I believe it depends on how much radiation (how many grays) you are getting. For example, when my husband got his first treatment, it was 70 grays given over 35 days, so it’s 2 grays each day. Then when he needed some more radiation later, he was given 20 grays over 5 days, that’s 4 grays a day. I asked the RO and that’s what he told me. The second dose would actually be stronger.

I’m not saying you will have a lot of side effects, I just think it’s good for you to know.

Gloria
She stood in the storm, and when the wind did not blow her way, she adjusted her sails... Elizabeth Edwards

Wife to John,dx 10/2012, BOT, HPV+, T3N2MO, RAD 70 gy,Cisplatinx2 , PEG in Dec 6, 2012, dx dvt in both legs after second chemo session, Apr 03/13 NED, July 2013 met to lungs, Phase 1 immunotherapy trial Jan 18/14 to July/14. Taxol/carboplatin July/14. Esophagus re-opened Oct 14. PEG out April 8, 2015. Phase 2 trial of Selinexor April to July 2015. At peace Jan 15, 2016.