Hello Westley,
I have talked to many people who have used it with chemotherapy. They usually wait 3 or 4 days after their treatment before they start using the machine again.
Has your father considered Hydrazine Sulfate? It works far better that chemotheraphy and you do not get sick using it. Dr. Gold has followed many people who have used it and for those who start using it as soon as they find out they have cancer they have about a 43% recovery rate comparied with only 3% for chemotheraphy. Just something to consider. Information about Hydrazine Sulfate can be found at the link below.
http://www.rifevideos.com/cancer_and...e_sulfate.html
Regards,
Jeff Garff