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ISENTRESS
Viral infections
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Drug Name:

ISENTRESS Rx

Generic Name and Formulations:
Raltegravir (as potassium) 25mg, 100mg+; chew tabs; scored (+); orange-banana flavor; contains phenylalanine; 400mg; film-coated tabs.

Company:
Merck & Co., Inc.

Therapeutic Use:

Indications for ISENTRESS:

HIV-1 infection, in combination with other antiretrovirals.

Adult:

Film-coated tabs: swallow whole.Treatment-naïve or virologically suppressed on Isentress 400mg twice daily: 1200mg (2 x 600mg) once daily or 400mg twice daily. Treatment-experienced: 400mg twice daily. Avoid dosing before dialysis sessions. Concomitant rifampin: 800mg (2 x 400mg) twice daily.

Children:

<4 weeks: not established. Film-coated tabs: swallow whole. ≥4 weeks (<25kg): use other forms; (≥25kg): 400mg twice daily; (≥40kg): treatment-naïve or virologically suppressed on Isentress 400mg twice daily: 1200mg (2 x 600mg) once daily or 400mg twice daily. If unable to swallow, can use chew tabs: (25–<28kg): 150mg twice daily; (28–<40kg): 200mg twice daily; ≥40kg: 300mg twice daily. Chew tabs max dose: 300mg twice daily. See full labeling.

Warnings/Precautions:

Chew tabs or oral susp are not interchangeable with the film-coated tabs. Monitor liver aminotransferases, myopathy, and rhabdomyolysis. Discontinue if signs/symptoms of severe skin or hypersensitivity reactions develop. Hepatic impairment: Isentress HD not recommended. Pregnancy. Nursing mothers: not recommended.

Interactions:

May be antagonized by UGT1A1 inducers (eg, rifampin; see Adult) and potentiated by UGT1A1 inhibitors. Concomitant aluminum and/or magnesium-containing antacids, other strong enzyme inducers (eg, carbamazepine, phenobarbital, phenytoin): not recommended. Caution with concomitant drugs known to cause myopathy or rhabdomyolysis (eg, statins). Isentress HD: concomitant calcium carbonate antacid, rifampin, tipranavir/ritonavir, etravirine: not recommended.

See Also:

ISENTRESS ORAL SUSPENSION

ISENTRESS HD

Pharmacological Class:

HIV-1 integrase strand transfer inhibitor (INSTI).

Adverse Reactions:

Insomnia, headache, dizziness, nausea, fatigue, creatinine kinase elevations, myopathy, rhabdomyolysis; severe skin reactions (eg, Stevens-Johnson syndrome, toxic epidermal necrolysis), hypersensitivity, immune reconstitution syndrome.

Note:

Note: Register pregnant patients exposed to raltegravir by calling (800) 258-4263.

How Supplied:

Chew tabs, film-coated tabs—60; Susp (pkts)—1, 60 (w. syringes, mixing cups)

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