2 sentences

1. 这种药水止咳效果很好。

   zhè zhǒng yào​shuǐ zhǐ​ké xiào​guǒ hěn hǎo.

   This syrup is very effective at relieving coughs.

   Source: Dong Chinese Dictionary

2. 医生给他开了两瓶止咳药水。

   yī​shēng gěi tā kāi le liǎng píng zhǐ​ké yào​shuǐ.

   The doctor prescribed him two bottles of cough syrup.

   Source: Dong Chinese Dictionary