Norvir (Ritonavir Oral Solution) and Safetussin CD
Determining the interaction of Norvir (Ritonavir Oral Solution) and Safetussin CD 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:Ritonavir may increase the blood levels and effects of dextromethorphan. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Contact your doctor if your condition changes or you experience increased side effects such as difficulty breathing, dizziness, drowsiness, difficulty sleeping, or diarrhea. 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 CYP450 2D6 inhibitors may increase the plasma concentrations of dextromethorphan in patients who are extensive metabolizers of this isoenzyme (approximately 93% of Caucasians and more than 98% of Asians and individuals of African descent). The proposed mechanism is inhibition of the CYP450 2D6-mediated O-demethylation of dextromethorphan. Increased plasma concentrations increase the risk of dextromethorphan-related adverse effects (e.g., agitation, confusion, tremor, insomnia, diarrhea, and respiratory depression) and serotonin syndrome. Coadministration of dextromethorphan (60 mg orally, once) with the CYP450 2D6 inhibitor panobinostat (20 mg orally once a day on days 3, 5, and 8) in 14 patients with advanced cancer had a highly variable effect on dextromethorphan levels, increasing the peak plasma concentration (Cmax) of dextromethorphan by 20% to 200%, and total systemic exposure (AUC 0 to infinity) by 20% to 130%, compared to dextromethorphan given alone. In addition, multiple doses of the potent CYP450 2D6 inhibitor cinacalcet (50 mg daily), increased the AUC of a single 30 mg dextromethorphan dose by 11-fold in extensive metabolizers of this isoenzyme. The moderate CYP450 2D6 inhibitor asunaprevir, given at 200 mg twice daily, also increased Cmax and AUC of a single 30 mg dose of dextromethorphan by 2.7- and 3.9-fold, respectively, in 17 study subjects.
MANAGEMENT: Caution should be exercised if these drugs must be used together. Patients should be monitored for signs of dextromethorphan adverse effects (e.g., agitation, confusion, tremor, insomnia, diarrhea, and respiratory depression) and serotonin syndrome, and advised to notify their health care professional if these adverse effects develop or worsen. Dose reduction of dextromethorphan may also be required.
- Funck-Brentano C, Jacqz-Aigrain E, Leenhardt A, Roux A, Poirier JM, Jaillon P "Influence of amiodarone on genetically determined drug metabolism in humans." Clin Pharmacol Ther 50 (1991): 259-66
- "Product Information. Zytiga (abiraterone)." Centocor Inc, Malvern, PA.
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- "Product Information. Farydak (panobinostat)." Novartis Pharmaceuticals, East Hanover, NJ.
- Cerner Multum, Inc. "Australian Product Information." O 0
Generic Name: ritonavir
Brand name: Norvir, Norvir Soft Gelatin
Synonyms: Norvir
Generic Name: dextromethorphan / phenylephrine
Brand name: Children's Triacting Daytime, PediaCare Children's Multi-Symptom Cold, Safetussin CD, Sudafed PE Children's Cold & Cough, Triaminic Day Time Cold & Cough, Albatussin Pediatric, Pedia Care Multi-Symptom Cold, PediaCare Childrenâs Multi-Symptom, Sudafed PE Cold & Cough Child, Triacting Day Time Cold/Cough, Vicks Formula 44D Cough & Sinus Congestion Relief, Triaminic Daytime Cough & Cold, Triaminic Thin Strips Cough and Congestion, Triaminic Toddler Cough and Cold Thin Strips, Dimetapp Cold & Cough, Triaminic Thin Strips Infant Decongestant Plus Cough, PediaCare Infant Decongestant & Cough
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.
- Norvir (Ritonavir Oral Solution)-Safetussin DM
- Norvir (Ritonavir Oral Solution)-Safetussin PM
- Norvir (Ritonavir Oral Solution)-Safinamide
- Norvir (Ritonavir Oral Solution)-Safinamide Mesylate
- Norvir (Ritonavir Oral Solution)-Safyral
- Norvir (Ritonavir Oral Solution)-Saizen
- Safetussin CD-Norvir (Ritonavir Powder Packets)
- Safetussin CD-Norvir (Ritonavir Tablets)
- Safetussin CD-Norvir Tablets
- Safetussin CD-Norwich Aspirin
- Safetussin CD-Nostril
- Safetussin CD-Nostrilla