Source: European Medicines Agency (EU) Revision Year: 2019 Publisher: ViiV Healthcare BV, Huis ter Heideweg 62, 3705 LZ Zeist, Netherlands
Telzir in combination with low dose ritonavir is indicated for the treatment of Human Immunodeficiency Virus Type 1 (HIV-1) infected adults, adolescents and children of 6 years and above in combination with other antiretroviral medicinal products.
In moderately antiretroviral experienced adults, Telzir in combination with low dose ritonavir has not been shown to be as effective as lopinavir/ritonavir. No comparative studies have been undertaken in children or adolescents.
In heavily pretreated patients the use of Telzir in combination with low dose ritonavir has not been sufficiently studied.
In protease inhibitor (PI) experienced patients the choice of Telzir should be based on individual viral resistance testing and treatment history (see section 5.1).
Telzir must only be given with low dose ritonavir as a pharmacokinetic enhancer of amprenavir and in combination with other antiretroviral medicinal products. The Summary of Product Characteristics of ritonavir must therefore be consulted prior to initiation of therapy with Telzir.
Therapy should be initiated by a physician experienced in the management of HIV infection.
Fosamprenavir is a pro-drug of amprenavir and must not be administered concomitantly with other medicinal products containing amprenavir.
The importance of complying with the full recommended dosing regimen should be stressed to all patients.
Caution is advised if the recommended doses of Telzir with ritonavir detailed below are exceeded (see section 4.4).
Telzir must only be given with low dose ritonavir as a pharmacokinetic enhancer of amprenavir and in combination with other antiretroviral medicinal products. The Summary of Product Characteristics of ritonavir must therefore be consulted prior to initiation of therapy with Telzir.
Telzir tablet is administered orally.
Telzir tablet can be taken with or without food.
Telzir is also available as an oral suspension for use in patients unable to swallow tablets, and in paediatric patients less than 39 kg (please refer to the Summary of Product Characteristics for Telzir oral suspension).
The recommended dose is 700 mg fosamprenavir twice daily with 100 mg ritonavir twice daily.
The adult dose of Telzir tablet 700 mg twice daily with ritonavir 100 mg twice daily may be used in children weighing at least 39 kg and able to swallow tablets. For children weighing less than 39 kg, Telzir oral suspension is the recommended option for the most accurate dosing in children based on body weight (please refer to the Summary of Product Characteristics for Telzir oral suspension).
Telzir with ritonavir is not recommended in children below 6 years due to insufficient data on pharmacokinetics, safety and antiviral response (see section 5.2).
The pharmacokinetics of fosamprenavir have not been studied in this patient population (see section 5.2). Therefore, no recommendations can be made in this patient population.
No dose adjustment is considered necessary in patients with renal impairment (see section 5.2).
For adults with mild hepatic impairment (Child-Pugh score: 5-6) the recommended dose is 700 mg fosamprenavir twice daily with 100 mg ritonavir once daily.
For adults with moderate hepatic impairment (Child-Pugh score: 7-9) the recommended dose is 450 mg fosamprenavir twice daily with 100 mg ritonavir once daily. This adjusted dose has not been evaluated in a clinical study and has been derived from extrapolation (see section 5.2). As it is not possible to achieve this fosamprenavir dose using the tablet formulation, these patients should be treated with fosamprenavir oral suspension.
For adults with severe hepatic impairment (Child-Pugh score: 10-15): fosamprenavir should be used with caution and at a reduced dose of 300 mg fosamprenavir twice daily with 100 mg ritonavir once daily. As it is not possible to achieve this fosamprenavir dose using the tablet formulation, these patients should be treated with fosamprenavir oral suspension.
Overall, even with these dose adjustments for adults with hepatic impairment, some patients may have higher or lower than anticipated amprenavir and/or ritonavir plasma concentrations as compared to patients with normal hepatic function, due to increased inter-patient variability (see section 5.2), therefore close monitoring of safety and virologic response is warranted.
No dose recommendation can be made for children and adolescents with hepatic impairment as no studies have been conducted in these age groups.
There is no known antidote for Telzir. It is not known whether amprenavir can be removed by peritoneal dialysis or haemodialysis. If overdose occurs, the patient should be monitored for evidence of toxicity (see section 4.8) and standard supportive treatment applied as necessary.
Shelf life: 3 years.
This medicinal product does not require any special storage conditions.
HDPE bottles with a child resistant polypropylene closure containing 60 tablets.
Any unused medicinal product should be disposed of in accordance with local requirements.
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