Tag: pharmacovigilance

Dechallenge and Rechallenge in Drug Side Effects: What These Tests Mean

Dechallenge and Rechallenge in Drug Side Effects: What These Tests Mean

by Daniel Stephenson, 30 Jan 2026, Health and Medicine

Dechallenge and rechallenge are key clinical tools used to determine if a drug caused a side effect. Stopping the drug (dechallenge) and sometimes restarting it (rechallenge) helps confirm causality-essential for patient safety and drug regulation.

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Drug Interactions Discovered Post-Market: What It Means for Your Safety

Drug Interactions Discovered Post-Market: What It Means for Your Safety

by Daniel Stephenson, 14 Dec 2025, Medications

Drug interactions discovered after approval can cause serious harm. Learn how post-market surveillance catches hidden risks like statin-antifungal combos and grapefruit-drug reactions that clinical trials miss.

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