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Phenobarbital Patient Information including If I Miss a Dose
In this Article
- What is phenobarbital (Phenobarbital)?
- What are the possible side effects of phenobarbital (Phenobarbital)?
- What is the most important information I should know about phenobarbital (Phenobarbital)?
- What should I discuss with my healthcare provider before taking phenobarbital (Phenobarbital)?
- How should I take phenobarbital (Phenobarbital)?
- What happens if I miss a dose (Phenobarbital)?
- What happens if I overdose (Phenobarbital)?
- What should I avoid while taking phenobarbital (Phenobarbital)?
- What other drugs will affect phenobarbital (Phenobarbital)?
- Where can I get more information?
What happens if I miss a dose (Phenobarbital)?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose (Phenobarbital)?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of phenobarbital can be fatal.
Overdose symptoms may include slow or shallow breathing, blurred vision, extreme drowsiness, urinating less than usual or not at all, feeling light-headed, or fainting.
What should I avoid while taking phenobarbital (Phenobarbital)?
This medication may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.
Drinking alcohol can increase some of the side effects of phenobarbital.
What other drugs will affect phenobarbital (Phenobarbital)?
Before using phenobarbital, tell your doctor if you regularly use other medicines that make you sleepy (such as other sleeping pills or seizure medicines, cold or allergy medicine, narcotic pain medicine, muscle relaxers, and medicine for depression or anxiety). They can add to sleepiness caused by phenobarbital.
Tell your doctor about all other medicines you use, especially:
- a blood thinner such as warfarin (Coumadin, Jantoven);
- doxycycline (Doryx, Oracea, Periostat, Vibramycin);
- other seizure medications such as divalproex (Depakote), phenytoin (Dilantin), or valproic acid (Depakene);
- an MAO inhibitor such as furazolidone (Furoxone), isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate);
- griseofulvin (Grisactin, Fulvicin PG, Grifulvin V);
- birth control pills or estrogen hormone replacement, including estrogen (Premarin), estradiol (Estrace, Femtrace, and others), progesterone (Progest, Prometrium), and others; or
- steroids such as prednisone, dexamethasone (Decadron, Hexadrol) fluticasone (Flonase, Advair), methylprednisolone (Medrol), mometasone (Asmanex, Nasonex), and others.
This list is not complete and other drugs may interact with phenobarbital. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.
Where can I get more information?
Your pharmacist can provide more information about phenobarbital.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.
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