Does diosmin work for hemorrhoids?
Medically reviewed by Dr. Robert William, MD · Written by Kevin Schwaner · Updated July 2026
Quick Answer
Yes. Diosmin is a citrus flavonoid and the most clinically studied ingredient for hemorrhoids; a Cochrane review of phlebotonics found this flavonoid class reduces symptoms including bleeding, itching, and discharge. It is taken daily and works over days to weeks by supporting vein tone rather than numbing pain. HemRid Ultra delivers 600mg of diosmin per serving in an enhanced-bioavailability form.
Diosmin is the active behind the flavonoid preparations used for venous symptoms worldwide, and it is frequently paired with hesperidin. Its mechanism is vascular: it improves venous tone, reduces capillary permeability, and supports lymphatic drainage, which together address the swelling, bleeding, and discomfort of hemorrhoids from the inside. This is why clinical trials measure diosmin over days to weeks rather than minutes.
Because diosmin does not numb or shrink tissue on contact, it is not a fire extinguisher for an acute flare. Use it as the daily internal layer and pair it with a topical anesthetic for immediate pain. Dose matters: research uses specific daily amounts, so a concentrated, disclosed dose such as the 600mg in HemRid Ultra is preferable to a flavonoid buried in a proprietary blend.
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Sources
- Cochrane Database of Systematic Reviews: Phlebotonics for haemorrhoids
- NIH / NIDDK: Hemorrhoids
- Angiology: micronized flavonoid RCTs in hemorrhoids
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Is HemRid Max or HemRid Ultra better? →What is the best hemorrhoid supplement? →Do hemorrhoid supplements actually work? →*Informational only, not a substitute for professional medical advice. Any rectal bleeding should be evaluated by a doctor. These statements have not been evaluated by the FDA.