Hi Lisa,
Panacur and Lapizole have the same active ingredient and it is generally suggested it is used twice a year for 9 days. A lot of people prefer to use the Lapizole cos it in theory tastes nicer to the bunnies.
If an active EC infection is suspected then the course is either 28 days or 6 weeks depending on who you are talking to! I would go with the 6 week course. Once Mowgloi has finished his course I would treat him routinely every 6 months for 9 days alongside Rosie.
Hope this helps,
Vanessa xx