I really would like to know if anyone else has had side effects from optifast. I'm on day 4 and daily routine is 2 optifast bars, 1 optifast choc moose and a cup of allowed veggies. And I for past two nights have had severe wind pain, (sorry but) the runs at night. Pain quite bad that I've had 2 nurophin and I'm going to try sleep off again with electric blanket. Woke fine today and fine all day. Now happening again. Any clues?

I have tried bars in the past and it was ugly and painful. Not sure if it is sugar alchohols or fiber. I hope it gets better for you.

I think touch wood it maybe improving