Why do some people react badly to generic medications? Even though generics are approved as equivalent, differences in inactive ingredients and absorption can cause real side effects-especially for drugs with narrow therapeutic indexes like levothyroxine and warfarin.
Switching to generic medications is usually safe and saves money, but some people need to monitor their health closely-especially those on drugs with narrow therapeutic indices. Learn how to track symptoms, when to get tested, and what to do if you notice changes.