Methylphenidate

Methylphenidate is used to treat attention deficit hyperactivity disorder – ADHD. It works by changing the amounts of certain natural substances in the brain. Methylphenidate belongs to a class of drugs known as stimulants. It can help increase your ability to pay attention, stay focused on an activity, and control behavior problems. It may also help you to organize your tasks and improve listening skills.

• Methylphenidate is available under the following different brand names: Ritalin, Ritalin SR, Ritalin LA, Aptensio XR, Concerta, Daytrana, Metadate, Metadate CD, Metadate ER, Methylin, Quillivant XR, and QuilliChew ER.

Dosages of Methylphenidate

Dosage Forms and Strengths

Tablet: Schedule II

Ritalin

• 5 mg
• 10 mg
• 20 mg

Capsule, extended-release: Schedule II

• 10 mg (Aptensio XR, Ritalin LA, Metadate CD)
• 15 mg (Aptensio XR)
• 20 mg (Aptensio XR, Ritalin LA, Metadate CD)
• 30 mg (Aptensio XR, Ritalin LA, Metadate CD)
• 40 mg (Aptensio XR, Ritalin LA, Metadate CD)
• 50 mg (Aptensio XR, Metadate CD)
• 60 mg (Aptensio XR, Ritalin LA, Metadate CD)

Tablet, extended-release: Schedule II

• 10 mg (Methylin, generics)
• 18 mg (Concerta)
• 20 mg (Methylin, Ritalin SR, generics)
• 27 mg (Concerta)
• 36 mg (Concerta)
• 54 mg (Concerta)

Extended-release tablet, chewable (scored): Schedule II

QuilliChew ER

• 20 mg
• 30 mg
• 40 mg

Tablet, chewable: Schedule II

• Methylin
• 2.5 mg
• 5 mg
• 10 mg

Transdermal patch: Schedule II

• Daytrana
• 10 mg
• 15 mg
• 20 mg
• 30 mg

Oral solution: Schedule II

• Methylin
• 5 mg/5 mL
• 10 mg/5 mL

Dosage Considerations – Should be Given as Follows:

• Chronic abuse can lead to marked tolerance and psychological dependence, with varying degrees of abnormal behavior.
• Frank psychotic episodes can occur, especially with parenteral abuse.
• Withdrawal from abusive use may result in depression.
• Give cautiously to patients with a history of drug dependence or alcoholism.
• Potential for drug dependency; withdrawal following chronic therapeutic use may unmask symptoms of the underlying disorder that may require follow-up.

Attention Deficit Hyperactivity Disorder

Adult

• Metadate CD: Initial, 20 mg orally every morning before breakfast; may increase in 10- to 20-mg increments, not to exceed 60 mg/day
• Ritalin LA: Initial, 20 mg orally every morning; may adjust the dose in weekly 10-mg increments, not to exceed 60 mg/day (patients requiring a lower initial dose may begin with 10 mg)
• Concerta: Initial, 18-36 mg orally once/day; may increase by 18-mg increments at weekly intervals; maintenance dose is 18-72 mg/day
• Metadate ER, Methylin ER, and Ritalin SR: Duration of action is approximately 8 hours; may use in place of methylphenidate IR tablets when the 8-hour dosage of methylphenidate ER and SR tablets corresponds to the titrated 8-hour dosage of methylphenidate IR; not to exceed 60 mg/day
• Methylin, Ritalin (immediate-release tablets, chewable tablets, and oral solution): 20-30 mg/day orally divided every 8-12 hours, 30-45 minutes before meals; may gradually increase the dose at weekly intervals; some patients may require 40-60 mg/day; in others, 10-15 mg/day may be adequate
• Aptensio XR: 10 mg orally once/day in the morning; may increase weekly by 10-mg increments; not to exceed 60 mg/day
• QuilliChew ER (chewable extended-release tablets): 20 mg orally every morning initially; may be titrated up or down weekly in increments of 10 mg, 15 mg, or 20 mg, not to exceed 60 mg/day

Pediatric:

• Children under 6 years: Safety and efficacy not established
• Children 6 years and older:
  • Methylin, Ritalin (immediate-release tablets, chewable tablets, and oral solution): 5 mg orally twice daily 30-45 minutes before breakfast and lunch initially; may increase by 5-10 mg/day at weekly intervals; not to exceed 60 mg/day divided two to three times daily
  • Metadate ER, Methylin ER, and Ritalin SR: May be given in place of immediate-release products once the daily dose is titrated and the titrated 8-hour dosage corresponds to SR or ER tablet size; not to exceed 60 mg/day
  • Metadate CD, Ritalin LA: Initial, 20 mg orally every morning; may increase by 10 mg (Ritalin LA) or 10-20 mg (Metadate CD) once/week to not exceed 60 mg/day
  • Quillivant XR (6-12 years): 20 mg orally every morning initially; may titrate at weekly intervals by weekly 10- to 20-mg increments; not to exceed 60 mg/day
  • Aptensio XR: 10 mg orally once/day in the morning; may increase weekly by 10-mg increments; not to exceed 60 mg/day
  • QuilliChew ER (chewable extended-release tablets): 20 mg orally every morning initially; may be titrated up or down weekly in increments of 10 mg, 15 mg, or 20 mg, not to exceed 60 mg/day
  • Immediate-release weight-based dosing
    • Initial: 0.3 mg/kg/dose orally before breakfast and lunch; may increase by 0.1 mg/kg/dose once/week
    • Maintenance: 0.3-1 mg/kg orally before breakfast and lunch; not to exceed 2 mg/kg/day orally divided every 12 hours

Concerta (methylphenidate-naïve)

• Trilayer core tablets; extended-release core with immediate release
• Initial: 18 mg orally once/day; dosage may be increased by 18 mg/day at weekly intervals
• Do not exceed 54 mg/day in children (6-12 years) and 72 mg/day in adolescents (13-17 years)

Concerta (patients taking methylphenidate)

• 18 mg orally every morning (if switching from methylphenidate 5 mg orally every 8-12 hours)
• 36 mg orally every morning (if switching from methylphenidate 10 mg every 8-12 hours)
• 54 mg orally every morning (if switching from methylphenidate 15 mg orally every 8-12 hours)
• 72 mg orally every morning (if switching from methylphenidate 20 mg orally every 8-12 hours)

Transdermal patch (Daytrana)

• Indicated for children aged 6-12 years and adolescents aged 13-17 years
• Recommended starting dose for patients new to or converting from another formulation of methylphenidate is 10 mg
• Apply patch on hip 2 hours before the desired onset; remove after 9 hours; alternate application site
• Dose titration, final dosage, and wear time should be individualized according to the needs and responses of the patient
• Titrate to effect for best results, following are manufacturer’s recommendations:
  • Week 1: 10 mg (12.5 cm² patch); releases 1.1 mg/hour
  • Week 2: 15 mg (18.75 cm² patch); releases 1.6 mg/hour
  • Week 3: 20 mg (25 cm² patch); releases 2.2 mg/hour
  • Week 4: 30 mg (37.5 cm² patch); releases 3.3 mg/hour

Narcolepsy

Adult:

• Methylin, Ritalin (immediate-release tablets, chewable tablets, and oral solution): 20-30 mg/day orally divided every 8-12 hours, 30-45 minutes before meals; some patients may require 40-60 mg/day; in others, 10-15 mg/day may be adequate
• Metadate ER, Methylin ER, and Ritalin SR: Duration of action is approximately 8 hours; may use in place of methylphenidate IR tablets when the 8-hour dosage of methylphenidate ER and SR tablets corresponds to the titrated 8-hour dosage of methylphenidate IR

Pediatric:

Children under 6 years

• Safety and efficacy not established

Children 6 years and older:

• Methylin, Ritalin (immediate-release tablets, chewable tablets, and oral solution): 5 mg orally every 12 hours; may increase by 5-10 mg/day weekly; not to exceed 60 mg/day
• Metadate ER, Methylin ER, and Ritalin SR: May be given in place of immediate-release products once the daily dose is titrated and the titrated 8-hour dosage corresponds to SR or ER tablet size; not to exceed 60 mg/day