Javygtor Tablets Dosage

Dosage

Treatment with JAVYGTOR should be directed by physicians knowledgeable in the management of PKU.

All patients with PKU who are being treated with JAVYGTOR should also be treated with a Phe-restricted diet, including dietary protein and Phe restriction.

Starting Dosage

Pediatric Patients 1 month to 6 years: The recommended starting dose of JAVYGTOR is 10 mg/kg taken once daily.

Patients 7 years and older: The recommended starting dose of JAVYGTOR is 10 to 20 mg/kg taken once daily.

Dosage Adjustment (Evaluation Period)

Existing dietary protein and Phe intake should not be modified during the evaluation period.

If a 10 mg/kg per day starting dose is used, then response to therapy is determined by change in blood Phe following treatment with JAVYGTOR at 10 mg/kg per day for a period of up to 1 month. Blood Phe levels should be checked after 1 week of JAVYGTOR treatment and periodically for up to a month. If blood Phe does not decrease from baseline at 10 mg/kg per day, the dose may be increased to 20 mg/kg per day. Patients whose blood Phe does not decrease after 1 month of treatment at 20 mg/kg per day do not show a biochemical response and treatment with JAVYGTOR should be discontinued in these patients.

If a 20 mg/kg per day starting dose is used, then response to therapy is determined by change in blood Phe following treatment with JAVYGTOR at 20 mg/kg per day for a period of 1 month. Blood Phe levels should be checked after 1 week of JAVYGTOR treatment and periodically during the first month. Treatment should be discontinued in patients who do not show a biochemical response (blood Phe does not decrease) after 1 month of treatment at 20 mg/kg per day [see Warnings and Precautions (5.4)].

Once responsiveness to JAVYGTOR has been established, the dosage may be adjusted within the range of 5 to 20 mg/kg per day according to biochemical response to therapy (blood Phe). Periodic blood Phe monitoring is recommended to assess blood Phe control, especially in pediatric patients [see Warnings and Precautions (5.3)].

Preparation and Administration Instructions

Take JAVYGTOR orally with a meal, preferably at the same time each day [see Clinical Pharmacology (12.3)]. A missed dose should be taken as soon as possible, but two doses should not be taken on the same day.

JAVYGTOR (sapropterin dihydrochloride) Tablets

JAVYGTOR tablets may be swallowed either as whole tablets or dissolved in 120 to 240 mL of water or apple juice and taken orally within 15 minutes of dissolution. It may take a few minutes for the tablets to dissolve. To make the tablets dissolve faster, tablets may be stirred or crushed. The tablets may not dissolve completely. Patients may see small pieces floating on top of the water or apple juice. This is normal and safe for patients to swallow. If after drinking the medicine patients still see pieces of the tablet in the container, more water or apple juice can be added to make sure all of the medicine is consumed. JAVYGTOR tablets may also be crushed and then mixed in a small amount of soft foods such as apple sauce or pudding.