Cansema can be both externally applied and internally taken. There is an herbalist who would be glad to talk to you at the 1-800 number. I was trying to help a friend who has multiple myeloma and a man by the name of (I think) James helped us on what to get. I think eating a diet more on the alkalytic side will help a lot too. There are many studies done on people on islands, primitive tribes, etc. who survived on fruits, veggies and fish and not one case of cancer was found in anyone...makes me think Americans totally have the worst diet. I am at risk for lymphoma and eat no Sugar or processed foods; or red meat. My cholesterol and triglycerides are the lowest they've been in years. Feel free to email me for my skin cancer pictures of how the Cansema attacked the cancer cells... wenron1983@yahoo.com