Varithena
A manufactured foam Polidocanol mixed into a fine, even foam in a canister. The bubbles push blood out of the way so the drug touches the vein wall directly.
Varithena is a ready-made foam for large varicose veins, including the trunk vein under the skin. It is injected with ultrasound guiding it, usually in one visit. Plain sclerotherapy is better for spider veins and small surface veins. It is a course of injections spaced weeks apart. Both use the same kind of drug, so the real question is vein size, not brand.
| The difference | Varithena | Sclerotherapy |
|---|---|---|
| What it is | A manufactured foam | A liquid, or a hand-mixed foam |
| What it feels like | Pressure, then an aching leg | Stinging, then a brief cramp |
| Downtime | Walk out, easy for a day or two | None, and walking is encouraged |
| Cost and insurance | One larger fee, often covered | Priced per session, and it is a course |
A manufactured foam Polidocanol mixed into a fine, even foam in a canister. The bubbles push blood out of the way so the drug touches the vein wall directly.

Side by side
Varithena
A manufactured foam
Polidocanol mixed into a fine, even foam in a canister. The bubbles push blood out of the way so the drug touches the vein wall directly.
Sclerotherapy
A liquid, or a hand-mixed foam
The same family of drug in liquid form. For medium veins many doctors whip their own foam at the bedside with a syringe.
Varithena
Large veins, including the trunk vein
Twisted trunk veins and big branches, usually found on ultrasound rather than by eye.
Sclerotherapy
Spider veins and small varicose veins
The fine red and purple lines, and small ropey veins you can see near the surface.
Varithena
Needle or catheter, plus ultrasound
The leg is scanned while the foam is injected, so the doctor can watch it fill the vein and spasm it shut. No heat, and no numbing fluid along the vein.
Sclerotherapy
Freehand injections into what you see
Several small injections per visit, sometimes with a light or vein finder to spot feeding veins.
Varithena
Pressure, then an aching leg
The injection itself is quick. Legs often feel tight or achy for a few days afterwards.
Sclerotherapy
Stinging, then a brief cramp
Each injection stings for a second. Some solutions cause a short cramping ache.
Varithena
Often one, sometimes two
A follow-up scan checks the vein stayed closed. Surface veins are usually mopped up separately.
Sclerotherapy
Usually two to four
Spaced a few weeks apart. Large clusters take more.
Varithena
Walk out, easy for a day or two
Compression stockings for about a week. Walking daily is part of the instructions.
Sclerotherapy
None, and walking is encouraged
Stockings for a week or two. Skip the gym and long standing for a day.
Varithena
Aching, lumps and staining along the vein
A treated trunk vein can feel firm and sore for a few weeks. The rare serious problem is a clot spreading into a deep vein, which is why walking matters.
Sclerotherapy
Brown staining and new tiny veins
A brown line along the treated vein can last months. A blush of new tiny vessels can appear nearby. Both usually fade.
Varithena
One larger fee, often covered
Treating varicose veins that ache, swell or bleed is often covered by insurance.
Sclerotherapy
Priced per session, and it is a course
Varithena
There is no home version
Nothing sold to the public produces a controlled foam or puts it into a vein under ultrasound.
Sclerotherapy
Stockings and vein creams
Compression stockings ease aching and swelling but remove nothing. Creams cannot reach a vein. Handheld "vein removal" pens act only on the skin surface and can leave marks.
Varithena
Sclerotherapy
Common questions