Hi cecilialynn,
My son was on Flagyl for 6 months. Three months pre op, 400mgs three times a days, to help keep infection and inflammation under control and three months post op, 200mg three times day, as the Crohn's specialist subscribed to the view that it would help establish and maintain a longer remission.
The brand tablets, Flagyl, were much better as he did not suffer with the taste issues that the cheaper more powdery generic, Metronidazole, produced. In his case, over the 6 months he did not appear to suffer with any side effects whatsoever.
Good luck!
Dusty. xxx