Ingrezza Dosage

2.1 Recommended Dosage

Tardive Dyskinesia

The initial dosage for INGREZZA and INGREZZA SPRINKLE is 40 mg once daily. After one week, increase the dose to the recommended dosage of 80 mg once daily. A dosage of 40 mg or 60 mg once daily may be considered depending on response and tolerability.

​Chorea Associated with Huntington’s Disease

​The initial dosage for INGREZZA and INGREZZA SPRINKLE is 40 mg once daily. Increase the dose in 20 mg increments every two weeks to the recommended dosage of 80 mg once daily. A dosage of 40 mg or 60 mg once daily may be considered depending on response and tolerability.

2.2 Administrative Information

​Administer INGREZZA and INGREZZA SPRINKLE orally with or without food [see Clinical Pharmacology (12.3)].

​Administration Information for INGREZZA SPRINKLE

​• Open INGREZZA SPRINKLE and sprinkle the entire contents of the capsule over a bowl containing a small amount (1 tablespoonful) of soft food such as applesauce, yogurt, or pudding. Do not sprinkle the contents of the capsule into milk or drinking water. Stir the contents of the capsule into the soft food with the tablespoon and swallow the drug/food mixture immediately. If necessary, the mixture can be stored for up to 2 hours at room temperature. Discard of any unused portion after 2 hours. Following administration of the drug/food mixture, drink a glass (e.g., 240 mL) of water.

​Do not administer INGREZZA SPRINKLE via nasogastric, gastrostomy, or other enteral tubes because it may cause obstruction of enteral tubes.

​• INGREZZA SPRINKLE may be swallowed whole with water. Do not crush or chew INGREZZA SPRINKLE.

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2.3 Dosage Recommendations for Patients with Hepatic Impairment

The recommended dosage for patients with moderate or severe hepatic impairment (Child-Pugh score 7 to 15) is INGREZZA or INGREZZA SPRINKLE 40 mg once daily [see Use in Specific Populations (8.7), Clinical Pharmacology (12.3)].

2.4 Dosage Recommendations for Known CYP2D6 Poor Metabolizers

The recommended dosage for known CYP2D6 poor metabolizers is INGREZZA or INGREZZA SPRINKLE 40 mg once daily [see Use in Specific Populations (8.6), Clinical Pharmacology (12.3, 12.5)].

2.5 Dosage Recommendations for Concomitant Use with Strong CYP3A4 Inducers and Strong CYP3A4 or CYP2D6 Inhibitors

Coadministration with Strong CYP3A4 Inducers

Concomitant use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE is not recommended [see Drug Interactions (7.1)].

Coadministration with Strong CYP3A4 Inhibitors

The recommended dosage for patients receiving strong CYP3A4 inhibitors is INGREZZA or INGREZZA SPRINKLE 40 mg once daily [see Drug Interactions (7.1)].

Coadministration with Strong CYP2D6 Inhibitors

The recommended dosage for patients receiving strong CYP2D6 inhibitors is INGREZZA or INGREZZA SPRINKLE 40 mg once daily [see Drug Interactions (7.1)].