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Ivacaftor and Tolazamide

Determining the interaction of Ivacaftor and Tolazamide and the possibility of their joint administration.

Check result:

Ivacaftor <> Tolazamide

Relevance: 03.11.2022 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:

Consumer information for this interaction is not currently available.MONITOR: Coadministration with ivacaftor may increase the plasma concentrations of drugs that are substrates of the CYP450 2C9 isoenzyme. The proposed mechanism, based on in vitro data, involves decreased metabolic clearance due to inhibition of CYP450 2C9 by ivacaftor. The clinical relevance is unknown. MANAGEMENT: Caution is advised when ivacaftor is used concurrently with drugs that are known CYP450 2C9 substrates, particularly those with a narrow therapeutic range. Dosage adjustments as well as clinical and laboratory monitoring may be appropriate for some drugs whenever ivacaftor is added to or withdrawn from therapy. References "Product Information. Kalydeco (ivacaftor)." Vertex Pharmaceuticals, Cambridge, MA. "Product Information. Trikafta (elexacaftor/ivacaftor/tezacaftor)." Vertex Pharmaceuticals, Cambridge, MA. "Product Information. Orkambi (ivacaftor-lumacaftor)." Vertex Pharmaceuticals, Cambridge, MA. "Product Information. Symdeko 4-Week (ivacaftor-tezacaftor)." Vertex Pharmaceuticals, Cambridge, MA. View all 4 references

Professional:

MONITOR: Coadministration with ivacaftor may increase the plasma concentrations of drugs that are substrates of the CYP450 2C9 isoenzyme. The proposed mechanism, based on in vitro data, involves decreased metabolic clearance due to inhibition of CYP450 2C9 by ivacaftor. The clinical relevance is unknown.

MANAGEMENT: Caution is advised when ivacaftor is used concurrently with drugs that are known CYP450 2C9 substrates, particularly those with a narrow therapeutic range. Dosage adjustments as well as clinical and laboratory monitoring may be appropriate for some drugs whenever ivacaftor is added to or withdrawn from therapy.

References

"Product Information. Kalydeco (ivacaftor)." Vertex Pharmaceuticals, Cambridge, MA.
"Product Information. Trikafta (elexacaftor/ivacaftor/tezacaftor)." Vertex Pharmaceuticals, Cambridge, MA.
"Product Information. Orkambi (ivacaftor-lumacaftor)." Vertex Pharmaceuticals, Cambridge, MA.
"Product Information. Symdeko 4-Week (ivacaftor-tezacaftor)." Vertex Pharmaceuticals, Cambridge, MA.

Ivacaftor

Generic Name: ivacaftor

Brand name: Kalydeco

Synonyms: n.a.

What is Ivacaftor?

Tolazamide

Generic Name: tolazamide

Brand name: Tolinase

Synonyms: TOLAZamide

What is Tolazamide?

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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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