"起提神作用的东西" can be translated into English as "something that has a stimulating or refreshing effect" or, more concisely, "a stimulant" or "something to perk one up" (in a more colloquial context).
If referring to substances like coffee, tea, or energy drinks, you could say: "A stimulant like coffee or tea can help perk you up."
For a more general description: "Something that has a refreshing or energizing effect."
The choice depends on the context and level of formality.