Hi everybody. I have just taken my second table of Hydroxycarbamide. So far, so good. I am writing a 'just in case' post as I know that a lot people on this drug have mouth sores. A few weeks ago,on this sight, there was a very helpful post about a mouth rinse for mouth problems.I took down the details and the rinse included water, salt and baking soda. Could someone tell me what is baking SODA? I know baking powder and sodium bicarbonate, but not sure about baking SODA. I can't find the original post, but I often get mouth ulcers, so I would like to be prepared. Any help would be most appreciated.