Valex Er
Valex Er Uses, Dosage, Side Effects, Food Interaction and all others data.
Valex Er shows antiepileptic properties in various types of seizures. The exact mechanism of Valex Er is not yet established. However it is suggested that its activity is related to increased brain levels of Gama Amino Butyric Acid (GABA).
| Trade Name | Valex Er |
| Generic | Sodium Valproate |
| Weight | 250mg |
| Type | Tablet |
| Therapeutic Class | Primary anti-epileptic drugs |
| Manufacturer | Sigmund Promedica |
| Available Country | India |
| Last Updated: | September 19, 2023 at 7:00 am |
Uses
Valex Er is used for -
- Epilepsy: All types of epilepsy such as Absence seizure, Myoclonic seizure, Tonic-clonic seizure, Atonic, Mixed, simple or generalized, Secondary generalized seizure etc.
- Mania: For the treatment of manic episodes of bipolar disorders.
- Other: As an alternative treatment for febrile convulsion & migraine prophylaxis.
Dosage
Valex Er dosage
Oral:
Adults:
- Initial: 600 mg/day in 2 divided doses, preferably after food. Dose may be increased by 200mg/day at 3 days interval to a maximum of 2.5 gm daily in divided doses until control of seizure is achieved.
- Maintenance dose: Usually 1-2 gm daily (20-30 mg/kg daily).
Children (up to 20 kg):
- Initial: 20 mg/kg daily in divided doses. Dose may be increased in severe cases with proper monitoring of plasma concentration.
Children (over 20 kg):
- Initial: 400 mg/ day (irrespective of weight). Dose may be increased by 20-30 mg/ kg if required to achieve control.
Injection:
Valex Er is for intravenous use only. Use of Valex Er for periods of more than 14 days has not been studied. Patients should be switched to oral valproate products as soon as it is clinically feasible.
Valex Er should be administered as a 60 minute infusion (but not more than 20 mg/min) with the same frequency as the oral products, although plasma concentration monitoring and dosage adjustments may be necessary.
In one clinical safety study, approximately 90 patients withepilepsyand with no measurable plasma levels of valproate were given single infusions of Valex Er (up to 15 mg/kg and mean dose of 1184 mg) over 5-10 minutes (1.5-3.0 mg/kg/min). Patients generally tolerated the more rapid infusions well. This study was not designed to assess the effectiveness of these regimens.
Side Effects
Gastric irritation, nausea, ataxia & tremor; hyperammonaemia, increased appetite & weight gain; transient hair loss, oedema, thrombocytopenia, and inhibition of platelet aggregation, impaired hepatic function leading rarely to fetal hepatic failure; rashes; sedation; rarely lethargy and confusion and also increased alertness; rarely pancreatitis, leucopenia, pancytopenia, red cell hypoplasia, fibrinogen reduction; irregular periods, amenorrhoea, gynaecomastia, toxic epidermal necrolysis, hearing loss, Fancoli's syndrome, dementia, Steven's-Johnson syndrome, and vasculitis have also been reported.
Precaution
Liver function should be monitored before therapy and during first six months, especially in those patients who seem most at risk. Blood tests are recommended before surgery. Renal impaired patients, pregnant and brest feeding mother should be specially cared. Valproate is eliminated mainly through the kidney, partly in the form of ketone bodies which may lead to false statement in urine ketone test. Sudden withdrawal of therapy should be avoided
Interaction
Valex Er is a non specific inhibitor of drug metabolism. Phenobarbital, Phenytoin, Warfarin, Aspirin etc. interacts with Valex Er.
Pregnancy & Breastfeeding use
Valex Er crosses the placenta in humans which may lead to neural tube defects such as anencephaly and spina bifida if exposed in the first trimester. Valex Er may excrete in breast milk. So treatment with Valex Er may cause harm to new born baby.
Contraindication
Valex Er is contra-indicated in patients with known hypersensitivity of Valex Er, personal or family history of severe active liver disease, hepatic dysfunction, porphyria and known urea cycle disorder.
Storage Condition
Syrup: Store below 30° C, protected from light.
Tablet: Store below 30° C, protected from light. Keep all medicines out of the reach of children.
Innovators Monograph
You find simplified version here Valex Er
FAQ
What is Valex Er used for?
Valex Er used to treat epilepsy and bipolar disorder. It's occasionally used to prevent migraine headaches. This medicine is only available on prescription.
How safe is Valex Er?
Many people can take Valex Er safely for many months or years. However, there are potential side effects that can happen over a long time. Long-term treatment with Valex Er can cause osteoporosis and osteopenia.
How long does it take for sodium valproate to work?
Valex Er may take several days to show an initial effect and in some cases may take from two to six weeks for maximum effect. Treatment is started with low doses and may be increased over a couple of weeks according to your child's response.
What are the common side effects of Valex Er?
The common side effects of Valex Er are include:
- stomach pain, feeling or being sick
- diarrhoea
- dry or sore mouth, or swollen gums
- shakes (tremors) in a part of your body, or unusual eye movements
- feeling tired or sleepy
- headache
- weight gain
- thinning hair, or changes to the colour or texture of your hair
- irregular or delayed periods
How to take Valex Er?
Valex Er comes as slow release (prolonged or sustained release) tablets, capsules and granules, gastro-resistant tablets, crushable tablets, and as a liquid.
Slow release medicine passes into your body gradually.
When is the best time to take Valex Er?
You can take Valex Er with or without food, but it's best to stick to the same way each time. Do not take it with food some days and without food on other days.
How often can I take Valex Er?
If you're taking Valex Er once a day, you can choose a time that suits you. Just try to keep to the same time every day.
If you're taking Valex Er twice a day, try to leave a gap of 10 to 12 hours between doses. For example you could take your first dose in the morning (between 7am and 8am) and your second dose in the evening (between 7pm and 8pm).
Is Valex Er safe during pregnancy?
Valex Er is not recommended in pregnancy, as it can cause birth defects and problems with your baby's learning and behaviour.
If there's a chance you could become pregnant while taking this medicine, your doctor will put you on Prevent, the Valex Er prevention programme.
Is Valex Er safe during breastfeeding?
If your doctor or health visitor says your baby is healthy you can take Valex Er while breastfeeding.
Valex Er passes into breast milk in small amounts but it's unlikely to harm your baby so you can continue breastfeeding if your doctor says you need to take it.
How long will I take Valex Er?
Once your condition is under control, you'll usually need to keep taking Valex Er for many years.
Is Valex Er safe to take it for a long time?
Many people can take Valex Er safely for many months or years.
However, there are potential side effects that can happen over a long time. Long-term treatment with Valex Er can cause osteoporosis and osteopenia.
What will happen when I come off Valex Er?
Do not stop taking Valex Er suddenly, unless your doctor tells you to.
You're unlikely to get any extra symptoms when you stop taking this medicine. However, if you're taking Valex Er for epilepsy, it's possible that you'll get seizures again once you stop taking it. You can prevent these withdrawal seizures by reducing your dose of Valex Er gradually.
Can I drink alcohol with Valex Er?
Drinking alcohol while taking Valex Er may make you feel sleepy or tired. It's best to stop drinking alcohol during the first few days, until you see how the medicine affects you.
Will Valex Er affect my fertility?
Valex Er can reduce fertility in both men and women. Once you stop taking this medicine, your fertility will return.In men Valex Er has been reported to cause infertility.
Will Valex Er affect my contraception?
Valex Er does not affect any type of contraception, including the combined pill and emergency contraception.If there's a chance you could become pregnant while taking Valex Er you must use contraception. Your doctor will put you on Prevent, the valproate pregnancy prevention programme.
Can I drive after taking Valex Er?
You may feel sleepy, tired or dizzy when you first start taking Valex Er. This may also happen if your dose has increased. If you're affected, do not drive or ride a bike until you feel more alert.
Can I take too much dose of Valex Er?
Taking too much Valex Er can lead to symptoms such as: feeling or being sick, headaches or feeling dizzy,muscle weakness.
What happen If I missed Valex Er?
If you've missed a dose, what you do next depends on whether you usually take your medicine once or twice a day. If you take Valex Er once a day ,take the forgotten dose as soon as you remember unless it's within a few hours of the next dose.
Who should not take Valex Er?
You should not use Valex Er if you are allergic to it.
