Medicine
Hepatic Drug Metabolism and Enzyme Induction
Quick fact
Rifampin, a tuberculosis drug, can double the activity of key liver enzymes within days—halving the blood levels of many other drugs taken at the same time.
Why this is interesting
You swallow the same medication every day—why does it suddenly stop working? The answer may lie in your liver, where drug-metabolizing enzymes can be 'revved up' by what you ingest.