감기약이 · 감기약을
cold medicine
Example
감기약을 먹으면 졸려서 운전하면 안 돼요.
Cold medicine makes you sleepy, so you shouldn't drive.
Word parts
감 feel+기 energy, air+약 medicine
감기 (a cold) + 약 (medicine).
Good to know
Koreans 'eat' medicine: 약을 먹다 is the normal way to say 'take medicine.'