这种药有些不好的副作用。

The drug has some bad side effects.

《牛津词典》

如果开了镇静剂，一定要让医生告诉你它可能带来的副作用，例如上瘾。

If a tranquilizer is prescribed, be sure your physician informs you of its possible side effects, such as addiction.

《柯林斯英汉双解大词典》

恐怕这是我给你开的药的副作用。

I'm afraid it's probably a side effect from the drugs I put you on.

youdao

A more recent side effect of Ambien that's quite serious is some people become--have the compulsion while they're sleeping to go driving, which is not good.

最近发现安必恩一个挺严重的副作用,有些人睡觉时,会有梦游驾车的冲动，这可不是好事。

耶鲁公开课 - 心理学导论课程节选

So, one of the bizarre side effects is some people with Ambien while sleeping go downstairs, open up their refrigerator and eat huge amounts of food.

服用安必恩的其中一个副作用,就是梦游走下楼，打开冰箱，吃一大堆东西。

耶鲁公开课 - 心理学导论课程节选

And again, a related problem that people run into is side-effects. You call a function and it returns a value, but maybe it, on purpose or on accident, modifies one of the actual parameters.

另外，一个人们常碰到的相关问题,就是副作用，你调用一个函数它返回一个值,但是故意或者无意的,它可能会修改一个实参的值。

麻省理工公开课 - 计算机科学及编程导论课程节选