In short: Oxcarbazepine, sold in the UK under the brand name Trileptal and as generic versions, is an anti-seizure medication (ASM) used for focal seizures. Most early side effects are dose-related and often settle, but oxcarbazepine has one distinctive risk worth understanding: low blood sodium, known as hyponatraemia. Skin reactions also need prompt attention, particularly…

In short: Phenytoin, known in the UK by the brand name Epanutin, is an anti-seizure medication (ASM) with a narrow margin between an effective blood level and a level that causes side effects. Small dose changes can produce large changes in blood level, which is why phenytoin levels are monitored and why staying on the…