Most ich meds kill the benificial bacteria as well, so your tank would start another mini-cycle. Besides, most meds can stress the fish.
I would stay away from ich meds, just raise temps, perform WC, and probably use salt as well. Several years ago, I had ich on 1 of my clown loaches. I just raised the temp, performed WC, used salt, and kept the light off most of the time. My thinking was, ich was caused by stress. If the lights were off, the fish would sleep, less stress. What do we do when we are sick? We try to get some rest. After a week or so, the CL was cured, no fish illnesses/deaths, and no sign of an outbreak. Strangely, a few weeks ago, it appeared that 1 of my CL's had ich, but this time, I left the tank alone, except for my usual feedings and tank/equipment maintenance. It was cured after a few days and it never spread. No fish deaths as well.