Hi Laura, Thanks for your reply. Are you taking Doxycycline once day and when do you take it ? My husband is taking his in the morning on a empty stomach with water. He takes his Tarceva at 1:30 or 2:00 pm. Do you take them both together? Also at what time do you take the Ondansatron and how do you take it? Are you using any lotions or cleaner tha have worked for you? Thanks agian In Christ Carolyn