Abvida 50MG Tab
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Sodium Valproate 500 mg (controlled release/extended release)
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Epilex Chrono 500 mg is used for treatment of epilepsy/seizure disorders (generalised and partial seizures), prevention of recurrent seizures; may also be used for bipolar disorder (mania) and migraine prophylaxis as prescribed.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026
Epilex Chrono 500 mg contains Sodium Valproate 500 mg (controlled release/extended release). It belongs to the Valproate anticonvulsant (GABA-enhancing agent) class of medicines.
Sodium valproate increases levels of the inhibitory neurotransmitter GABA in the brain and modulates neuronal ion channels. This stabilizes overactive nerve activity and helps prevent seizures.
Oral tablet (controlled release). Take exactly as prescribed, usually once or twice daily at the same time each day; swallow whole—do not crush or chew. Preferably take with food to reduce stomach upset.
Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.
Take it as soon as you remember. If your next dose is almost due, skip the one you missed — never take two doses together to catch up.
An overdose of this medicine can cause deep unconsciousness, slowed breathing and dangerous heart rhythm disturbance. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.
Most side effects of Epilex Chrono are mild and settle as the body adjusts. Reported side effects include:
Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.
| Pregnancy | Not recommended (high risk of birth defects and neurodevelopmental disorders); use only if no suitable alternative and under specialist supervision |
|---|---|
| Breastfeeding | Consult your doctor before using this while breastfeeding. |
| Alcohol | Avoid (can increase drowsiness and may worsen seizure control) |
| Driving | Do not drive or operate machinery while taking this medicine. |
| Kidney | Consult your doctor if you have kidney disease. |
| Liver | Consult your doctor if you have liver disease. |
| Habit forming | No |
Prescription-only antiepileptic. Do not stop suddenly (risk of seizures). Serious risks: liver toxicity (especially in young children or with multiple anticonvulsants), pancreatitis, hyperammonemia/encephalopathy, low platelets/bleeding, severe skin reactions. Contraindicated in active liver disease and known mitochondrial disorders (e.g., POLG mutations). Monitor liver function tests and blood counts; use caution in elderly and in patients with bleeding disorders. May cause drowsiness—avoid driving if affected.
Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Valproate-containing medicines are contraindicated in pregnancy for epilepsy unless no alternative exists, and in all women of childbearing potential without a pregnancy prevention programme. Several are not suitable in significant liver disease.
Carbamazepine, phenytoin, phenobarbital/primidone, lamotrigine (increased risk of rash), topiramate (risk of hyperammonemia), warfarin/anticoagulants and antiplatelets (bleeding risk), aspirin (increases valproate levels), benzodiazepines and other CNS depressants (increased sedation), rifampicin (reduced levels)
Store below 25°C in a dry place, protected from moisture and light. Keep in original strip/container and out of reach of children.
Take it at the same times every day; a missed dose is a common trigger for a seizure. Keep a seizure diary and take it to your appointments. Tell your doctor before planning a pregnancy — the regimen may need to be changed well in advance. Do not drive until you meet the legal seizure-free period and your doctor agrees.
Medicines with the same active ingredient (Sodium Valproate 500 mg (controlled release/extended release)). Ask your doctor or pharmacist before switching brands.
| Medicine | Pack | Price | vs Epilex Chrono 500 mg |
|---|---|---|---|
| Torvate 500 TabletTorrent Pharmaceuticals Ltd | tablet · 10`S | ₹56 | 61% cheaper |
| Encorate 500 mg TabletSUN PHARMA | tablet · 10`S | ₹83 | 41% cheaper |
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The information on Epilex Chrono 500 mg is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.