Clonazepam, also known as an antiepileptic, is prescribed by doctors to treat seizure and panic attack disorders. It is a benzodiazepine class of drugs that calm brain chemicals and nerves that might be unbalanced. It is not a toxic drug, but it is a highly addictive drug that can easily be abused. And abusing Clonazepam can be toxic as it increases the chances of overdosage that can be fatal too. Also, taking more than 4mg/day can be toxic as it is the highest dosage of Clonazepam. So the question arises if it is not that toxic, then how much Clonazepam is safe? And the answer to that is pretty simple, only the amount or the dosage and the duration prescribed by doctors is safe to be used.