Butalbital/acetaminophen (By mouth)
Acetaminophen (a-seet-a-MIN-oh-fen), Butalbital (bue-TAL-bi-tal)
Treats the symptoms of tension headache. This medicine contains a barbiturate.
Bupap, Cephadyn, Marten-Tab, Phrenilin, Phrenilin Forte, TenconThere may be other brand names for this medicine.
When This Medicine Should Not Be Used:This medicine is not right for everyone. Do not use it if you had an allergic reaction to butalbital or acetaminophen, or if you have porphyria.
How to Use This Medicine:
- Take your medicine as directed.
- This medicine is not for long-term use.
- If this medicine upsets your stomach, you may take it with food or milk.
- Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.
- Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.
Drugs and Foods to Avoid:
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
- Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.
Warnings While Using This Medicine:
- Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, or a stomach disorder.
- This medicine may make you dizzy or drowsy. Do not drive or do anything that could be dangerous until you know how this medicine affects you.
- This medicine can be habit-forming. Do not use more than your prescribed dose. Call your doctor if you think your medicine is not working.
- Do not stop using this medicine suddenly. Your doctor will need to slowly decrease your dose before you stop it completely.
- This medicine contains acetaminophen. Read the labels of all other medicines you are using to see if they also contain acetaminophen, or ask your doctor or pharmacist. Do not use more than 4 grams (4,000 milligrams) total of acetaminophen in one day.
- Do not drink alcohol while you are using this medicine. Acetaminophen can damage your liver, and alcohol can increase this risk. Do not take acetaminophen without asking your doctor if you have 3 or more drinks of alcohol every day.
- Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.
- Keep all medicine out of the reach of children. Never share your medicine with anyone.
Possible Side Effects While Using This Medicine:
Call your doctor right away if you notice any of these side effects:
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
- Blistering, peeling, red skin rash
- Dark urine or pale stools
- Fast heartbeat
- Increase in how much or how often you urinate
- Nausea, vomiting, sweating, weakness
- Numbness in any part of your body
- Severe drowsiness, confusion, shallow breathing, fainting
- Trouble swallowing
- Unusual bleeding or bruising
- Yellow skin or eyes
If you notice these less serious side effects, talk with your doctor:
- Dry mouth, heartburn, mild nausea, vomiting, constipation, stomach pain
- Feeling like you are drunk
- Muscle pain or weakness
- Ringing in your ears
- Unusual sleepiness
If you notice other side effects that you think are caused by this medicine, tell your doctor
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088
Last Updated: 11/4/2014
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