I suggest reading online about the drug. The drug company will tell you that you should be ok with cold after day 4 or 5. I found out that I didn't have to eat and drink everything warm,,,,,just for the first 4 or 5 days, which include the days I was being treated. My Oncologist suggested that I try sips of cold tap water after day 5 and see how I did. What will happen IF you can't drink cold is your throat will feel like it is closing up. It doesn't really!!! just gives you that feeling. IF it happens, drink warm water and you will be fine. I found I could drink iced drinks even after day 4 or 5. You still will have the fun side effects of the drug.....numb lips, neck, numbies of the feet and hands. Just keep track of how you are doing on the drug and how long between treatments the numbies last. They went away for me inbetween but they don't for some. Those normally have to have ruduced or drop the Oxilaplatin all together. Just be sure to talk to your Oncologist and tell him/her everything.
Actually, for me, most food tasted better to me at room temperature! LOL I pretty much lived on cold cereals, poached eggs, cool pizza and homemade noodles with beef or chicken!!
Hope this helps you a bit!! Hang in there, you will get through this!