Divalproex sodium, valproate sodium, and valproic acid, are all similar medications that are used by the body as valproic acid. Therefore, the termvalproic acid will be used to represent all of these medications in this discussion.
Valproic acid may cause serious or life-threatening damage to the liver that is most likely to occur within the first 6 months of therapy. The risk of developing liver damage is greater in children who are younger than 2 years of age and are also taking more than one medication to prevent seizures, have certain inherited diseases that may prevent the body from changing food to energy normally, or any condition that affects the ability to think, learn, and understand. Tell your doctor if you have a certain inherited condition that affects the brain, muscles, nerves, and liver (Alpers Huttenlocher Syndrome), urea cycle disorder (an inherited condition that affects the ability to metabolize protein), or liver disease. Your doctor will probably tell you not to take valproic acid. If you notice that your seizures are more severe or happen more often or if you experience any of the following symptoms, call your doctor immediately: excessive tiredness, lack of energy, weakness, pain on the right side of your stomach, loss of appetite, nausea, vomiting,, dark urine, yellowing of your skin or the whites of your eyes, or swelling of the face.
Valproic acid can cause serious birth defects (physical problems that are present at birth), especially affecting the brain and spinal cord and can also cause lower intelligence and problems with movement and coordination, learning, communication, emotions, and behavior in babies exposed to valproic acid before birth. Tell your doctor if you are pregnant or plan to become pregnant. Women who are pregnant or who are able to become pregnant and are not using effective birth control must not take valproic acid to prevent migraine headaches. Women who are pregnant should only take valproic acid to treat seizures or bipolar disorder (manic-depressive disorder; a disease that causes episodes of depression, episodes of mania, and other abnormal moods) if other medications have not successfully controlled their symptoms or cannot be used. Talk to your doctor about the risks of using valproic acid during pregnancy. If you are a woman of childbearing age, including girls from the start of puberty, talk to your doctor about using other possible treatments instead of valproic acid. If the decision is made to use valproic acid, you must use effective birth control during your treatment. Talk to your doctor about birth control methods that will work for you. If you become pregnant while taking valproic acid, call your doctor immediately. Valproic acid can harm the fetus.
Valproic acid may cause serious or life-threatening damage to the pancreas. This may occur at any time during your treatment. If you experience any of the following symptoms, call your doctor immediately: ongoing pain that begins in the stomach area but may spread to the back nausea, vomiting, or loss of appetite.
Keep all appointments with your doctor and the laboratory. Your doctor will order certain lab tests to check your response to valproic acid.
Talk to your doctor about the risks of taking valproic acid or of giving valproic acid to your child.
Your doctor or pharmacist will give you the manufacturer's patient information sheet (Medication Guide) when you begin treatment with valproic acid and each time you refill your prescription. Read the information carefully and ask your doctor or pharmacist if you have any questions. You can also visit the Food and Drug Administration (FDA) website ( Web Site) or the manufacturer's website to obtain the Medication Guide.
Valproic acid is used alone or with other medications to treat certain types of seizures. Valproic acid is also used to treat mania (episodes of frenzied, abnormally excited mood) in people with bipolar disorder (manic-depressive disorder; a disease that causes episodes of depression, episodes of mania, and other abnormal moods). It is also used to prevent migraine headaches but not to relieve headaches that have already begun. Valproic acid is in a class of medications called anticonvulsants. It works by increasing the amount of a certain natural substance in the brain.
Valproic acid comes as a capsule, an extended-release (long-acting) tablet, a delayed-release (releases the medication in the intestine to prevent damage to the stomach) tablet, a sprinkle capsule (capsule that contains small beads of medication that can be sprinkled on food), and a syrup (liquid) to take by mouth. The syrup, capsules, delayed-release tablets, and sprinkle capsules are usually taken two or more times daily. The extended-release tablets are usually taken once a day. Take valproic acid at around the same time(s) every day. Take valproic acid with food to help prevent the medication from upsetting your stomach. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take valproic acid exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Swallow the regular capsules, delayed-release capsule, and extended-release tablets whole; do not split, chew, or crush them.
You can swallow the sprinkle capsules whole, or you can open the capsules and sprinkle the beads they contain on a teaspoonful of soft food, such as applesauce or pudding. Swallow the mixture of food and medication beads right after you prepare it. Be careful not to chew the beads. Do not store unused mixtures of food and medication.
Do not mix the syrup into any carbonated drink.
Divalproex sodium, valproate sodium, and valproic acid products are absorbed by the body in different ways and cannot be substituted for one another. If you need to switch from one product to another, your doctor may need to adjust your dose. Each time you receive your medication, check to be sure that you have received the product that was prescribed for you. Ask your pharmacist if you are not sure that you received the right medication.
Your doctor may start you on a low dose of valproic acid and gradually increase your dose.
Valproic acid may help to control your condition but will not cure it. Continue to take valproic acid even if you feel well. Do not stop taking valproic acid without talking to your doctor, even if you experience side effects such as unusual changes in behavior or mood or if you find out that you are pregnant. If you suddenly stop taking valproic acid, you may experience a severe, long-lasting and possibly life-threatening seizure. Your doctor will probably decrease your dose gradually.
Valproic acid is also sometimes used to treat outbursts of aggression in children with attention deficit hyperactivity disorder (ADHD; more difficulty focusing or remaining still or quiet than other people who are the same age). Talk to your doctor about the possible risks of using this medication for your condition.
This medication is sometimes prescribed for other uses. Ask your doctor or pharmacist for more information.
Before taking valproic acid,
Unless your doctor tells you otherwise, continue your normal diet.
Take the missed dose as soon as you remember it. However, if it is almost time for your next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
Valproic acid may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
Some side effects can be serious. If you experience any of the following symptoms or those listed in the IMPORTANT WARNING or SPECIAL PRECAUTIONS section, call your doctor immediately:
Valproic acid may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online ( Web Site) or by phone (1-800-332-1088).
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature, away from excess heat and moisture (not in the bathroom).
Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA's Safe Disposal of Medicines website ( Web Site) for more information if you do not have access to a take-back program.
It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. Web Site
In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at Web Site. If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at 911.
Symptoms of overdose may include the following:
If you are taking the sprinkle capsules, you may notice the medication beads in your stool. This is normal and does not mean that you did not get the full dose of medication.
If you have diabetes and your doctor has told you to test your urine for ketones, tell the doctor that you are taking valproic acid. Valproic acid can cause false results on urine tests for ketones.
Before having any laboratory test, tell your doctor and the laboratory personnel that you are taking valproic acid.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.