Ritalin


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Ritalin

 [rit´ah-lin]
trademark for preparations of methylphenidate hydrochloride, a mild central nervous system stimulant.

methylphenidate hydrochloride

Apo-Methylphenidate (CA), Biphentin (CA), Concerta, Concerta XL (UK), Daytrana, Equasym (UK), Equasym XL (UK), Medikinet (UK), Medikinet XL (UK), Metadate CD, Metadate ER, PHL-Methylphenidate (CA), PMS-Methylphenidate (CA), Ratio-Methylphenidate (CA), Ritalin, Ritalin LA, Ritalin-SR

Pharmacologic class: Piperidine derivative

Therapeutic class: CNS stimulant

Controlled substance schedule II

Pregnancy risk category C

FDA Box Warning

• Give cautiously to patients with history of drug dependence or alcoholism. Chronic abuse can cause marked tolerance and psychological dependence with abnormal behavior. Frank psychotic episodes may occur, especially with parenteral abuse. Supervise carefully during withdrawal from abusive use, as severe depression may occur. Withdrawal after prolonged therapeutic use may unmask symptoms of underlying disorder, possibly requiring follow-up.

Action

Increases release of norepinephrine, which stimulates impulse transmission in respiratory system and CNS. Net effect is increased mental alertness.

Availability

Capsules (extended-release): 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg

Solution (oral): 5 mg/5 ml, 10 mg/10 ml

Tablets (chewable): 2.5 mg, 5 mg, 10 mg

Tablets (extended-release): 10 mg, 18 mg, 20 mg, 27 mg, 36 mg, 54 mg

Tablets (prompt-release): 5 mg, 10 mg, 20 mg

Tablets (sustained-release): 20 mg

Transdermal patch: 10 mg/9 hours, 15 mg/9 hours, 20 mg/9 hours, 30 mg/9 hours

Indications and dosages

Adjunctive treatment of attention deficit hyperactivity disorder (ADHD)

Adults: 5 to 20 mg P.O. (prompt-release tablets) two to three times daily. Or, 20 to 30 mg (oral solution) P.O. daily. Once maintenance dosage is determined, may switch to extended-release.

Children older than age 6: Initially, 5 mg P.O. (prompt-release tablets or oral solution) before breakfast and lunch; increase by 5 to 10 mg at weekly intervals, not to exceed 60 mg/day. Once maintenance dosage is determined, may switch to extended-release.

If previous methylphenidate dosage was 10 mg b.i.d. or 20 mg sustained-release, give Ritalin LA 20 mg P.O. once daily. If previous dosage was 15 mg b.i.d., give Ritalin LA 30 mg P.O. once daily. If previous dosage was 20 mg b.i.d. or 40 mg sustained-release, give Ritalin LA 40 mg P.O. once daily. If previous dosage was 30 mg b.i.d. or 60 mg sustained-release, give Ritalin LA 60 mg P.O. once daily.

In all patients, Ritalin-SR or Metadate ER may be prescribed instead of prompt-release tablets when 8-hour dosage of those forms corresponds to titrated 8-hour dosage of prompt-release tablets.

Concerta-

Adults: If new to methylphenidate, initially 18 or 36 mg/day. Increase dosage by 18 mg/day at weekly intervals, not to exceed 72 mg/day. For patients currently using methylphenidate, dosing is based on current dosage regimen and clinical judgment.

Children ages 6 and older who haven't used methylphenidate previously: Initially, 18 mg P.O. once daily in morning; may be titrated weekly up to 54 mg/day

Children ages 6 and older using other methylphenidate forms: 18 mg P.O. once daily in morning if previous dosage was 5 mg two to three times daily, or 20 mg P.O. daily (sustained-release); 36 mg once daily in morning if previous dosage was 10 mg two to three times daily or 40 mg daily (sustained-release); or 54 mg once daily in morning if previous dosage was 15 mg two to three times daily or 60 mg once daily (sustained-release)

Metadate CD-

Children ages 6 and older: Initially, 20 mg once daily; may adjust in weekly increments of 10 to 20 mg, to a maximum of 60 mg/day taken in morning

Adjunctive treatment of attention deficit hyperactivity disorder (ADHD)

Daytrana-

Children ages 6 and older: Apply patch to hip area 2 hours before effect is needed; remove 9 hours after application; titrate dosages as needed.

Narcolepsy

Adults: 10 mg P.O. (Ritalin, Ritalin SR, or Metadate ER) two to three times daily, 30 to 45 minutes before a meal. Some patients may require up to 60 mg daily.

Off-label uses

• Depression in ill, elderly patients (such as those with cerebrovascular accident)
• To enhance analgesia and sedation in patients receiving opioids

Contraindications

• Hypersensitivity to drug or its components, including sucrose (Metadate CD)
• Glaucoma
• Motor tics, Tourette syndrome (or family history of syndrome)
• Marked anxiety, tension, agitation
• Severe hypertension, angina, arrhythmias, heart failure, recent myocardial infarction, hyperthyroidism, thyrotoxicosis
• Concurrent use of halogenated anesthetics
• MAO inhibitor use within past 14 days

Precautions

Use cautiously in:
• hypertension, seizure disorders
• psychosis
• suicidal or homicidal tendencies
• slow growth (children)
• elderly or debilitated patients
• pregnant or breastfeeding patients
• children younger than age 6.

Administration

Be aware that Metadate CD contains sucrose. Don't give to patients with rare hereditary problems of fructose intolerance, glucose-galactose malabsorption, or sucrase-isomaltase insufficiency.
• Don't give Metadate CD on day of surgery.
• Don't crush extended-release tablets or extended-release trilayer core tablets (Concerta).
• Have patient swallow extended-release capsules (Metadate CD, Ritalin LA) intact; or, if desired, sprinkle entire contents onto small amount (1 tbsp) of applesauce immediately before administration. (However, don't sprinkle Ritalin LA onto warm applesauce because its release properties may be affected.) Give water after patient swallows dose.
• Don't give extended-release tablets to initiate therapy or for daily use until dosage has been titrated using conventional tablets.
• Apply patch immediately after opening pouch to a clean, dry hip area and alternate hips daily.

Don't give within 14 days of MAO inhibitor use.
• To help prevent insomnia, give last daily dose of conventional tablets several hours before bedtime.
• Discontinue drug periodically in children who have responded to therapy, to assess patient's condition. After withdrawal, improvement may be temporary or permanent.
• Be aware that therapy shouldn't continue indefinitely.

Adverse reactions

CNS: restlessness, tremor, dizziness, headache, irritability, hyperactivity, insomnia, akathisia, dyskinesia, reversible ischemic neurologic deficit, toxic psychosis

CV: hypertension, hypotension, palpitations, tachycardia, Raynaud's phenomenon, sudden death (patients with structural cardiac abnormalities or other serious heart problems)

EENT: blurred vision

GI: nausea, vomiting, diarrhea, constipation, cramps, dry mouth, anorexia

Skin: rash, contact sensitization

Other: metallic taste, fever, suppression of weight gain (in children), hypersensitivity reactions, physical or psychological drug dependence, drug tolerance, peripheral coldness

Interactions

Drug-drug.Anticonvulsants, phenylbutazone, selective serotonin reuptake inhibitors, tricyclic antidepressants, warfarin: inhibited metabolism and increased effects of these drugs

Guanethidine: antagonism of hypotensive effect

Halogenated anesthetics: sudden blood pressure increase

MAO inhibitors, vasopressors: hypertensive crisis

Drug-food.Caffeine-containing foods and beverages (such as coffee, cola, chocolate): increased CNS stimulation

Drug-herbs.Ephedra (ma huang), caffeine-containing herbs (such as cola nut, guarana, maté): increased CNS stimulation

Drug-behaviors.Alcohol use: additive hypotension

Patient monitoring

• Monitor patient periodically for drug tolerance and psychological dependence.
• Watch for adverse effects. Know that these usually can be controlled by adjusting schedule or dosage.
• Monitor for contact sensitization (erythema accompanied by edema, papules, vesicles) that does not significantly improve within 48 hours or spreads beyond the patch site. Discontinue drug if this occurs.
• Stay alert for tachycardia, abdominal pain, insomnia, anorexia, and weight loss (more common in children).
• Consider periodic hematologic and liver function tests, especially during prolonged therapy.
• Monitor blood pressure, especially in patients with history of hypertension.
• Evaluate child's weight and growth patterns.
• Assess child for tics, which may develop in 15% to 30% of children using drug.

Patient teaching

• Inform patient or parent that last daily dose should be taken several hours before bedtime to avoid insomnia.
• Make sure patient or parent understands how drug should be taken.
• Tell patient taking Concerta not to be concerned if tablet-like substance appears in stool.
• Teach caregiver how to use patch and to make sure that skin is clean, dry, and free of cuts or irritation.
• Tell caregiver not to allow child to use heat sources, such as heating pads or electric blankets, while wearing the patch.
• Instruct caregiver to report redness accompanied by swelling or solid bumps or blisters on the skin that do not significantly improve within 48 hours or spread beyond the patch site.
• Tell caregiver to replace the patch if it falls off, but total wear time for the day should remain 9 hours.
• Advise patient or parent to report insomnia, palpitations, vomiting, fever, or rash.
• Caution patient or parent that continual use may lead to psychological or physical dependence.
• Instruct patient to avoid driving and other hazardous tasks until drug effects are known.
• As appropriate, review all other significant and life-threatening adverse reactions and interactions, especially those related to the drugs, foods, herbs, and behaviors mentioned above.

Ritalin

(rĭt′l-ĭn)
A trademark for the drug methylphenidate.

Ritalin

a trademark for a central nervous system stimulant (methylphenidate hydrochloride).

methylphenidate

An amphetamine-derived CNS stimulant.
 
Adverse effects
Decreased appetite—10–15% of children have major weight loss; insomnia—most suffer sleep delay; abdominal pain; headaches; dry mouth; dizziness; depression, tachycardia; a proposed link to decreased growth is uncertain.
 
Indications for
Hyperactivity, ADD, childhood narcolepsy.

Ritalin

A brand name for METHYLPHENIDATE.

Patient discussion about Ritalin

Q. What happen if you have ADHD and stop taking Ritalin? My niece was recently diagnosed as having ADHD. If her parents decide to give her Ritalin, will she be able to stop taking the medication after a while?

A. her parents should do the right thing and take her to a naturopath
doctor... or at least to 206 s. 2nd st. shelton, wa 98584 where there
are formulas for adhd that really work and are much better than the
poison they have her on now.. come on america waKE UP!yes, email me
at jchf777@gmail.com if youd like to!

Q. is ritalin dangerous if you don't have adhd?? I'm having some concentration problems and thought about taking ritalin. is it bad for me??

A. ok I get the idea more or less...shouldn't touch it without doctor's recommandation...but would he give it to me if I don't have ADHD and just find it really hard to concentrate?

Q. Can certain fruits/veggies make Ritalin less effective? I've heard this about oranges and lemons - is it true? How about other produce? How much does it weaken Ritalin? Will taking a higher dose resolve the problem? (I currently take 10mg morning and 10mg afternoon)

A. As far as I know, oranges and lemons don't affect Ritalin. However, taking the Ritalin with food may increase the amount of drug that actually get into your body, but it depends on the specific formulation (e.g. Concerta isn't affected by food). One that takes Ritalin should avoid alcoholic drinks, since it may cause decrease activity of the brain, and also should avoid herbs of several kinds (yohimbine and ephedra).

THIS IS ONLY A GENERAL ADVICE - I haven't seen you or checked you, so if you have any concerns than you should consult a doctor.

More discussions about Ritalin
References in periodicals archive ?
According to NHS figures, the number of children aged eight to 13 on drugs such as Ritalin has undergone a sevenfold increase from the 92,700 kids put on similar drugs in 1997.
THE USE OF RITALIN AND OTHER PRESCRIPTION STIMULANTS has skyrocketed since the early 90s.
Some physicians who have done research on Ritalin are alarmed at the state laws being introduced.
The "blitz" attacked by Safer and Krager was allegedly misleading, full of "anecdotal and unsubstantiated critical allegations concerning Ritalin use and side effects.
The suits also claim that Novartis used misleading advertising that focused on the drug's benefits and glossed over its side effects, including cardiovascular problems, gastrointestinal disorders, pituitary dysfunction, psychosis, and addiction, in an effort to boost Ritalin sales and profits.
For the six ADHD boys who tested objectively hyperactive, the researchers found that use of Ritalin enhanced blood flow significantly in the putamen.
What's especially worrisome is that the amount of Ritalin that caused the cancers was equivalent to as little as two-and-one-half times the maximum recommended dosage in humans.
Fortunately, at least for the curious reader, there is a great deal of other material now on offer, for the explosion in Ritalin consumption has been very nearly matched by a publishing boom dedicated to that same phenomenon.
And Andrea, who runs The ADHD Support Group, is convinced Ritalin is a breakthrough for young sufferers.
5] Numerous articles in newspapers and magazines and one book attacked Ritalin and the "myth" of the hyperactive child.
The youngster is calmed down upon the administration of Ritalin and develops an ability to concentrate better, and on the whole to function more effectively.
Physicians reported that 58% of the time a prescribed behavioral drug such as Ritalin has a positive effect on a child's performance in school.