What are your parameters? I don't think anyone on here is comfortable giving advice without the numbers. Just saying they're ok doesn't tell me anything. If I get numbers (ore even a photo of the test vials) I can help you more.
When a tank full of fish is cycling, I'd recommend a 50% change and then add some beneficial bacteria from a "live" filter directly to the filter intake. Check H2O the next day, if still high, do a 30% change not touching the gravel. Repeat the next day if necessary. Don't feed the fish for a few days.
However, I don't know what is really wrong with you tank, so check your water and post the numbers before going any further.
You can stop the meds any time-what are they anyway?
