Posology : מינונים

2     DOSAGE AND ADMINISTRATION
2.1     Pretreatment Screening
Prior to treating pediatric patients and adults with central nervous system (CNS) stimulants, including Metadex XR, assess for the presence of cardiac disease (i.e., perform a careful history, including family history of sudden death or ventricular arrhythmia, and physical examination) [see Warnings and
Precautions (5.2)].
Assess the risk of abuse prior to prescribing, and monitor for signs of abuse and dependence while on therapy. Maintain careful prescription records, educate patients about abuse, monitor for signs of abuse and overdose, and periodically reevaluate the need for Metadex XRuse [see Boxed Warning, Warnings and Precautions (5.1), Drug Abuse and Dependence (9.2, 9.3)].
2.2    Treatment of Attention Deficit Hyperactivity Disorder
Patients New to Methylphenidate
The recommended starting dosage of Metadex XRfor patients who are not currently taking dexmethylphenidate or racemic methylphenidate, or for patients who are on stimulants other than methylphenidate are:
Pediatric patients: Start with 5 mg orally once daily in the morning with or without food.
Adult patients: Start with 10 mg orally once daily in the morning with or without food.

Patients Currently on Methylphenidate
The recommended starting dose of Metadex XR for patients currently using methylphenidate is half (1/2) the total daily dose of racemic methylphenidate.
Patients currently using dexmethylphenidate immediate-release tablets may be given the same daily dose of Metadex XR.
Titration Schedule
The dose may be titrated weekly in increments of 5 mg in pediatric patients and 10 mg in adult patients. The dose should be individualized according to the needs and response of the patient. Daily doses above 30 mg in pediatrics and 40 mg in adults have not been studied and are not recommended.
Maintenance/Extended Treatment
Pharmacological treatment of ADHD may be needed for extended periods. Periodically reevaluate the long-term use of Metadex XRand adjust dosage as needed.


2.3    Administration Instructions
Metadex XRis administered orally and may be taken whole or the capsule may be opened and the entire contents sprinkled onto applesauce. If the patient is using the sprinkled administration method, the sprinkled applesauce should be consumed immediately; it should not be stored. Patients should take the applesauce with sprinkled beads in its entirety without chewing. The dose of a single capsule should not be divided. The contents of the entire capsule should be taken, and patients should not take anything less than one capsule per day.

2.4    Dose Reduction and Discontinuation
If paradoxical aggravation of symptoms or other adverse reactions occur, reduce the dosage, or if necessary, discontinue Metadex XR. If improvement is not observed after appropriate dosage adjustment over a one-month period, the drug should be discontinued.