• Basic Info
• Top Questions

What is this medicine?
METHOHEXITAL (meth oh HEK si tal) is an anesthetic. It is used to cause relaxation and sleep before or during surgery. It does not relieve pain.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

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What side effects may I notice from receiving this medicine?
Side effects that you should report to your doctor or health care professional as soon as possible:

• allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
• breathing problems
• fast, irregular heartbeat
• feeling faint or lightheaded, falls
• low blood pressure
• muscle twitch
• numbness or tingling in the hands or feet
• pain at site where injected
• seizures

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

• anxietyor confusion
• coughing
• headache
• hiccups
• nausea, vomiting

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How should I use this medicine?
This medicine is for infusion into a vein or injection into a muscle. This medicine can be diluted and prepared as an enema to be given rectally. It is given by a health care professional in a hospital or clinic setting.

Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 1 month old for selected conditions, precautions do apply.

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What if I miss a dose?
This does not apply.

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What may interact with this medicine?
Do not take this medicine with any of the following medications:

• MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
• St. John's wort
• voriconazole

This medicine may also interact with the following medications:

• alcohol
• ethyl alcohol
• levodopa
• medicines for seizures like phenobarbital
• medicines for sleep
• medicines that treat or prevent blood clots like warfarin, enoxaparin, and dalteparin
• narcotic medicines for pain
• propylene glycol
• steroid medicines like prednisone or cortisone

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What should I watch for while using this medicine?
Your condition will be monitored carefully while you are receiving this medicine.

You may get drowsy or dizzy. Do not drive for at least 8 to 12 hours after you are treated with this medicine. Do not use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

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What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:

• heart disease
• liver disease
• porphyria
• seizures
• an unusual or allergic reaction to methohexital, other barbiturates, other medicines, foods, dyes, or preservatives
• pregnant or trying to get pregnant
• breast-feeding

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Can I stop taking the medication if I feel better?
As a general rule, you should always take your medications exactly as prescribed and do not change the dosage or stop taking the medication without first discussing it with your healthcare provider.

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I am on so many medications; do I have to take them all?
This is called polypharmacy—many different medications being used at the same time by one person. Sometimes, being on multiple medications is acceptable and appropriate but at other times it may be problematic. If you are receiving your medications from multiple physicians you need to ensure that they all know what medications you are taking. The best way to do this is to make a list of all the medications you are currently using, including all nutritional supplements, homeopathic remedies, vitamins and over-the-counter drugs (if possible, also include all the diseases you have been diagnosed with). Give a copy to every doctor who takes care of you so they have it on file, this way they can avoid duplicating medications and perhaps even try to consolidate some. After every doctor's visit remember to update the list accordingly. Also, as much as you possibly can, try to use the same pharmacy to fill all your prescriptions, this way any potential drug interactions can be caught and averted.

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