Typical adult Rituxan Rx is 4 IV infusions 7 days apart. Each of mine took about 4.5/5 hours but I believe they were intentionally running a little slow to allow monitoring of systemic reaction - didn't have any. I was also pre-med with two Tylenol and 50mg Benadryl IV to minimize system reaction. Benadryl puts me to sleep for 2-2.5 hours - just can't stay awake. It's easy - just long. Possible side effect, for me, is a metallic "taste" that just won't go away but not everyone has that. Took my own lunch or wife brought me something @ noon and ate while IV in progress. Took books, phone etc to fill the time.
Blessings of enough...
Faith to trust our Lord
Joy to share with others
Strength to help the weak
Love to share with the hurting
Steve C