You can refer to too much of something, especially something harmful, as an overdose. An overdose of sun, sea, sand and chlorine can give lighter hair a green tinge
You can say that someone overdoses on something if they have or do too much of it. The city, he concluded, had overdosed on design. OD to take too much of a drug at one time, so that it harms you or kills you overdose on
If someone overdoses on a drug, they take more of it than is safe. He'd overdosed on heroin Medical opinion varies on how many tablets it takes to overdose