butalbital/acetaminophen - oral, Phrenilin
GENERIC NAME: BUTALBITAL/ACETAMINOPHEN - ORAL (byou-TAL-bih-tall/uh-seet-uh-MEE-no-fen)
BRAND NAME(S): Phrenilin
USES: This combination medication is used to treat tension headaches. Acetaminophen helps to decrease the pain from the headache. Butalbital is a sedative that helps to decrease anxiety and cause sleepiness and relaxation.
HOW TO USE: Take this medication by mouth with or without food, usually every 4 hours as needed or as directed by your doctor. Do not take more than 6 tablets in a 24-hour period.The dosage is based on your medical condition and response to therapy. This medication works best if it is used as the first signs of a headache occur. If you wait until the headache has worsened, the medication may not work as well.This medication may cause withdrawal reactions, especially if it has been used regularly for a long time or in high doses. In such cases, withdrawal symptoms (such as nausea/vomiting, mental/mood changes, seizures) may occur if you suddenly stop using this medication. To prevent withdrawal reactions, your doctor may reduce your dose gradually. Consult your doctor or pharmacist for more details, and report any withdrawal reactions immediately.Though very unlikely, abnormal drug-seeking behavior (addiction) is possible with this medication. To lessen the risk of becoming addicted, do not increase your dose, take it more frequently, or take it for a longer time than prescribed. Properly stop the medication when so directed.This medication contains acetaminophen. Do not take more acetaminophen than recommended. (See also Side Effects, Drug Interactions sections.)Inform your doctor if you notice increased use of this medication, a worsening of headaches, an increase in the number of headaches, the medication not working as well, or use of this medication for more than 2 headache episodes a week. Your doctor may need to change your medication and/or add a separate medication to prevent the headaches.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Need help identifying pills and medications?
Back to Medications Index