The idiom "dose of own medicine" refers to experiencing the same negative treatment that someone has given to others. Synonyms for this phrase may include "retribution," "comeuppance," "karma," "punishment," "deserved fate," or "reaping what one sows." These synonyms highlight the idea that the person who has administered harm to others will eventually face similar consequences themselves. Other phrases that convey a similar meaning include "tit for tat," "payback," and "what goes around comes around." All of these phrases indicate that actions have consequences and that individuals must be aware of the impact their behavior has on others and the world around them.