I've been on Hydroxy for the last 3 months and was given another prescription today by my consultant. She put plaquenil on the prescription and said something about less side effects. But when I got home I discovered that the chemist has given me quinoric. Does anyone else know anything about differences in side effects? I don't want to take them back if its exactly the same, but the plaquenil sometimes upsets my tummy and I don't want to take quinoric if its gong to be worse.