Yī / shēng / gěi / tā / kāi / le / yì / zhǒng / jiě / dú / jì / yǐ / jiǎn / qīng / yào / wù / zhòng / dú / de / zhèng / zhuàng

医生给他开了一种解毒剂，以减轻药物中毒的症状。

The doctor prescribed him an antidote to reduce the symptoms of drug poisoning.