If you have taken suboxone will you feel a 30mg OC?

It depends on several different factors: how much suboxone you took, how long have you been taking it, and if you only took a suboxone once between taking pills: how high your tolerance is to oxycodone.

If you only took one dose of suboxone (between 2mg and 8mg) you should be able to feel the full effect of the OC after 24 hours. After about 12 hours you'll feel some effects, but definitely not what you would normally expect from 30mg of OC. If you've been taking Suboxone for several days in a row, it would be difficult to guage how long it will take for you to feel the full effects. Suboxone has a 36 hour half life so it builds up in your system. The longer you take it and the higher the dose, the longer it will take for it to leave your system completely.