@sdcgcarroll Hi I have ET and Jak2 as well. I haven't found alot of information about drugs etc that react with the hydroxycarbamide I take. I usually google if I want to try something I think may help with the side effects of hydroxycarbamide and the standard reply is to ask your doctor. So that's what I do. A list of substances that effect the medication we are on would be wonderful but in the meantime I will have to consult my doctor each time I want to try something new.