Flare up??

Sorry to hear you are flaring. The fastest recovery is always corticosteroids, whether that is an oral steroid like prednisone or a rectal-route steroid like cortenema. Rectal route causes less side effects.

Mesacol should be dosed up to 4.8 grams per day, I would ask your doctor about an increase in dose. You are essentially taking a maintenance dose now. Flare doses are more.

I'd also strongly suggest getting a rectal-route med. An anti-inflammatory enema with the same ingredient as your mesacol (pentasa enema, rowasa enema, or mesalamine enema). Those meds are pretty quick working. Take one nightly for 3-4 weeks and you should have an improvement.