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Fluvoxamine ER Capsules and Trezix

Determining the interaction of Fluvoxamine ER Capsules and Trezix and the possibility of their joint administration.

Check result:
Fluvoxamine ER Capsules <> Trezix
Relevance: 28.06.2022 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:

Using caffeine together with fluvoxaMINE may increase the effects of caffeine. Contact your doctor if you experience nausea, vomiting, headache, nervousness, irritability, agitation, restlessness, insomnia, ringing in the ears, tremors, and increased heart rate . If your doctor does prescribe these medications together, you may need a dose adjustment or special test 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 fluvoxamine may increase the plasma concentrations of caffeine in a dose-dependent manner. The proposed mechanism is fluvoxamine inhibition of CYP450 1A2, the isoenzyme responsible for the metabolic clearance of caffeine. In 12 healthy volunteers, pretreatment with fluvoxamine for 7 days (10 mg once or twice a day) resulted in a 2-fold increase in the mean 24-hour area under the plasma concentration-time curve (AUC) of a single 100 mg oral dose of caffeine. When the dosage of fluvoxamine was increased (25 mg once or twice a day for 7 days), the mean 24-hour AUC of single-dose caffeine increased 5-fold. The peak plasma concentration (Cmax) of caffeine increased 40% and 141%, respectively, during these treatment phases. Another study found that fluvoxamine (50 mg daily for 4 days, then 100 mg daily for 8 days) decreased the median total clearance of a single 200 mg oral dose of caffeine by 80% and increased the half-life from 5 to 31 hours in eight healthy volunteers.

MANAGEMENT: Caution is advised if caffeine is administered concurrently with fluvoxamine. Dosage adjustment should be considered in patients who experience excessive adverse effects of caffeine such as nausea, vomiting, headache, nervousness, irritability, agitation, restlessness, insomnia, tinnitus, tremors, and tachycardia. Alternatively, use of a selective serotonin reuptake inhibitor that does not significantly affect CYP450 1A2 activity (e.g., citalopram, escitalopram, fluoxetine, paroxetine, sertraline) may be considered.

References
  • Jeppesen U, Loft S, Poulsen HE, Brosen K "A fluvoxamine-caffeine interaction study." Pharmacogenetics 6 (1996): 213-22
  • Christensen M, Tybring G, Mihara K, et al. "Low daily 10-mg and 20-mg doses of fluvoxamine inhibit the metabolism of both caffeine (cytochrome P4501A2) and omeprazole (cytochrome P4502C19)." Clin Pharmacol Ther 71 (2002): 141-52
  • Brosen K, Skjelbo E, Rasmussen BB, Poulsen HE, Loft S "Fluvoxamine is a potent inhibitor of cytochrome P4501A2." Biochem Pharmacol 45 (1993): 1211-4
Fluvoxamine ER Capsules

Generic Name: fluvoxamine

Brand name: Luvox, Luvox CR

Synonyms: Fluvoxamine

Trezix

Generic Name: acetaminophen / caffeine / dihydrocodeine

Brand name: Dvorah, Panlor Tablet, Trezix, Panlor DC, Panlor SS, Zerlor

Synonyms: n.a.

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.

Interaction with food and lifestyle
Disease interaction