Nifedical XL and Norvir (Ritonavir Oral Solution)

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.

Ritonavir may increase the blood levels and effects of NIFEdipine. 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. 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.

MONITOR: Coadministration with ritonavir may increase the plasma concentrations of drugs that are substrates of the CYP450 3A4 isoenzyme. The mechanism is decreased clearance due to inhibition of CYP450 3A4 activity by ritonavir. The area under the plasma concentration-time curve (AUC) of some coadministered drugs has been reported to increase by 3-fold or more.

MANAGEMENT: Caution is advised if ritonavir must be used concurrently with medications that undergo metabolism by CYP450 3A4, particularly those with a narrow therapeutic range. Dosage adjustments as well as clinical and laboratory monitoring may be appropriate for some drugs whenever ritonavir is added to or withdrawn from therapy.

Nifedical XL

Generic Name: nifedipine

Brand name: Adalat CC, Afeditab CR, Nifediac CC, Nifedical XL, Procardia, Procardia XL, Adalat

Synonyms: Nifedical XL (Oral)

What is Nifedical XL?

Norvir (Ritonavir Oral Solution)

Generic Name: ritonavir

Brand name: Norvir, Norvir Soft Gelatin

Synonyms: Norvir

What is Norvir (Ritonavir Oral Solution)?