Answer
Do not double the next dose. Follow the leaflet for the exact product because missed-dose instructions differ between formulations; ask a pharmacist if uncertain.
Sources for this answer
- Ethosuximide 250 mg capsules, soft Epesri 250 mg capsules, soft — Current selected SmPCemc · Summary of Product Characteristics
- Ethosuximide Neuraxpharm 500 mg/5 ml oral solution — Current selected SmPCemc · Summary of Product Characteristics