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Quetiapine Tablets and Seconal Sodium

Determining the interaction of Quetiapine Tablets and Seconal Sodium and the possibility of their joint administration.

Check result:

Quetiapine Tablets <> Seconal Sodium

Relevance: 19.06.2022 Reviewer: Shkutko P.M., M.D., in

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:

Secobarbital may reduce the blood levels and effects of QUEtiapine. Contact your doctor if your symptoms worsen or your condition changes during treatment with these medications. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use 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: Coadministration with inducers of CYP450 3A4 may decrease the plasma concentrations of quetiapine, which is primarily metabolized by the isoenzyme. In 18 psychiatric patients receiving quetiapine 300 mg twice daily, addition of the potent CYP450 3A4 inducer carbamazepine (200 mg three times daily) decreased mean quetiapine peak plasma concentration (Cmax) and systemic exposure (AUC) by 80% and 87%, respectively, and increased oral clearance (Cl/F) by 7.5-fold compared to quetiapine administered alone. The interaction has also been reported with phenytoin, another potent CYP450 3A4 inducer. In ten subjects with various affective disorders, coadministration of quetiapine (250 mg orally three times a day) with phenytoin (100 mg orally three times a day) decreased the mean steady-state Cmax, trough plasma concentration (Cmin) and AUC of quetiapine by 66%, 89% and 80%, respectively. The mean oral clearance increased by 5.5-fold. No data are available for other, less potent CYP450 3A4 inducers.

MANAGEMENT: Pharmacologic response to quetiapine should be monitored more closely whenever a CYP450 3A4 inducer is added to or withdrawn from therapy, and the quetiapine dosage adjusted as necessary. Patients should be advised to notify their physician if their symptoms worsen or their condition changes.

References

"Quetiapine for schizophrenia." Med Lett Drugs Ther 39 (1997): 117-8
Cerner Multum, Inc. "Australian Product Information." O 0
Wong YWJ, Yeh C, Thyrum PT "The effects of concomitant phenytoin administration on the steady-state pharmacokinetics of quetiapine." J Clin Psychopharmacol 21 (2001): 89-93
"Product Information. Seroquel (quetiapine)." Zeneca Pharmaceuticals, Wilmington, DE.
Grimm SW, Richtand NM, Winter HR, Stams KR, Reele SB "Effects of cytochrome P450 3A modulators ketoconazole and carbamazepine on quetiapine pharmacokinetics." Br J Clin Pharmacol 61 (2006): 58-69

Quetiapine Tablets

Generic Name: quetiapine

Brand name: Seroquel, Seroquel XR

Synonyms: Quetiapine, QUEtiapine

What is Quetiapine Tablets?

Seconal Sodium

Generic Name: secobarbital

Brand name: Seconal Sodium, Seconal

Synonyms: n.a.

What is Seconal Sodium?

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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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