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Supplements for Varicose Veins: Diosmin, Horse Chestnut, and What a Vein Doctor Can Do

Supplements for varicose veins can ease aching, heaviness and ankle swelling a little, but none has been shown to shrink the veins. Diosmin with hesperidin (micronized purified flavonoid fraction) and horse chestnut seed extract have the best trials (grade B). Only processed horse chestnut extract is safe to swallow: the raw seeds and bark are poisonous. A hot, swollen, painful calf needs urgent care, and a vein specialist can close faulty veins.

Published How we grade evidenceEditorial policy

The short version

  • Diosmin with hesperidin (micronized purified flavonoid fraction): less aching, heaviness and feeling of swelling than placebo. Grade B (Kakkos 2018).
  • Vein-toning pills as a group (phlebotonics): slightly less ankle swelling, but no clear change in quality of life. Grade B (Martinez-Zapata 2020).
  • Horse chestnut seed extract: less leg pain and leg volume over a few months. Grade B (Pittler 2012).
  • Semisynthetic rutosides and red vine leaf extract: modest relief of symptoms or leg swelling. Grade B (Aziz 2015; Rabe 2011).
  • Grape seed, pine bark, butcher's broom, gotu kola: few or small trials. Grade C (Robertson 2020; Chong 2013).
  • Supplements for spider veins: no randomized trial found; injections are the tested treatment. Grade D (Bogachev 2018; Nakano 2021).

Varicose veins are swollen, twisted veins, mostly in the legs. Valves that should keep blood moving up to the heart leak, so blood pools. They cause a heavy, aching, itchy or burning feeling that worsens with long standing, and they are more common with age, family history, pregnancy and extra weight (Raetz 2019). Chronic venous insufficiency (CVI) is the wider problem of poorly draining leg veins, with swelling and, later, skin changes; most supplement trials enrolled people with CVI.

No pill has been shown to make varicose veins shrink or disappear. The trials measured symptoms, ankle size and leg volume. A 2026 review put weight control and compression at the core of self-care, with flavonoid pills as add-ons for symptoms (Fogacci 2026).

Do diosmin and hesperidin help varicose veins?

Grade B for symptoms. Diosmin and hesperidin are plant flavonoids. The best-studied form, micronized purified flavonoid fraction (MPFF), is a pill of 90% finely ground diosmin and 10% other flavonoids counted as hesperidin; the dose studied was 500 mg twice a day (Lyseng-Williamson 2003). A 2018 meta-analysis of placebo-controlled MPFF trials found less leg heaviness, pain, cramps and feeling of swelling; for heaviness, treating 2 people helped one more than placebo did (Kakkos 2018).

Grade B for swelling, from the Cochrane review of all vein-toning pills (phlebotonics). Swelling of the lower legs was probably a little less common than on placebo (relative risk 0.70, 13 trials, 1,245 people), and ankles were about 4 mm slimmer. Quality of life showed little or no difference (5 trials, 1,639 people), and leg ulcers healed no faster (Martinez-Zapata 2020). Only 11 of the review's 56 trials with usable data tested diosmin or a close relative, so our database's A for diosmin and swelling borrows the whole group's result; we grade it B.

Does horse chestnut seed extract help?

Grade B. Horse chestnut seed extract contains a compound called aescin. In the Cochrane review, 6 of 7 placebo-controlled trials found less leg pain, and leg volume was 32.1 mL lower than on placebo in 6 trials (502 people). Side effects were mild and uncommon, but the reviewers listed several caveats and asked for larger trials (Pittler 2012). Our database grades it A; those caveats are why we grade it B.

In a 12-week trial of 240 people with CVI, leg volume fell 43.8 mL on the extract and 46.7 mL with compression stockings, and rose 9.8 mL on placebo (Diehm 1996). Processed extracts have been used safely in studies for up to 12 weeks (NCCIH).

Do rutin or rutosides help?

Grade B for semisynthetic rutosides. Rutin is a flavonoid found in apples, citrus fruits and cranberries. The trials tested hydroxyethylrutosides (oxerutins), lab-modified versions sold as standardized products. A 2015 review found 15 trials (1,643 people); pooling the similar placebo-controlled ones, pain, heavy legs and cramps eased more than on placebo, but every trial was of limited quality (Aziz 2015).

We found no trial of plain rutin, the form sold as a supplement, for varicose or spider veins. Our rutin page grades it C for leg symptoms from those rutoside reviews; the evidence is for a different form.

Does red vine leaf extract help?

Grade B. In 248 people with CVI, 720 mg a day of red vine leaf extract for 12 weeks cut leg volume by 19.9 mL more than placebo and eased leg pain, while other symptoms didn't change; side effects matched placebo (Rabe 2011). An earlier 12-week trial in 260 people found lower-leg volume fell on 360 or 720 mg a day and rose on placebo (Kiesewetter 2000). A review of 5 trials found benefits in only some of them (Azhdari 2020).

Do grape seed, pine bark, butcher's broom or gotu kola help?

Grade C. Grape seed extract, 150 mg twice a day for 12 weeks, shortened backflow in leg veins and improved symptom scores in 176 adults with varicose veins, but the control group got no placebo and everyone knew which group they were in (Bae 2026). In 303 patients, it met a trial's preset noninferiority margin against MPFF for quality of life over 8 weeks, which doesn't show the two work equally well (Kim 2024).

For pine bark extract, the Cochrane review found only 2 small CVI trials (60 people) and called the evidence very low certainty (Robertson 2020). Our vein insufficiency page grades it B on one open trial; we grade it C.

Butcher's broom root extract reduced leg volume by about 20 mL against placebo over 12 weeks in 166 women (Vanscheidt 2002). A combination of butcher's broom, hesperidin methyl chalcone and vitamin C eased pain, cramps and heaviness in pooled trials of mixed quality (Boyle 2003). For gotu kola, 8 trials suggested less ankle swelling, but most were poorly reported (Chong 2013).

Do supplements help spider veins?

Grade D. Spider veins (telangiectasias) are tiny red or purple veins near the skin's surface. In a Cochrane review, injections of a vein-closing liquid (sclerotherapy) cleared them better than placebo (4 trials, 613 treated), with more skin darkening and new tiny veins as side effects, and laser showed no clear difference from injections (Nakano 2021). That review covered procedures only. We found no randomized trial of a pill for spider veins; the only MPFF study was an observational, manufacturer-funded program around sclerotherapy (Bogachev 2018).

Do compression stockings, walking and raising your legs help?

Grade C for stockings. In 13 trials (1,021 people) with varicose veins, symptoms seemed to improve, but the certainty was low or very low, and many people gave up the stockings because of itching or discomfort (Knight 2021). The UK's NICE guideline advises against stockings as the treatment unless a procedure isn't suitable (NICE CG168).

Grade C for exercise. A Cochrane review found only 5 small trials (146 people) and couldn't judge the benefits (Araujo 2023). Doctors still advise activity, weight loss and avoiding long standing (Raetz 2019).

Grade D for raising your legs. In 15 people with skin damage from CVI, lifting the foot 30 cm above the heart sped skin blood flow by a median 45% (Abu-Own 1994).

What can a vein doctor do?

The usual first step is an ultrasound scan. NICE advises heat sealing of the faulty vein from inside (endothermal ablation, by laser or radio waves) first, foam injections if that isn't suitable, and surgery last (NICE CG168). Ablation has largely replaced stripping surgery and can be done under local anesthetic (Raetz 2019).

Grade B. For the main leg vein, a Cochrane review judged laser and radio-wave ablation comparable in closing the vein for up to 5 years (5 trials, 780 people), and recurrence after laser comparable to surgery (7 trials, moderate certainty) (Whing 2021). Foam injections improved appearance and symptoms against placebo, though deep clots may be slightly more common, on very low to low certainty evidence (de Ávila Oliveira 2021).

What we'd skip

  • Raw horse chestnuts, bark, flowers or leaves. They contain a toxic compound; only processed seed extract was tested (NCCIH). In a French poison-centre study, horse chestnut accounted for 2.5% of 2,197 cases of people eating a poisonous plant by mistake (Torrents 2024).
  • Plain rutin for spider veins. We found no trial; the rutoside evidence is for a lab-modified form (Aziz 2015).
  • Pills in place of a vein assessment. The pill trials measured symptoms and swelling, not whether faulty veins closed (Martinez-Zapata 2020); ablation closes them (Whing 2021).

Safety and interactions

  • Vein-toning pills: side effects, mainly digestive, ran a little higher than on placebo, and trials lasted too briefly to show long-term safety (Martinez-Zapata 2020).
  • Diosmin and medicines: in 12 healthy men, taking diosmin daily for 10 days pushed up blood levels of the seizure drug carbamazepine (Bedada 2017a) and the allergy drug fexofenadine, whose peak rose 49.2% (Bedada 2017b).
  • Horse chestnut extract: dizziness, stomach upset, headache and itching are possible (NCCIH). A woman taking it over the counter had a life-threatening bleed from a kidney growth; her doctors cautioned against combining it with blood thinners (a case report) (Snow 2012).
  • Liver and kidneys: one case report describes liver injury after an injected horse chestnut extract (Takegoshi 1986), and older reports describe kidney failure after aescin treatment in injured patients, route not stated (Voigt 1978; Klose 1976). With liver or kidney disease, ask a doctor first.
  • Red vine leaf and butcher's broom: side effects were about the same as placebo in their trials (Rabe 2011; Vanscheidt 2002). For pine bark, the evidence was too thin to judge safety (Robertson 2020).
  • Stockings: itching, irritation and dryness were the usual complaints (Knight 2021).
  • No interaction studies were found for red vine leaf, grape seed, butcher's broom or gotu kola. If you take a blood thinner, seizure medicine or any regular prescription, ask a pharmacist before adding a vein supplement.

When to see a doctor

  • Right away: one leg suddenly swells, throbs, or turns red or darker, usually in the calf or thigh. This can be a deep vein thrombosis (DVT), a clot in a deep vein (NHS; NHLBI). Call emergency services if you are also short of breath or have chest pain.
  • Right away: a varicose vein that bleeds. Get help at once; NICE says to refer immediately (NICE CG168).
  • Soon: a hard, red, tender vein. This is superficial vein thrombosis, a clot near the surface, and about 25% of people with one in the leg also have a DVT (Piazza 2025).
  • Soon: skin that darkens or turns scaly near the ankle, or any break in the skin of the lower leg still open after 2 weeks (NICE CG168).
  • When convenient: veins that ache, swell or itch enough to bother you. A vascular service can scan them and discuss treatment.

Don't stop a prescribed medicine on your own; ask the prescriber or pharmacist. If you are pregnant or breastfeeding, ask your doctor or midwife before taking any of these. If you are under 18, ask a clinician.

FAQ

What is the best supplement for varicose veins? Diosmin with hesperidin and horse chestnut seed extract have the strongest trials (grade B). They ease aching and swelling a little; they don't remove the veins.

Can supplements get rid of spider veins? We found no randomized trial showing that any pill clears spider veins. Injections (sclerotherapy) and laser are the treatments tested in trials.

Is horse chestnut safe? Processed seed extract was well tolerated for up to about 3 months in trials. Raw seeds, bark, flowers and leaves are poisonous, and the extract may add to bleeding risk with blood thinners.

Does rutin help varicose veins? Lab-modified rutosides eased symptoms in limited-quality trials (grade B). We found no trial of plain rutin, the form usually sold.

Do compression stockings work for varicose veins? They may ease symptoms, but the trials are small and low certainty (grade C). NICE recommends a procedure first and stockings only when a procedure isn't suitable.

Sources

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