If you use one that is a medical Dr they will know.
And there is a very good one in the Bahama's that has a lot of medical Doctors, you may want to look into.
Also Immunocal is very effective and is in your Dr's PDR under Immunotec.Some insurance co's will pay for it if your Dr's prescribes it and you need to do your homework to show him the information ,because if he is not aware of it and most Dr's aren't becasue they don't send reps to Dr's or take them out to dinner or lunch or send nice looking women to tell them about it.
So you have to be informed and inform him or her.
Go to www.immunocal.me and google immunocal and glutathione.
Also youtube search Immunocal and cancer or your specific type of cancer to see if it shows up.
To get first hand experiences with it.
Also they will likely just prescribe 1 box per day, that is way to low for cancer.You can contact Immunotec at that site or me for info for your Dr. Even though it is network marketing it bypasses all that to a pharmacy for Insurance to take care of it, if they do. Ask you insurance company.
It is under Immunotec in the PDR (Physcians Desk Reference)
Most cancers take 4 packets per day. One an empty stomach.