the fact that taking them in combination with other medications might put you at increased risk for something that you wouldn't otherwise being countering or be at risk for.
我不太懂为何you wouldn't 后面难道不应该是原形吗，为什么是being countering ，那or 后面是跟哪一个句子并列呢？为何 or 后面又是原形？？？