Escin

PhytochemicalSaponinBest with a meal

What is it

Escin (or aescin) is the principal saponin mixture from horse chestnut seed (Aesculus hippocastanum), the active responsible for the herb's effects on chronic venous insufficiency.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Chronic venous insufficiency

Strong Evidence

Multiple RCTs and Cochrane meta-analyses support escin/standardized horse chestnut extract for relief of chronic venous insufficiency symptoms.

How it works

Escin increases venous tone, reduces capillary permeability, and decreases leukocyte adhesion in inflamed venous walls. These actions reduce leg swelling, heaviness, and ankle edema. Standardized horse chestnut extracts list escin content for dosing consistency.

Dosage

Typically delivered through horse chestnut seed extract: 300 mg twice daily (providing 50-100 mg escin per day).

When and how to take it

Taken with meals, twice daily. Effects develop over weeks.

1 commercial form

Compare the main delivery options and what they’re best suited for.

Horse chestnut seed extract standardized to escin

Most studied commercial form.

Well absorbed; standardization is key.

Safety

Generally well tolerated in trials. GI upset, dizziness, headache, itching reported. Raw horse chestnut seed is toxic.

Who should be cautious

Avoid in pregnancy and breastfeeding. Caution with kidney disease (high-dose case reports of renal effects) and anticoagulants.

Interactions

Possible additive effects with anticoagulants/antiplatelets. May modestly lower blood glucose. Theoretical interaction with lithium.

Food sources

Raw horse chestnut seeds (toxic; do not eat)

Amount
n/a
%DV
—

Frequently asked questions

Is escin a drug or supplement?⌄

In Europe, escin/horse chestnut extract is sometimes regulated as a botanical drug. In the U.S., it is sold as a dietary supplement.

Can I use escin for varicose vein appearance?⌄

Trials primarily show symptom relief (heaviness, swelling) rather than reversing varicose vein appearance.

References

Escin on Wikidata — Wikidata link

Escin on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Escin (PubMed search) — PubMed link

Track Escin with Pilora

Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.