What term is used for getting "too much" of something?

The term that best represents getting "too much" of something is "excess." This term signifies an amount that surpasses what is necessary or normal, indicating an overflow of a particular substance or quantity.

While "overdose" specifically refers to taking an excessive amount of a substance, particularly drugs, "excess" has a broader application that can encompass various contexts, such as food intake or supply. "Toxic" typically describes something harmful or poisonous but doesn’t inherently convey the idea of simply having too much of something. "Surplus" also refers to an excess amount but primarily in the context of goods or resources rather than the general notion of going beyond a desirable quantity.

Therefore, “excess” aptly captures the concept of having too much, making it the most fitting term in this context.