Supplement × Prescription·a caution·Emerging evidence
Ginkgo Biloba may increase bleeding tendency and can be a concern with Valganciclovir when valganciclovir causes thrombocytopenia or the patient is anticoagulated.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
What is happening. Ginkgo Biloba may increase bleeding tendency and can be a concern with Valganciclovir when valganciclovir causes thrombocytopenia or the patient is anticoagulated.
Mechanism. Additive platelet or coagulation effects can become clinically relevant when the drug or disease state increases bleeding risk.
Recommendation. Avoid high-dose use unless the prescriber agrees; seek care for unusual bruising, bleeding, black stools, or severe headache.
Effect on the composite score
If both Ginkgo Biloba and Valganciclovir are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).
The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.
Every claim on this page is cited. PMIDs link straight to PubMed.
Check your full routine
Drop your supplements and prescriptions into NutriStack and it runs every pair at once: every interaction, synergy, timing rule, and contraindication, each linked to its primary source.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.
NutriStack