I also say that these types of medications "may work, or may not work". However, I feel that other alternative treatments that DO work are preferable. Crimzy, its too bad you continue to take issue with that, but, like you, I'm entitled to my opinion. And my opinion is backed by knowledgeable, well published people.
Its a sad thing to have an ich break out in your display tank, especially if that tank is a reef tank. Do you think that adding medications to a reef tank does not have some kind of effect on the entire ecosystem?
Ultimately the best treatment is to quarantine fish prior to putting them in your tank, and then treating them in the QT. And for reefers, who have thousands sunk into their systems, its just crazy, imo, to risk everything just to avoid setting up a 20 gal quarantine.
There may be rare instances where hypo doesn't work, but mostly that is due to hobbyist error.
mujtba, I hope this medication works for you. Your time is not time wasted; I'm adding this topic to the FAQ. So much for me being totally one sided, and unyielding.