Hi Eileen, if its making you very uncomfortable and feeling desperate, then I would definetly return to your GP ASAP and let him/her know how it 's affecting you and leaving you feeling.
Am sure they will help you and get you on something you "can" tolerate keeping you free of the gastric/digestive side effects you seem to be suffering with.
Poor you, it can affect some people quite badly. It did with me... Couldnt tolerate it in ANY formula type. It actually made me extremely ill. :sick: Took me ages to recover too.
So I can truly feel for you with this one!
Do let us know how you get on if you decide to see the doc about this.
Anna.x