Posted 5/5/2014 1:38 PM (GMT 0)
Some report pred working within a couple of days, some in a week, others in 2 weeks. Mostly, it depends how much damage your uc flareup caused. The more damage incurred, the longer it takes to heal.
If you are not experiencing an improvement in uc symptoms within a couple weeks, then most certainly contact your GI as, something isn't right in that situation. Perhaps, you instead have cdiff that requires antibiotics if pred does nothing. Alternatively, you might need a higher dosage of pred in order to get a response.