it can as well as any med. it is best to keep an eye out on the tank parameters.
coppersafe-chelated copper can have residual effects for some time after it has been removed.
I have used it in the past. it is a very effective med. you do need to be aware of the possible effect it has in the tank re leaching meds. and the inhabitants in the futrue.
I have used it and the tank I used it in now houses peppermint shrimp(by accident). keep in mind this tank has had hundreds of water changes in it since..generally I do not advocate using coppersafe in anything other than a hospital tank.