The cancer did not progress over an average of 6 months in these patients.
In another small study, 9 people with advanced pancreatic cancer were given chemotherapy once a week for 3 weeks along with IV vitamin C twice a week for 4 weeks during each treatment cycle. In a study of people newly diagnosed with pancreatic cancer, IV vitamin C did not interfere with gemcitabine. Very few side effects were reported from the vitamin C treatment. The nine participants who completed the treatment had stable disease as shown by imaging studies. Five study participants did not complete the vitamin C treatment because the tumor continued to grow during treatment. In a small study of 14 people with advanced pancreatic cancer, IV vitamin C was given along with chemotherapy and targeted therapy ( erlotinib). Several studies of IV vitamin C given alone or in combination with other drugs in people with cancer include the following: Have any studies of IV vitamin C been done in people with cancer?. For information on laboratory and animal studies done using intravenous vitamin C, see the Laboratory/Animal/Preclinical Studies section of the health professional version of Intravenous Vitamin C. Laboratory studies suggest that high levels of vitamin C may kill cancer cells. Laboratory and animal studies have tested the effects of IV vitamin C. Laboratory and animal studies are done in animals before a substance is tested in people. In animal studies, tests are done to see if a drug, procedure, or treatment is safe and effective. 
In laboratory studies, tumor cells are used to test a substance to find out if it is likely to have any anticancer effects. When given by IV infusion, vitamin C can reach much higher levels in the blood than when it is taken by mouth. Vitamin C may be given by intravenous (IV) infusion or taken by mouth. Vitamin C is also called L-ascorbic acid or ascorbate. It also works with enzymes to play a key role in making collagen.
Vitamin C is an antioxidant and helps prevent damage to cells caused by free radicals. Vitamin C is a nutrient that is found in food, such as oranges, grapefruit, kiwi, peppers, and broccoli, and in dietary supplements.
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