Varenicline, a smoking cessation drug, is being withdrawn. It is believed that the impurity incident, which occurred last month, affected the cancer.

According to the MFDS on the 26th, eight items of Varenicline have been withdrawn since June.

On the 22nd of last month, the MFDS also began a safety survey after recovering Pfizer's Champix due to concerns over cancer-causing substances in countries such as Canada. As a result, pharmaceutical companies with Varenicline will have to conduct tests on impurities by August 31.

The MFDS recommended that Varenicline are needed to use only the minimum amount for treatment and consider other treatments if possible until the results o