Ornidazole is used to treat and prevent epilepsy (seizures). However, it cannot cure epilepsy and will only work to prevent seizures for as long as you continue to take the medicine. Ornidazole may be used alone or in combination with other medicines. The dose and how often you need to take it will be decided by your doctor so that you get the right amount to control your symptoms. It may be increased gradually. You can take this medicine with or without food but take it at the same time each day to get the most benefit. It usually takes a couple of weeks to work. It is important to take this medicine regularly and for as long as you are advised, even if you feel well. Missing doses may trigger seizures and, if you stop, your condition may get worse. It should never be stopped suddenly.