Tag: drug side effects
- By Percival Harrington
- /
- 3 Jan 2026
Dechallenge and Rechallenge in Drug Side Effects: What These Tests Mean
Dechallenge and rechallenge are key methods used to confirm if a drug is causing side effects. Stopping the drug to see if symptoms improve is dechallenge; restarting it to see if the reaction returns is rechallenge. These steps help doctors and regulators determine true drug-caused reactions.