Kaletra Oral Solution and Temsirolimus

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.

Talk to your doctor before using temsirolimus together with ritonavir. Combining these medications may significantly increase the blood levels and effects of temsirolimus. 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.

GENERALLY AVOID: Coadministration of temsirolimus with potent inhibitors of CYP450 3A4 may significantly increase the plasma concentrations of sirolimus, a major active metabolite of temsirolimus and known substrate of CYP450 3A4. According to the product labeling, administration of temsirolimus in combination with the CYP450 3A4 inhibitor ketoconazole resulted in a 2.2-fold and 3.1-fold increase in sirolimus peak plasma concentration (Cmax) and systemic exposure (AUC), respectively, compared to administration of temsirolimus alone. No significant effect on the pharmacokinetics of temsirolimus was reported.

MANAGEMENT: Concomitant use of temsirolimus with potent CYP450 3A4 inhibitors should generally be avoided. If coadministration is required, the manufacturer recommends reducing the temsirolimus dosage to 12.5 mg once a week. Based on pharmacokinetic studies, this dosage is predicted to adjust the sirolimus systemic exposure (AUC) to the range observed without inhibitors. However, clinical data are lacking. Following discontinuation of the potent CYP450 3A4 inhibitor, a washout period of approximately one week should be allowed before the temsirolimus dosage is adjusted upward to the normally recommended dosage (i.e., 25 mg once a week) or the dosage used prior to initiation of the CYP450 3A4 inhibitor.

Kaletra Oral Solution

Generic Name: lopinavir / ritonavir

Brand name: Kaletra

Synonyms: Kaletra

What is Kaletra Oral Solution?

Temsirolimus

Generic Name: temsirolimus

Brand name: Torisel

Synonyms: n.a.

What is Temsirolimus?