Lung cancer is one of the most common cancers in both men and women. According to Dr. Abram Hoffer, patients with a better nutritional plan and daily Vitamin C supplementation improved their life quality. In this case report we present the case of a 56-year-old Hispanic male patient diagnosed with lung cancer on 2012. After undergoing surgery and chemotherapy, he started a high dose intravenous Vitamin C protocol on December 2013. The treatment continued until June 2015, when the patient decided to stop the treatment. A maximum of 75 gr of Vitamin C in 1,000 cc lactated Ringer's was given three times a week in a period over a year and a half. Patient's CEA levels continued to be within normal levels while high doses of Vitamin C infusions were given. Many case reports suggest that patients with lung cancer that received high doses of intravenous Vitamin C can live up to 10 years. A level of Vitamin C in plasma above 400 mg/dL is toxic to tumor cells, this can be achieved with periodic Vitamin C infusions. Our case support that the usage of high doses of IV Vitamin C can be effective in the treatment of patients with cancer without secondary effects.