I'm not familiar with Platinol...may be new since I was treated. At any rate, you can contact the American Cancer Society to get a fact sheet about any specific chemotherapy agent, or you can Google it and see what information you can find.
Regardless, just make sure he's treated with IV anti-nausea meds BEFORE the chemo is given (if that's a chemo that may cause nasea). Zofran is one; I believe there are others. Also, he should be given oral meds to take for 2-3 mornings after the chemo day, and also compazine suppositories just in case.
Hopefully, he'll do as well as I did, and this will soon be a thing of the past!