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compositionComposition:VALPROIC ACID-500MG
prescription
Prescription Medicine
info
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DISOVAL ER 500MG TABLET is used to treat seizures and manage manic episodes in bipolar disorder. It also helps prevent migraine attacks. It supports better brain stability and reduces symptom frequency. This helps improve daily functioning and overall quality of life.

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Written By Santoshini Reddy G , M Pharmacy
Reviewed By Dr Aneela Siddabathuni , MPharma., PhD
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More about the Product

Composition :

VALPROIC ACID-500MG

Manufacturer/Marketer :

Ranbaxy Laboratories Ltd

Consume Type :

Oral

Expires on or after :

Jan-27

Return Policy :

Not Returnable

About DISOVAL ER 500MG TABLET

DISOVAL ER 500MG TABLET is an oral prescription medication used to control various types of seizures in people with epilepsy. It is also prescribed to treat the manic phase of bipolar disorder and to prevent migraine headaches from occurring. This medicine works by calming overactive nerve activity in the brain to help stabilise your mood and prevent abnormal brain signals.

To get the best results, you must take DISOVAL ER 500MG TABLET consistently every day at the same time as directed by your doctor. You can take this medicine with or without food, but taking it with meals can help prevent an upset stomach. Incorporating a regular sleep schedule, managing stress levels, and avoiding known seizure or migraine triggers can also support the effectiveness of your treatment.

While taking DISOVAL ER 500MG TABLET, you may experience some common side effects such as mild sleepiness, nausea, or temporary hair thinning. However, you must seek medical help immediately if you notice serious symptoms like severe abdominal pain, dark urine, yellowing of your skin or eyes, or unusual mood changes.

Before starting this medication, tell your doctor if you have a history of liver problems, kidney disease, or pancreatic disorders. Do not take this if you have a family history of severe liver damage or genetic mitochondrial disorders. Pregnant women, or those planning to become pregnant, should not take this medicine for migraine prevention, and should only use it for epilepsy or bipolar disorder if no other treatments are suitable, due to a high risk of birth defects.

DISOVAL ER 500MG TABLET can interact with alcohol, which can worsen drowsiness, and with other medicines like aspirin or certain antidepressants by changing how your body processes them. If you are pregnant, breastfeeding, or an older adult, consult your doctor or pharmacist to discuss the risks and benefits before starting this medicine.

Uses of DISOVAL ER 500MG TABLET

DISOVAL ER 500MG TABLET is used for the treatment of epilepsy (seizures), bipolar disorder, and migraine. The detailed uses of DISOVAL ER 500MG TABLET are as follows:

  • Epilepsy and Seizure Control: DISOVAL ER 500MG TABLET helps prevent and control various types of seizures, including absence seizures, complex partial seizures, and generalised tonic-clonic seizures, by reducing abnormal electrical activity in the brain.
  • Bipolar Disorder (Manic Episodes): DISOVAL ER 500MG TABLET helps stabilise mood swings and manage manic episodes, which are periods of overly high, excited, or irritable mood.
  • Migraine Prevention: DISOVAL ER 500MG TABLET reduces the frequency and severity of migraine headaches when taken daily as a preventive treatment.

Key Benefits

DISOVAL ER 500MG TABLET helps manage seizures, stabilise mood in bipolar disorder, and prevent migraine headaches, helping you lead a more active and balanced life.

The following are the benefits of DISOVAL ER 500MG TABLET:

  • Helps reduce the frequency and severity of seizures.
  • Improves mood stability in people with bipolar disorder.
  • Reduces the occurrence of migraine headaches.
  • Supports better concentration and emotional well-being.
  • Promotes greater confidence in carrying out everyday activities.
  • Provides long-term control of symptoms with regular treatment.
Side effects of Disoval Er 500mg Tablet
  • Drink water or other clear fluids.
  • To prevent worsening of pain, limit intake of tea, coffee, or alcohol.
  • Include bland foods like rice, toast, crackers, and rice in your diet.
  • Avoid lying down immediately after eating as it may cause indigestion or heartburn.
  • Avoid acidic and spicy food as it may cause indigestion.
  • Eat eggs for zinc and other nutrients that support healthy vision.
  • Consume blueberries as antioxidants to combat eye strain.
  • Include broccoli in your diet for diverse eye-boosting nutrients.
  • Eat sweet potatoes as a natural source of vitamin A.
  • Snack on almonds for vitamin E and eye protection.
  • Add tomatoes to your diet for lycopene and vision protection.
  • Perform exercises that improve binocular vision, such as dot-to-dot cards, coloring within lines, and Brock string tests.
  • Wear an eye patch and perform tasks like playing games and solving puzzles.
  • Patching and eye exercises can improve symptoms.

Directions for Use

  • Swallow the tablets or capsules whole with a full glass of water. Do not crush, chew, or break it.
  • Take this medicine with food if it causes an upset stomach.
  • Never change your dose or stop taking this medication suddenly without talking to your doctor first. Stopping abruptly can cause your seizures to return or worsen.
  • Always follow your doctor's exact instructions regarding your dosing schedule.

How DISOVAL ER 500MG TABLET Works

DISOVAL ER 500MG TABLET contains valproic acid, which works by stabilising electrical activity in the brain. In conditions like epilepsy, bipolar disorder, and migraines, brain cells can become overactive and send rapid, uncontrolled signals. To help restore balance, DISOVAL ER 500MG TABLET increases the levels of a natural calming chemical in the brain called gamma-aminobutyric acid (GABA), which helps slow excessive nerve activity. It also reduces abnormal electrical signalling by blocking certain sodium channels and T-type calcium channels in nerve cells. Together, these actions help keep nerve signals stable, thereby preventing seizures, managing mood shifts, and reducing processes that can trigger migraines.
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Alcohol

Unsafe

Do not consume alcohol while taking DISOVAL ER 500MG TABLET as alcohol can worsen the side effects of the DISOVAL ER 500MG TABLET, including sleepiness and dizziness.

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Pregnancy

Unsafe

DISOVAL ER 500MG TABLET is a Category D pregnancy drug. It is not recommended for use during pregnancy as it may cause an increase in the risk of a cleft lip, which is a congenital disability in the unborn baby. If you are a female able to have a baby, you must use an effective method of birth control (contraception) without interruption during your entire treatment with DISOVAL ER 500MG TABLET.

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Breast Feeding

Caution

DISOVAL ER 500MG TABLET passes into breast milk and may harm your infant. Please consult a doctor if you are breastfeeding before taking DISOVAL ER 500MG TABLET. Breastfed infants are at risk for valproic acid-induced hepatotoxicity, so infants should be monitored for jaundice and other signs of liver damage during maternal therapy.

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Driving

Unsafe

DISOVAL ER 500MG TABLET may cause dizziness, drowsiness, or fatigue in some individuals. Therefore, avoid driving if you feel drowsy, dizzy or tired after taking DISOVAL ER 500MG TABLET.

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Liver

Caution

Inform your doctor before taking the DISOVAL ER 500MG TABLET if you have a history of liver diseases. Extreme caution is recommended in patients with impaired liver function. Your doctor will weigh the benefits and potential risks before prescribing DISOVAL ER 500MG TABLET.

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Kidney

Caution

Dose adjustment may be needed in patients with kidney impairment. Please inform your doctor if you have kidney impairment.

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Children

Caution

Use is not recommended for children under 10 years old. Your doctor will decide the dose based on your child's condition if they are more than ten years old.

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Heart

Caution

DISOVAL ER 500MG TABLET can be used cautiously in patients with heart disease if prescribed by a physician.

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Geriatrics

Caution

DISOVAL ER 500MG TABLET can be given to elderly patients with extreme caution if prescribed by a physician.

What if I have taken an overdose of DISOVAL ER 500MG TABLET

If you suspect an overdose, seek immediate emergency medical attention or call your local poison control centre. Symptoms of an overdose may include severe drowsiness, shallow breathing, or loss of consciousness.

Diet & Lifestyle Advise

  • Avoid alcohol: Do not drink alcohol while taking this medicine, as it can increase drowsiness, dizziness, and the risk of liver problems.
  • Maintain a healthy diet: Eat a balanced diet and check your weight regularly, as this medicine may increase your appetite and lead to weight gain.
  • Stay well hydrated: Drink plenty of water throughout the day to support kidney function and your overall health.
  • Care for your hair and skin: Use gentle hair care products and moisturising skin creams if you notice temporary hair thinning or dry skin while taking this medicine.
  • Keep a symptom diary: Record your seizures, mood changes, or migraine episodes to help your doctor monitor your progress and adjust your treatment if needed.
health query

Have a query?

How Soon It Starts Working

  • The time required for DISOVAL ER 500MG TABLET to start to work: DISOVAL ER 500MG TABLET ideally shows its action within 1 to 4 hours after administration.
  • The time for which the effects of DISOVAL ER 500MG TABLET last: The effect of DISOVAL ER 500MG TABLET lasts for 13 to 19 hours.

What if you forget to take DISOVAL ER 500MG TABLET

If you miss a dose, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and continue with your regular schedule. Do not take a double dose to make up for a missed one.

Storage

• Store in a cool and dry place away from sunlight.• Keep DISOVAL ER 500MG TABLET out of the sight and reach of children. • Non cold chain - To be stored in cool places at 10ºC to 25ºC or below 30ºC.

Drug Warnings

  • Attend regular blood tests: Get the blood tests your doctor recommends to check your liver, pancreas, and the amount of medicine in your body. This helps ensure the medicine is working safely.
  • Use effective birth control: If you can become pregnant, use reliable birth control while taking this medicine. DISOVAL ER 500MG TABLET can seriously harm an unborn baby.
  • Watch for mood changes: Contact your doctor right away if you notice unusual changes in your mood, behaviour, or thoughts, including feelings of depression or thoughts of self-harm.
  • Tell healthcare providers about this medicine: Inform your doctor, dentist, or surgeon that you are taking this medicine before any procedure. It can affect how your blood clots.
  • Be careful with activities requiring alertness: Do not drive, operate heavy machinery, or do other dangerous activities until you know how this medicine affects you. It may cause drowsiness or reduce alertness.

Drug-Drug Interactions

verifiedApollotooltip
  • Anti-seizure medicines (e.g., phenytoin, carbamazepine): Taking these medicines alongside DISOVAL ER 500MG TABLET may affect how either medicine works and may increase the risk of side effects or reduce seizure control.
  • Blood thinners (e.g., warfarin): Taking these medicines with DISOVAL ER 500MG TABLET may increase the risk of bleeding and may require closer monitoring.
  • Certain antibiotics (e.g., meropenem, imipenem): These antibiotics may greatly reduce the amount of DISOVAL ER 500MG TABLET in the body, increasing the risk of breakthrough seizures.
No Drug - Drug interactions found in our data. We may lack specific data on this medicine and are actively working to update our database. Consult your doctor for personalized advice

Drug-Drug Interactions

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Drug-Food Interactions

verifiedApollotooltip
  • Carbonated beverages (e.g., soda, sparkling water): Consuming these drinks while taking DISOVAL ER 500MG TABLET may increase the risk of irritation to the mouth and throat.
No Drug - Food interactions found in our database. Some may be unknown. Consult your doctor for what to avoid during medication.

Drug-Food Interactions

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All Substitutes & Brand Comparisons

Habit Forming

No

Therapeutic Class

[ANTICONVULSANT]

FAQs

DISOVAL ER 500MG TABLET is used to treat epilepsy/seizures/fits. In addition, it also helps treat manic episodes associated with bipolar disorder and prevent migraine symptoms (like a headache).
DISOVAL ER 500MG TABLET decreases the excessive and abnormal nerve activity in the brain. Thereby helping in controlling seizures.
DISOVAL ER 500MG TABLET helps to treat manic episodes associated with bipolar disorder by increasing the amount of a chemical substance called GABA; this helps block nerve transmission across the brain and provides a calming effect.
DISOVAL ER 500MG TABLET limits the transmission of nerve pain, thereby preventing migraine headaches. Migraines are a neurological condition characterised by intense headaches.
DISOVAL ER 500MG TABLET may cause weight gain due to an increase in appetite. Maintain a healthy weight by following a healthy diet and exercising regularly.
Use an effective method of contraception during the treatment with DISOVAL ER 500MG TABLET. Avoid getting pregnant while taking DISOVAL ER 500MG TABLET as it could lead to serious birth defects. Do not stop taking DISOVAL ER 500MG TABLET and consult your doctor immediately if you become pregnant.
DISOVAL ER 500MG TABLET may cause weight gain due to an increase in appetite. Maintain a healthy weight by following a healthy diet and exercising regularly.
DISOVAL ER 500MG TABLET may cause common side effects such as nausea, vomiting, headache, sleepiness, tremor, weakness, dizziness, stomach pain, and weight gain. If these side effects persist or worsen, please consult your doctor.
DISOVAL ER 500MG TABLET contains Valproic acid as its active ingredient.
Take DISOVAL ER 500MG TABLET with food to avoid stomach upset or as advised by your doctor.
You are recommended to avoid alcohol consumption while taking DISOVAL ER 500MG TABLET as it may worsen the side effects of the DISOVAL ER 500MG TABLET, including sleepiness and dizziness.
No, DISOVAL ER 500MG TABLET does not cause addiction. However, DISOVAL ER 500MG TABLET should be used as per the dose and duration prescribed by your doctor. Do not self-medicate.
DISOVAL ER 500MG TABLET does not cure epilepsy; it only helps prevent seizures. However, you must take DISOVAL ER 500MG TABLET for as long as your doctor advises. If you face any difficulty while taking DISOVAL ER 500MG TABLET, consult your doctor.
If you stop taking DISOVAL ER 500MG TABLET suddenly, it may increase the risk of recurrence of seizures. Therefore, it should be stopped gradually. If you feel the need to discontinue DISOVAL ER 500MG TABLET, please consult your physician.
Some birth control pills (oestrogen-containing birth control pills) may lower the levels of DISOVAL ER 500MG TABLET in blood. Thus, inform your doctor if you are using birth control pills and discuss with your doctor about a suitable method of contraception.
DISOVAL ER 500MG TABLET is safe for long-term use in many patients when prescribed by a physician. In rare cases, prolonged use of DISOVAL ER 500MG TABLET may weaken bones, thereby increasing the risk of fractures (osteopenia and osteoporosis). Get regular checkups for bone health if you have been taking DISOVAL ER 500MG TABLET for a long time.
DISOVAL ER 500MG TABLET may cause hair thinning, hair colour changes and even hair loss. If you have any concerns about this, please ask your doctor whether it is possible to reduce the dose of DISOVAL ER 500MG TABLET. Your hair may regrow after either lowering your dose or changing medication.
Your doctor will order regular blood tests to check the levels of DISOVAL ER 500MG TABLET in your body and to monitor how well your liver and blood cells are working. This ensures the medicine is working safely and effectively. Talk to your doctor if you have questions about your tests.

Disclaimer

While we strive to provide complete, accurate, and expert-reviewed content on our 'Platform', we make no warranties or representations and disclaim all responsibility and liability for the completeness, accuracy, or reliability of the aforementioned content. The content on our platform is for informative purposes only, and may not cover all clinical/non-clinical aspects. Reliance on any information and subsequent action or inaction is solely at the user's risk, and we do not assume any responsibility for the same. The content on the Platform should not be considered or used as a substitute for professional and qualified medical advice. Please consult your doctor for any query pertaining to medicines, tests and/or diseases, as we support, and do not replace the doctor-patient relationship.

Reference

  1. Drugs.com Clinical Review Team. Valproic Acid Clinical Drug Monograph. Auckland, NZ: Drugs.com; 2026. [Accessed on 02 Jun. 2026]Check here
  2. Electronic Medicines Compendium (EMC). Pil.6102 Patient Information Leaflet (PIL). Cheshire, UK: Datapharm; 2025. [Accessed on 02 Jun. 2026]Check here
  3. U.S. Food and Drug Administration (FDA). 018081S065 018082S048Lbl [FDA Prescribing Information]. Silver Spring, MD: FDA; 2024. [Accessed on 02 Jun. 2026]Check here
  4. National Health Service (NHS). Valproic Acid - NHS Medicines Reference Guide. London, UK: NHS; 2025. [Accessed on 02 Jun. 2026]Check here
  5. Valporic acid. 1978. [Accessed on 19 Mar 2019]Check here
  6. Valproic acid. 2026. [Accessed on 21 Apr. 2026]Check here
  7. Sodium valproate: medicine to treat epilepsy and bipolar disorder [Internet]. nhs.uk. 2025 [Accessed on 10 Mar 2025]Check here

Country of origin

India

Manufacturer/Marketer address

SUN HOUSE, CTS No. 201 B/1, Western Express Highway, Goregaon (E), Mumbai 400063
Other Info - DIS0134

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