Concerta Extended-Release Tablet Dosing Equivalence
Taking two 36 mg CONCERTA (methylphenidate ER) tablets in the morning provides a total labeled morning dose of 72 mg, which is how a 72 mg daily dose is commonly prescribed since CONCERTA tablets are not available in a single 72 mg strength. [1] CONCERTA is intended for once-daily morning dosing. [1]
Available Tablet Strengths
CONCERTA extended-release tablets are available in 18 mg, 27 mg, 36 mg, and 54 mg strengths. [2] A single 72 mg CONCERTA tablet is not listed as an available tablet strength in the prescribing information. [2]
Extended-Release Formulation Constraints
CONCERTA extended-release tablets should not be split, crushed, or chewed because this compromises extended-release characteristics. [1] Taking two intact 36 mg tablets in the morning maintains the intended extended-release dosage form. [1]
Practical Equivalence to a “72 mg Tablet”
Because CONCERTA does not have a marketed single 72 mg tablet strength, there is no labeled product to which two 36 mg tablets can be said to be pharmacokinetically equivalent on a “one tablet vs one tablet” basis. [2] Clinically, the comparison that can be made is total daily methylphenidate ER dose (72 mg total), not a direct “72 mg tablet” equivalence. [2]
Dose Timing and Safety Considerations
CONCERTA should be administered orally once each day in the morning. [1] If two 36 mg tablets are being taken to reach a 72 mg dose, the regimen should be aligned with the prescriber’s instructions for total daily dosing and monitoring. [1]
When to Seek Immediate Clarification
Immediate confirmation from the prescriber or pharmacist is recommended if tablet instructions differ from the intended total daily dose, since excess methylphenidate can increase risk of adverse effects. [1]