No, cancer patients shouldn't drink alcohol.
It is recommended to abstain from alcohol consumption, recommends the American Cancer Society's Diet and Physical Activity Guidelines for Cancer Prevention. Men should not consume more than two beverages per day, and women shouldn't consume more than one drink per day.
The negative effects of chemotherapy and other cancer treatment medications can be made worse by alcohol. These negative consequences consist of oral sores, dehydration, and nausea. Additionally, drinking alcohol raises the possibility of getting cancer again.