I would be finding another doctor.
I was on Remicade for 2.5 years until I built antibodies to it. Along with the reaction, the drug simply stopped working so I got worse and worse before being hospitalized.
My new GI immediately yanked me off Remicade - said it wasn't working anymore and was causing me to reaction each time. After high doses of Prednisone did nothing, we took a chance on Humira before it was approved by the FDA. It worked miracles within weeks and I was able to eat for the first time in months.
I've had no reactions, not even a site reaction which is relatively common. I don't see the harm in trying it, personally.