Drug interaction study

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Completed 1

St. John's wort may alter how your body handles other drugs

Knowledge-focused Completed

This study investigates how a specific extract of St. John's wort (Ze 117) influences key enzymes and transporters that process many common medications. Twenty healthy volunteers take a cocktail of probe drugs alone and then with St. John's wort to measure changes in drug levels.…

Matched conditions: DRUG INTERACTION STUDY

Phase 1 • Sponsor: Max Zeller Soehne AG • Aim: Knowledge-focused

Last updated Jun 27, 2026 14:00 UTC

Drug interaction study

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St. John's wort may alter how your body handles other drugs