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Moderate evidenceImmunity

Papaya Leaf Extract

Papaya leaf extract raises platelet counts in dengue fever faster than placebo across several randomized trials. Whether that translates into fewer bleeding events or shorter hospital stays remains unproven.

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What the science says

  • Platelet recovery in dengue Moderate evidence

    A systematic review and meta-analysis of randomized trials found faster platelet count recovery with Carica papaya leaf extract in dengue. Most included trials were small and conducted in a single region, with notable risk of bias.

  • Clinical outcomes in dengue Limited evidence

    A multi-centre double-blind placebo-controlled trial confirmed the platelet effect but was not powered for bleeding, hospital stay or mortality. No trial has yet shown a change in hard clinical outcomes.

  • Thrombocytopenia from other causes Limited evidence

    A systematic review and meta-analysis of chemotherapy-induced thrombocytopenia found only a small, low-quality body of evidence. The dengue findings should not be assumed to carry over.

Dosage & safety

Studied doseTrials used standardized leaf extract capsules, commonly around 1100 mg/day, or 25 mL of leaf juice twice daily, for about 5 days.
SafetyShort-term use in trials was well tolerated, with occasional nausea and a bitter taste. It is not a substitute for medical care in dengue, which requires monitoring; avoid in pregnancy (animal data suggest uterine effects) and alongside anticoagulants.

How to take it

TimingDivided doses through the day, for about five days — the trials ran short courses during acute illness.
With food?With food, since the extract is bitter and nausea is the usual complaint.
Worth knowingIn dengue this does not replace monitoring: platelet counts and warning signs still need medical review, whatever the leaf extract does to the numbers.

Interactions

With medications

  • warfarin, aspirin and other anticoagulant or antiplatelet drugs

    Papaya leaf is used precisely for its effects on platelets, so combining it with drugs that impair clotting is a poorly characterised bleeding risk. do not combine without medical supervision

Well-established interactions only — this is not a complete list. Always tell your doctor and pharmacist what you take.

Frequently asked questions

Does papaya leaf extract raise platelets in dengue?

Yes, with moderate evidence: a meta-analysis of randomized trials found faster platelet count recovery with papaya leaf extract in dengue. Most trials were small and from a single region, and none has shown fewer bleeding events or shorter hospital stays.

How much papaya leaf extract for dengue?

Trials used standardized papaya leaf extract capsules of around 1100 mg/day, or 25 mL of leaf juice twice daily, for about 5 days. Papaya leaf extract does not replace medical monitoring in dengue.

Does papaya leaf extract help low platelets from chemotherapy?

Not established: a meta-analysis on chemotherapy-induced thrombocytopenia found only a small, low-quality body of evidence for papaya leaf extract, and the dengue results should not be assumed to carry over.

Is papaya leaf extract safe?

Short-term papaya leaf extract was well tolerated in trials, with occasional nausea and a bitter taste. Avoid it in pregnancy and do not combine it with warfarin, aspirin or other anticoagulants without medical supervision.

Scientific references

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