Is there a Korean pharmacy in Itaewon?
Yes. Optima Wellness Museum (OWM) Itaewon is a Korean pharmacy at 1F Hamilton Shopping Center, 179 Itaewon-ro, Yongsan-gu, Seoul (Hamilton Shopping Center, 1F).
It is open daily, 11:00–23:00. Pharmacists there can help with skincare, supplements and over-the-counter medicine.