This is the 4836th most frequent Chinese word.
良药
Effective medicine; good remedy.
In this case, '良药' is used literally to refer to an effective medicine for physical health.
医生推荐的草药是一种有效的良药。
The herbal medicine recommended by the doctor is an effective good medicine.
The word '良药' is used metaphorically to describe music as something that heals emotional wounds.
音乐是治疗心灵的良药。
Music is the good medicine for healing souls.
Here, '良药' metaphorically represents friendship as a remedy against solitude.