is laetrile viable alternative

A friend of mine recently discovered she has small cysts on her lymph nodes. The final tests are not back yet so obviously we are hoping they are not malignant, but started looking at treatment options available in case they are. I have heard some bad things about chemotherapy so started checking out other alternatives like laetrile. I mentioned this to a co-worker and he had nothing but positive things to say about laetrile and mentioned a website, Apricot Seeds & Vitamin B17 | Natural Cancer Prevention and Treatment, Alternate Treatment for Cancer Recovery Success (http://www.alternatecancercure.com), to check out. I don't know very much about all this, I have heard of laetrile and was wondering if anyone knows if it is successful against cancer?