Viganext 500mg sachet is an antiepileptic drug that contains the active ingredient called Vigabatrin. It belongs to the class of medicine called anticonvulsants. This medicine is used to treat various forms of epilepsy. It is used with the current medication to treat uncontrolled epilepsy. It is also used to manage infantile spasms (West's syndrome). Do not take Viganext 500mg sachet if you are allergic to Vigabatrin or any of its ingredients.  Before starting the treatment, inform your physician have or have had depression or any other psychiatric illness in the past, if you have had kidney problems or any problems with the eyes. It is important to notify your doctor if you are pregnant, planning to get pregnant, or think you may be pregnant or breastfeeding. This medicine might lead to decreased eyesight because of eye issues like retinal disorder, blurry vision, or conditions like optic atrophy or optic neuritis  If you notice changes in your vision, it's important to contact an eye specialist for advice.