- It is used to help control certain kinds of seizures.
- It is used to treat anxiety.
- It is used to treat sleep problems.
- It may be given to you for other reasons. Talk with the doctor.
- If you have an allergy to phenobarbital or any other part of this drug.
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you have any of these health problems: A block in the airway, liver disease, or shortness of breath.
- If you or a family member have ever had porphyria.
- Tell all of your health care providers that you take this drug. This includes your doctors, nurses, pharmacists, and dentists.
- This drug may be habit-forming with long-term use.
- Do not stop taking this drug all of a sudden without calling your doctor. You may have a greater risk of signs of withdrawal. If you need to stop this drug, you will want to slowly stop it as ordered by your doctor.
- Have blood work checked as you have been told by the doctor. Talk with the doctor.
- Avoid driving and doing other tasks or actions that call for you to be alert or have clear eyesight until you see how this drug affects you.
- Avoid drinking alcohol while taking this drug.
- Talk with your doctor before you use other drugs and natural products that slow your actions.
- If you are 65 or older, use this drug with care. You could have more side effects.
- Birth control pills and other hormone-based birth control may not work as well to prevent pregnancy. Use 2 kinds of birth control while taking this drug.
- This drug may cause harm to the unborn baby if you take it while you are pregnant. If you are pregnant or you get pregnant while taking this drug, call your doctor right away.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
- Do not give this drug to a newborn. It has benzyl alcohol.
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Shortness of breath.
- Trouble breathing, slow breathing, or shallow breathing.
- Very bad dizziness or passing out.
- Slow heartbeat.
- Change in balance.
- Feeling confused.
- Very nervous and excitable.
- Feeling very tired or weak.
- Bone pain.
- Not able to sleep.
- If seizures are worse or not the same after starting this drug.
- A very bad skin reaction (Stevens-Johnson syndrome/toxic epidermal necrolysis) may happen. It can cause very bad health problems that may not go away, and sometimes death. Get medical help right away if you have signs like red, swollen, blistered, or peeling skin (with or without fever); red or irritated eyes; or sores in your mouth, throat, nose, or eyes.
- Feeling sleepy.
- Upset stomach or throwing up.
- Feeling tired or weak.
- Irritation where the shot is given.
All oral products:
- Take with or without food. Take with food if it causes an upset stomach.
- Measure liquid doses carefully. Use the measuring device that comes with this drug. If there is none, ask the pharmacist for a device to measure this drug.
- It is given as a shot into a muscle or vein.
All oral products:
- Take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
- Call your doctor to find out what to do.
All oral products:
- Store at room temperature.
- Store in a dry place. Do not store in a bathroom.
- Protect from light.
- If you need to store this drug at home, talk with your doctor, nurse, or pharmacist about how to store it.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else’s drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.