2 sentences

1. 这种药的药性平和，副作用非常小。

   zhè zhǒng yào de yào​xìng píng​hé, fù​zuò​yòng fēi​cháng xiǎo.

   The nature of this medicine is mild, and the side effects are very small.

   Source: Dong Chinese Dictionary

2. 这种药药性温和，不会产生强烈的副作用。

   zhè zhǒng yào yào​xìng wēn​hé, bù huì chǎn​shēng qiáng​liè de fù​zuò​yòng.

   This medicine is mild and will not cause strong side effects.

   Source: Dong Chinese Dictionary