I have no personal experience or knowledge of Zeolite, but have been searching the National Library of Medicine at www.pubmed.org to find substances that really work against cancer. I have found that the following substances are very effective in destroying cancer cells and are safe to use, if you make sure you get the genuine product.
Artesunate or Artemisinin are derivatives of Artemisia and have been used for thousands of years in China, currently as a malaria treatment. These have been found to be very potent anti-cancer treatments.
Berberine, which is derived from many plants, such as Goldenseal is also very active against cancer cells, even leukemia.
Organic Germanium, sometimes called GE32, or Germanium Sesquioxide has cured many people of cancer, even non small cell lung cancer. It is a powerful antioxidant - read the research, it is very effective.
Agrimonia works by 'tanning' the skin cells, so that new cancers can not penetrate the cells and grow. Agrimonia also boosts the immune system.
Astragalus is also a powerful immune booster and helps other treatments to effectively fight cancer.
Beta glucans actually 'switch on' the immune system to fight cancer cells and to recognize them as invaders, rather than self. They stimulate the immune system into action, but do not overstimulate it to cause auto-immune disease.
Quertcetin with Bromelain is also a very good supplement to take, they are both powerful anti-cancer agents and work well together.
It is very important to have a healthy diet while fighting cancer, I suggest reading Bill Henderson's book 'Beating Cancer Gently'. He gives clear and concise guidelines on diet and treatments.
I encourage you to read, research and learn, there is so much information available about this disease, you can become an expert.
I know this disease is curable, I wish you every success in finding the right path for you.
May God be with you!
Benicia