Hesperidin (Citrus Flavanone Glycoside · Venous Tonic · Capillary Support)
| CAS No. | 520-26-3 |
| Class | Polyphenol · Flavanone Glycoside · Flavonoid |
| Source | Citrus sinensis / Citrus aurantium peel — primary commercial source; also lemon, mandarin peel. A major byproduct of orange juice production. |
| Claim strength | Moderate–High |
| Buy from Herbuno | Hesperidin 90% Powder → · Neohesperidin 98% Powder (Bitter Orange) | High-Purity Isolate | Citrus aurantium → |
Historical framing: Hesperidin was one of Albert Szent-Györgyi's original "Vitamin P" compounds in the 1930s — identified for restoring capillary integrity in patients with haemorrhagic tendencies corrected by lemon juice. Though the Vitamin P classification was discontinued, the underlying capillary-protective biology is now clinically validated. Production scale: Commercial hesperidin is extracted from orange peel as a byproduct of the global orange juice industry, making it one of the most cost-effective flavonoids per milligram available for supplement formulation. Semi-synthetic role: Hesperidin serves as the industrial starting material for semi-synthetic production of diosmin (by oxidative conversion of the flavanone to a flavone), positioning it at the centre of the venous health bioflavonoid market. Clinical precedent: In combination with diosmin (Daflon: 90% diosmin, 10% hesperidin), hesperidin contributes to one of the most extensively validated natural phlebotonic products in clinical medicine.
Evidence for Venous Insufficiency, Capillary Fragility & Cardiovascular Support
Venous insufficiency — diosmin combination evidence: In combination with diosmin, hesperidin contributes to a comprehensively validated evidence base (13+ RCTs) for chronic venous disease. Its standalone contribution is documented in multiple trials for capillary permeability reduction and venous tone improvement. Claim strength: High (combination); Moderate (standalone).
Capillary fragility and bruising: Multiple European trials document hesperidin reducing capillary fragility, bruising tendency, and petechial haemorrhage. Mechanism: inhibition of hyaluronidase and stabilisation of capillary basement membranes. Claim strength: Moderate.
Cardiovascular and anti-inflammatory: Reduces LDL oxidation, improves arterial endothelial function, and reduces CRP. Human RCTs document improvements in blood pressure and endothelial function parameters. Claim strength: Moderate.
Metabolic support: Hesperetin (hesperidin aglycone) has documented insulin-sensitising and lipid-modulating properties in preclinical models. Limited human data. Claim strength: Emerging.
Hesperidin 90% Powder →
Neohesperidin 98% Powder (Bitter Orange) | High-Purity Isolate | Citrus aurantium →
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Dosage, Bioavailability & Formulator Specification
Clinical dose: 500–1,000 mg/day for venous applications. In Daflon combination, hesperidin provides 100 mg per 1,000 mg daily dose (10% fraction). Standalone dosing for capillary and cardiovascular applications: 500–600 mg/day.
Microbiome-dependent bioavailability: Hesperidin requires colonic microbiota to cleave the rutinoside sugar, producing significant inter-individual variability (average oral bioavailability 6–25%). For consistent plasma concentrations, hesperetin aglycone achieves faster and more predictable absorption.
Specification: Hesperidin 90–95% purity from citrus peel extraction is the standard supplement grade. Confirm HPLC purity on the CoA.
Synergistic pairs: Diosmin (the clinical combination; 9:1 diosmin:hesperidin = Daflon equivalent), rutin (capillary support stack), vitamin C (synergistic capillary and connective tissue support), escin/horse chestnut (venous tonic combination).
Frequently Asked Questions — Hesperidin
What is the relationship between hesperidin, hesperetin, and diosmin?
Hesperidin is the glycoside form (hesperetin-7-rutinoside) found in citrus peel. Hesperetin is the aglycone released after gut microbiota hydrolysis — the absorbed form. Diosmin is produced by semi-synthetic oxidation of hesperidin, converting the flavanone C-ring to a flavone structure. Hesperidin and diosmin are chemically related but pharmacologically distinct.
Why is hesperidin combined with diosmin rather than used alone?
The 9:1 diosmin:hesperidin combination was clinically optimised for the Daflon product. Diosmin provides primary phlebotonic activity (venous tone, lymphotonicity). Hesperidin contributes complementary capillary permeability reduction and anti-inflammatory activity in the venous wall. Using either alone achieves less robust results than the clinically validated combination.
Is hesperidin relevant for skin health formulations?
Yes — hesperidin has antioxidant, UV protection-enhancing, and collagen synthesis-supporting properties. Hesperetin inhibits melanin synthesis (via tyrosinase inhibition) and reduces UV-induced inflammation. Rational for beauty nutrition formulations targeting skin photoprotection and anti-ageing.
How does hesperidin differ from naringenin and other citrus flavanones?
All citrus flavanones share the saturated C-ring structure. Hesperidin (from sweet orange) has stronger venous tonic and capillary permeability activity and the strongest pharmaceutical evidence base. Naringenin (from grapefruit) has stronger SGLT and CYP3A4 inhibitory activity relevant to metabolic health and drug interactions. They cover complementary aspects of citrus bioflavonoid biology.
Claim-strength scale – High = multiple human RCTs; Moderate = limited trials or strong preclinical convergence; Emerging = early-stage lab or animal data.
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