Selzic OD 900mg Tablet ER 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 Selzic OD 900mg Tablet ER 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 The most common side effects of this medicine include Nausea vomiting feeling dizzy tired or drowsy and unsteadiness Most of these are not serious Keep taking the medicine but talk to your doctor if these side effects bother you or do not go away However if you notice a skin rash or redness tell your doctor straight away It could develop into a life threatening skin condition called Stevens Johnson syndrome Long term treatment with this medicine can cause osteoporosis reduced bone mass and increase your risk of breaking a bone Anticonvulsants like this medicine may cause suicidal thoughts and behaviors If your mood becomes depressed tell your doctor