1. She dosed herself with aspirin when she had a headache.
    头疼时，她就服用阿斯匹林。

2. Perhaps some aspirin or painkillers might help.
    或许一些阿斯匹林或止痛药可能会有帮助.

3. John took an aspirin for his headache.
    约翰吃了一片阿司匹林治头痛。