Is 4 dilaudid a day same as 12mgs hydromorph contin?

Hi

I am wanting some information. I was on dilaudid for mirgrianes.
My doctor changed me over to hydromorph contin (6mg).
I was taking at least 4 dilaudid a day, now him changing me 2 6mgs of hydromorph contin. Is this reducing my dosage???

Thank you for the help

does it really work for migrianes, what your doctor is doing is giving you a timed released pill and a 6mg is stronger, but you should ask him for 1 or 2 4 mgers because they are immediate release, then by the time they wear off the contin pill kick in and should give you at least 8 sometimes 10 hours of relief, then take the other 4 mger if you have any breakthrough pain.