Butalbital and Acetaminophen and Lopressor (Metoprolol Injection)
Determining the interaction of Butalbital and Acetaminophen and Lopressor (Metoprolol Injection) and the possibility of their joint administration.
In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.
Consumer:Using acetaminophen together with butalbital may alter the effects of acetaminophen and cause serious side effects that may affect your liver. Call your doctor immediately if you experience a fever, chills, joint pain or swelling, excessive tiredness or weakness, unusual bleeding or bruising, skin rash or itching, loss of appetite, nausea, vomiting, or yellowing of the skin or the whites of your eyes. If your doctor does prescribe these medications together, you may need a dose adjustment or special tests to safely take both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Professional:MONITOR: Barbiturates may increase the hepatotoxic potential of acetaminophen and decrease its therapeutic effects. The mechanism may be related to accelerated CYP450 metabolism of acetaminophen with consequent increase in hepatotoxic metabolites. This interaction is of greatest concern in cases of acetaminophen overdose.
MANAGEMENT: Monitoring for altered efficacy and safety is recommended. Prolonged use or high doses of acetaminophen should be avoided by patients on barbiturate therapy.
- Wright N, Prescott LF "Potentiation by previous drug therapy of hepatotoxicity following paracetamol overdose." Scott Med J 18 (1973): 56-8
- Bock KW, Wiltfang J, Blume R, Ullrich D, Bircher J "Paracetamol as a test drug to determine glucuronide formation in man: effects of inducers and of smoking." Eur J Clin Pharmacol 31 (1987): 677-83
- Pirotte JH "Apparent potentiation by phenobarbital of hepatotoxicity from small doses of acetaminophen." Ann Intern Med 101 (1984): 403
- Douidar SM, Ahmed AE "A novel mechanism for the enhancement of acetaminophen hepatotoxicity by phenobarbital." J Pharmacol Exp Ther 240 (1987): 578-83
Generic Name: acetaminophen / butalbital
Brand name: Allzital, Bupap, Phrenilin, Triaprin, Phrenilin Forte, Bucet, Axocet, Sedapap, Dolgic, Marten-Tab, Tencon, Prominol, Cephadyn, Butex Forte, Promacet, Orbivan CF
Synonyms: Acetaminophen and butalbital
Generic Name: metoprolol
Brand name: Lopressor, Kapspargo Sprinkle, Toprol-XL, Toprol XL
Synonyms: Lopressor (Injection), Lopressor
In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.
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