valnigo-chrono 500mg tablet - Sodium Valproate (333mg) + Valproic Acid (145mg) medicine

Amvalor Chrono 500 Tablet CR: Complete Medicine Guide

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🏭 Snig Pharmaceuticals Pvt Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 23, 2026
⚠️ Hepatotoxicity Risk ⚠️ Nephrotoxicity Risk 🤰 Pregnancy Category Not established from the available information. However, valproate is known to be harmful to the unborn baby and should be avoided during pregnancy unless absolutely necessary for epilepsy, under specialist care. 📋 Prescription Required 💊 Generic Available
Medically Reviewed
12 min read
Evidence: Well-established for epilepsy and bipolar disorder.
Reviewed by
SaathiMed Expert Panel | Sep 23, 2026

When to Call Your Doctor IMMEDIATELY

  • Yellowing of the skin or eyes (jaundice)
  • Severe abdominal pain, nausea, and vomiting
  • Unusual bleeding or bruising
  • Confusion, lethargy, or decreased consciousness
  • Rash with fever, blisters, or peeling skin
  • Seizures that worsen or change in pattern
  • Suicidal thoughts or severe mood changes
  • Decreased urine output or swelling

If experiencing severe symptoms, call emergency services immediately.

What is valnigo-chrono 500mg tablet used for?

This medicine is a controlled-release tablet combining sodium valproate and valproic acid, used to treat epilepsy and bipolar disorder. It works by increasing GABA levels in the brain to reduce seizures and stabilize mood. It must be taken exactly as prescribed, with regular monitoring of liver function and blood counts.

  • Generic Name: Sodium Valproate (333mg) + Valproic Acid (145mg)
  • Manufacturer: Snig Pharmaceuticals Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 valnigo-chrono 500mg tablet के बारे में (Hindi Summary)

उपयोग: यह दवा मिर्गी (एपिलेप्सी) और बाइपोलर डिसऑर्डर के इलाज के लिए इस्तेमाल की जाती है। यह दौरे को नियंत्रित करने और मूड को स्थिर करने में मदद करती है। यह मस्तिष्क में GABA नामक रसायन के स्तर को बढ़ाकर काम करती है, जिससे मस्तिष्क की अत्यधिक विद्युत गतिविधि कम होती है। यह दवा डॉक्टर के परामर्श के बिना नहीं लेनी चाहिए और इसे अचानक बंद नहीं करना चाहिए।

साइड इफेक्ट्स: आम दुष्प्रभावों में मतली, उल्टी, पेट दर्द, दस्त, भूख न लगना, वजन बढ़ना, बाल झड़ना, कंपन, चक्कर आना और नींद आना शामिल हैं। गंभीर दुष्प्रभावों में लीवर की क्षति, अग्न्याशय की सूजन, प्लेटलेट्स की कमी और अमोनिया का स्तर बढ़ना शामिल है। अगर आपको पीलिया, गंभीर पेट दर्द, असामान्य रक्तस्राव या त्वचा पर दाने जैसे लक्षण दिखें तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को डॉक्टर के बताए अनुसार ही लें। गोली को चबाएं या तोड़ें नहीं, पूरा निगल लें। इसे भोजन के साथ लें ताकि पेट की परेशानी कम हो। शराब का सेवन न करें। अगर आप गर्भवती हैं या गर्भधारण की योजना बना रही हैं तो डॉक्टर को बताएं। नियमित रूप से लीवर फंक्शन और ब्लड टेस्ट कराते रहें। दवा अचानक बंद न करें।

💡 Did You Know? The Indian pharmaceutical market is expected to reach $130 billion by 2030.

💊 valnigo-chrono 500mg tablet Uses & Benefits

[{"condition":"Epilepsy (generalized tonic-clonic seizures)","description":"This medicine is used to control generalized tonic-clonic seizures in adults and children.","evidence":"Well-established"},{"condition":"Epilepsy (absence seizures)","description":"It is effective in reducing the frequency of absence seizures.","evidence":"Well-established"},{"condition":"Epilepsy (myoclonic seizures)","description":"It helps control myoclonic seizures, especially in juvenile myoclonic epilepsy.","evidence":"Well-established"},{"condition":"Bipolar disorder (manic episodes)","description":"Used to treat acute manic episodes and for maintenance therapy to prevent mood swings.","evidence":"Well-established"},{"condition":"Migraine prophylaxis","description":"Sometimes prescribed to prevent migraines, though this is an off-label use.","evidence":"Limited"}]

Off-label uses: [{"condition":"Migraine prophylaxis","description":"This medicine may be prescribed off-label to reduce the frequency of migraines.","evidence":"Limited"},{"condition":"Neuropathic pain","description":"Occasionally used off-label for certain types of neuropathic pain.","evidence":"Limited"}]

Primary treatment for: Epilepsy

Also treats: Bipolar disorder, Migraine prophylaxis

📋 Drug Information

Generic Name(s)Sodium Valproate (333mg) + Valproic Acid (145mg)
Brand Namevalnigo-chrono 500mg tablet
ManufacturerSnig Pharmaceuticals Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassNEURO CNS
Action Class
Route of AdministrationOral
StorageStore at room temperature between 15°C and 30°C (59°F to 86°F). Protect from moisture and light. Keep in the original container.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Always take this medicine with food to minimize stomach upset.
2
Do not crush, chew, or break the controlled-release tablet; swallow it whole.
3
Maintain a consistent schedule for taking this medicine to keep blood levels stable.
4
Regular blood tests for liver function, blood counts, and valproate levels are essential.
5
Use effective contraception if you are a woman of childbearing age.
6
Avoid alcohol completely while on this medicine.
7
Do not stop this medicine abruptly; consult your doctor first.
8
Report any unusual bleeding, bruising, or mood changes immediately.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Seizures
This medicine is commonly prescribed for epilepsy.
Likely Use
Mood swings
This medicine is used for bipolar disorder.
Likely Use
Fever
This medicine is not a primary fever reducer.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionThis medicine is absorbed from the gastrointestinal tract. The controlled-release formulation is designed to release the active ingredient slowly, which helps maintain more stable blood levels compared to immediate-release formulations. Food may affect the rate but not the extent of absorption.
DistributionValproate is widely distributed throughout the body, including the brain. It crosses the placenta and is excreted in breast milk. The volume of distribution is approximately 0.1 to 0.4 L/kg.
Protein BindingValproate is highly protein-bound, approximately 90-95% bound to plasma proteins, primarily albumin. Protein binding can be reduced in conditions such as liver disease, kidney disease, or when used with other highly protein-bound drugs.
MetabolismValproate is extensively metabolized in the liver, primarily through glucuronidation and beta-oxidation. Some metabolites may have anticonvulsant activity. The metabolism can be saturated at higher doses, leading to non-linear pharmacokinetics.
Half-LifeThe elimination half-life of valproate is typically 9 to 16 hours in adults. In children, it may be shorter, and in the elderly or those with liver disease, it may be prolonged.
ExcretionValproate is primarily excreted in the urine as glucuronide conjugates and other metabolites. A small amount is excreted unchanged in the urine and feces.
BioavailabilityThe bioavailability of valproate from this controlled-release formulation is high, approximately 80-100%. The controlled-release design may slightly reduce the peak concentration compared to immediate-release forms.
Onset of ActionThe onset of action for seizure control is not immediate; it may take several days to weeks to achieve full therapeutic effect. For acute mania, effects may be seen within a few days.
Peak Plasma TimeThe peak plasma concentration for this controlled-release formulation is typically reached 3 to 8 hours after oral administration, which is slower than immediate-release formulations.
Duration of ActionThe duration of action is approximately 12 to 24 hours, allowing for once or twice daily dosing. Steady-state levels are usually achieved within 3 to 4 days.

How It Works

This medicine works by increasing the levels of gamma-aminobutyric acid (GABA) in the brain. GABA is an inhibitory neurotransmitter that reduces excessive electrical activity in the brain. Valproate achieves this by inhibiting the enzymes that break down GABA and by enhancing GABA synthesis. Additionally, it blocks voltage-gated sodium channels, which further stabilizes neuronal membranes and prevents the spread of seizure activity. In bipolar disorder, the mood-stabilizing effects are thought to be related to these same mechanisms, helping to regulate neuronal excitability.

Mechanism Steps

1
Inhibition of GABA transaminase: This medicine inhibits the enzyme GABA transaminase, which is responsible for breaking down GABA, thereby increasing GABA levels in the brain.
2
Enhancement of GABA synthesis: It also promotes the synthesis of GABA by activating glutamic acid decarboxylase, further boosting inhibitory neurotransmission.
3
Blockade of voltage-gated sodium channels: This medicine blocks voltage-gated sodium channels, which reduces the ability of neurons to fire at high frequencies, limiting the spread of seizure activity.
4
Modulation of other neurotransmitter systems: It may also affect dopamine and serotonin systems, contributing to its mood-stabilizing properties.

💡 How to Take valnigo-chrono 500mg tablet

Strength: Controlled-release tablet containing Sodium Valproate 333 mg and Valproic Acid 145 mg.

1Swallow the tablet whole with a glass of water. Do not crush, chew, or break the tablet.
2Take this medicine with food to reduce stomach upset.
3Take it at the same time(s) each day to maintain steady blood levels.
4If you are taking it once daily, take it in the evening to reduce daytime drowsiness.
5Do not stop taking this medicine suddenly without consulting your doctor.

Dosage Information

Adult DosageThe dose of this medicine must be individualized by a qualified clinician based on the indication, age, weight, renal and hepatic function, and response to treatment. For epilepsy, the usual starting dose is 10-15 mg/kg/day, increased gradually. For bipolar disorder, the starting dose is often 750 mg/day in divided doses, adjusted based on response. The controlled-release formulation is usually taken once or twice daily. Do not adjust the dose without consulting your doctor.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician for appropriate dosing.
Elderly DosageElderly patients may be more sensitive to the effects of this medicine. Doses should be started low and increased slowly, with close monitoring for side effects and drug interactions.
Renal ImpairmentValproate is primarily metabolized by the liver, so renal impairment generally does not require dose adjustment. However, caution is advised in severe renal impairment, and monitoring for toxicity is recommended.
Hepatic ImpairmentThis medicine is contraindicated in patients with active liver disease or severe hepatic impairment. In patients with mild to moderate hepatic impairment, dose reduction and close monitoring are necessary.
Maximum Daily DoseThe maximum daily dose is typically 60 mg/kg/day. However, the exact maximum dose must be determined by a qualified clinician based on individual factors.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

With food
Take with meals
Reduces stomach upset and improves tolerability.
Alcohol
Avoid
Increases risk of liver damage and drowsiness.
High-fat meals
May delay absorption
Fatty foods can slow the rate of absorption.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of valnigo-chrono 500mg tablet

✅ Common Side Effects

Nausea (Common (10-20%))
Take with food or milk to reduce nausea. If it persists, consult your doctor.
Vomiting (Common (5-10%))
Stay hydrated and inform your doctor if vomiting is severe or persistent.
Weight gain (Common (10-20%))
Monitor your weight and discuss with your doctor. Diet and exercise can help.
Hair loss (Common (5-10%))
Usually reversible. Discuss with your doctor if concerned.
Tremor (Common (5-10%))
Report to your doctor if it interferes with daily activities.
Drowsiness (Common (5-10%))
Avoid driving or operating machinery until you know how it affects you.

🚨 Serious Side Effects

Liver damage (hepatotoxicity) (Rare (<0.1%))
Seek immediate medical attention if you notice yellowing of skin or eyes, dark urine, or severe abdominal pain.
Pancreatitis (Rare (<0.1%))
Seek immediate medical attention if you experience severe abdominal pain, nausea, and vomiting.
Low platelet count (thrombocytopenia) (Uncommon (0.1-1%))
Report any unusual bleeding or bruising to your doctor immediately.
Hyperammonemia (Rare (<0.1%))
Seek medical attention if you experience confusion, lethargy, or vomiting.
Severe skin reactions (Stevens-Johnson syndrome) (Very rare (<0.01%))
Seek immediate medical attention if you develop a rash with fever, blisters, or peeling skin.

⚠️ Rare Side Effects

Aplastic anemia
Report symptoms like fatigue, pale skin, or frequent infections to your doctor.
Kidney problems (Fanconi syndrome)
Report changes in urination or swelling to your doctor.
Encephalopathy
Seek immediate medical attention if you experience confusion, seizures, or decreased consciousness.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Carbamazepine Major
Lamotrigine Major
Phenytoin Major
Warfarin Major
Aspirin Major
Rifampicin Moderate
Erythromycin Moderate
Cimetidine Moderate
Fluoxetine Moderate
Paracetamol Minor

🚨 Major Interactions

  • Carbamazepine
  • Lamotrigine
  • Phenytoin
  • Warfarin
  • Aspirin

⚡ Moderate Interactions

  • Rifampicin
  • Erythromycin
  • Cimetidine
  • Fluoxetine

🍷 Alcohol Interaction

Avoid alcohol while taking this medicine. Alcohol can increase the sedative effects of valproate and increase the risk of liver damage. It may also lower the seizure threshold, reducing the effectiveness of the medicine.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to valproate or any component of the formulation.","Active liver disease or severe liver dysfunction.","Known urea cycle disorders.","Mitochondrial disorders caused by mutations in the POLG gene.","Pregnancy for the treatment of bipolar disorder.","Pregnancy for epilepsy unless absolutely necessary and under specialist supervision."]

⚠️ Warnings & Precautions

["Hepatotoxicity: Serious liver damage can occur, especially in children under 2 and those with metabolic disorders. Monitor liver function closely.","Pancreatitis: Cases of acute pancreatitis have been reported. Discontinue if suspected.","Thrombocytopenia: Low platelet count can occur. Monitor blood counts.","Hyperammonemia: Can occur even with normal liver function. Monitor ammonia levels if symptoms occur.","Suicidal thoughts: Antiepileptic drugs, including valproate, may increase the risk of suicidal thoughts. Monitor mood changes.","Pregnancy: Valproate can cause birth defects and neurodevelopmental disorders. Use effective contraception.","Withdrawal: Do not stop abruptly as it may cause seizures.","Driving: May cause drowsiness. Avoid driving until you know how it affects you."]

🤱 Lactation Safety

Valproate is excreted in breast milk in small amounts. The amount is generally considered low, but the potential for serious adverse reactions in the nursing infant exists. Breastfeeding should be discussed with a doctor, weighing the benefits of breastfeeding against the potential risks.

💊 Overdose Management

Overdose of valproate can cause serious symptoms including coma, respiratory depression, and metabolic acidosis. There is no specific antidote. Treatment is supportive and may include activated charcoal if taken recently, hemodialysis, and management of complications. Seek immediate medical attention if overdose is suspected.

⏰ Missed Dose

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

Additional Safety Advice

General Safety

Take this medicine exactly as prescribed by your doctor. Do not crush, chew, or break the controlled-release tablet; swallow it whole with a glass of water. Take it with food to reduce stomach upset. Do not stop taking this medicine suddenly, as it can cause seizures to worsen or withdrawal symptoms. Avoid alcohol while taking this medicine, as it can increase drowsiness and the risk of liver problems. Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding. Regular blood tests to check liver function, blood counts, and valproate levels may be needed. Use effective contraception if you are a woman of childbearing age. Do not drive or operate heavy machinery until you know how this medicine affects you. Keep all appointments with your doctor and do not miss any follow-up visits.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more sensitive to the side effects of this medicine, especially drowsiness and dizziness. Doses should be started low and increased slowly. Regular monitoring of liver and kidney function is advised.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor immediately. Valproate can cause serious birth defects and should be avoided. Your doctor may switch you to a safer alternative. Use effective contraception while taking this medicine.

🏥 Post-Surgery Considerations

Inform your surgeon and anesthesiologist that you are taking this medicine. It may interact with anesthetic agents. Your doctor may adjust the dose before surgery. Do not stop the medicine without medical advice.

🦷 Dental Procedures

Inform your dentist that you are taking this medicine, as it can increase the risk of bleeding. Your dentist may take extra precautions during procedures. Maintain good oral hygiene to prevent dental problems.

💚 Lifestyle Tips for Better Results

🏃
Maintain a healthy weight through diet and exercise.
🥗
Get regular sleep and manage stress.
😴
Avoid alcohol and recreational drugs.
💧
Take calcium and vitamin D supplements if advised by your doctor.
🧘
Practice good oral hygiene to prevent dental problems.
🌞
Wear a medical alert bracelet indicating you take valproate.

🏋️ Exercise Considerations

This medicine may cause drowsiness or dizziness. Avoid activities requiring alertness, such as driving or operating machinery, until you know how it affects you. Moderate exercise is generally safe, but consult your doctor before starting any new exercise program.

🥗 Diet Recommendations

Eat a balanced diet rich in fruits and vegetables.
Include adequate protein and healthy fats.
Limit processed foods and sugary drinks.
Stay well hydrated.
Consider calcium and vitamin D supplements if advised.

💼 Impact on Daily Work & Life

This medicine can cause drowsiness, dizziness, or blurred vision, which may affect your ability to drive or operate machinery. It may also affect concentration. Discuss with your doctor if your work requires alertness. Most people can continue their normal activities with dose adjustments.

🛑 When to Stop This Medicine

Do not stop taking this medicine without consulting your doctor. Abrupt discontinuation can cause seizures to worsen or withdrawal symptoms. Your doctor will gradually reduce the dose if needed.

📅 Long-Term Use Effects

Long-term use of this medicine may require regular monitoring of liver function, blood counts, and valproate levels. It can cause weight gain, hair loss, and bone density loss. Rarely, it may lead to kidney problems. Regular follow-up with your doctor is essential to manage these risks.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Ketogenic diet

A high-fat, low-carbohydrate diet that can help control seizures in some patients, especially children.

Evidence: Well-established for certain types of epilepsy
Vagus nerve stimulation

A device implanted under the skin that sends electrical signals to the brain to reduce seizures.

Evidence: Well-established for refractory epilepsy
Cognitive behavioral therapy

Can help manage mood symptoms in bipolar disorder alongside medication.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

This medicine does not typically interact with vaccines. However, live vaccines should be avoided if you are on immunosuppressive therapy. Consult your doctor before any vaccination.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

When traveling, carry this medicine in its original packaging with a copy of your prescription. Keep it in your carry-on luggage to avoid loss. Store at room temperature and protect from extreme heat or moisture. If crossing time zones, adjust dosing times gradually in consultation with your doctor. Check customs regulations for controlled substances before traveling internationally.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 32-year-old woman with epilepsy
She was started on this medicine after experiencing generalized tonic-clonic seizures. Within a few weeks, her seizure frequency decreased significantly. She experienced mild nausea initially, which improved when she took the tablet with breakfast. She emphasizes the importance of regular blood tests and never missing a dose.
💡 Lesson: Consistent use with food and regular monitoring can lead to good seizure control with minimal side effects.
👤 A 45-year-old man with bipolar disorder
He was prescribed this medicine for manic episodes. He noticed a stabilization in his mood after about two weeks. He had some weight gain and hair thinning, but these were manageable. He advises others to be patient and communicate openly with their doctor about side effects.
💡 Lesson: Mood stabilization takes time, and side effects can often be managed with lifestyle adjustments and medical guidance.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: For seizures, it may take several days to weeks to achieve full effect. For mania, improvement may be seen within a few days.

Q: Can I stop taking this medicine if I feel better?

A: No, do not stop suddenly as it can cause seizures to worsen. Consult your doctor before making any changes.

Q: What should I do if I miss a dose?

A: Take it as soon as you remember if it's not almost time for the next dose. Otherwise, skip it and continue your regular schedule. Do not double dose.

Q: Is it safe to take during pregnancy?

A: Valproate can cause serious birth defects. It should be avoided during pregnancy unless absolutely necessary for epilepsy, under specialist care.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my liver function?
  • Can I drive after taking this medicine?
  • Does it interact with my other medicines?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?
  • Is it safe during pregnancy?
  • What are the withdrawal effects?

🔄 Substitutes for valnigo-chrono 500mg tablet

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This medicine is addictive.
    Fact: This medicine is not addictive, but it can cause dependence if stopped suddenly. It should be tapered gradually under medical supervision.
  • Myth: This medicine can be taken without food.
    Fact: It should be taken with food to reduce stomach upset and improve absorption.
  • Myth: This medicine is safe during pregnancy.
    Fact: This medicine can cause serious birth defects and should be avoided during pregnancy unless absolutely necessary for epilepsy, under specialist care.

🔄 Alternative Options

Generic Alternatives

  • Sodium valproate + valproic acid controlled-release tablets (various manufacturers)

Brand Alternatives

  • Amvalor Chrono 500 Tablet CR

📊 Comparison with Similar Medicines

[{"medicine":"This medicine","composition":"Sodium Valproate 333 mg + Valproic Acid 145 mg","release_type":"Controlled-release","frequency":"Once or twice daily"},{"medicine":"Divalproex sodium","composition":"Divalproex sodium","release_type":"Delayed-release or extended-release","frequency":"Once or twice daily"}]

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