins, occluding the lumen of the vessel, and reducing the appearance of the varicosity.

The FDA has approved polidocanol injections for the treatment of small varicose (less than 1 mm in diameter) and reticular veins (1 to 3 mm in diameter). Polidocanol works by damaging the cell lining of blood vessels, causing them to close and eventually be replaced by other types of tissue.[4][5]

Pure polidocanol for pharmaceutical use


  1. ^ "E45 itch relief cream". netdoctor.co.uk. Retrieved 2007-07-12. 
  2. ^ Sclerotherapy, Laurence Z Rosenberg, MD, eMedicine.com
  3. ^ "Varithena™ (polidocanol injectable foam) For Intravenous Use. Full Prescribing Information" (PDF). Biocompatibles, Inc. Retrieved 1 October 2015. 
  4. ^ Facts and Companies: Varicose Vein Treatment Approved
  5. ^ "Asclera Full Prescribing Information in Drug Reference Encyclopedia". Retrieved 2010-04-11.