Correct

内服

/ nèifú /
Strokes

Definition

to take medicine orally (as opposed to applying externally)

Example

As a Verb

(of medicine) be taken orally; be for internal use

1
Zhèzhǒng
这种
yào
yào
nèi
内服
  

The medicine is for internal use.

2
不可
nèi
内服
  

Not to be taken orally. / Not for internal use. / For external use only.

3
Nèi
内服
yùnyào
避孕药

oral contraceptive