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Concerta Side Effects and Warnings
Concerta (methylphenidate) is an amphetamine-like prescription stimulant commonly used to treat Attention Deficit Hyperactivity Disorder (ADHD) in children and adults.
FDA “Black Box” Warning Label
The Food and Drug Administration (FDA) requires the following "black box" warning on all methylphenidate drugs, which means that medical studies indicate methylphenidate drugs carry a significant risk of serious, or even life-threatening, adverse effects.
CONCERTA IS A FEDERALLY CONTROLLED SUBSTANCE (CII) BECAUSE IT CAN BE ABUSED OR LEAD TO DEPENDENCE. KEEP CONCERTA IN A SAFE PLACE TO PREVENT MISUSE AND ABUSE. SELLING OR GIVING AWAY CONCERTA MAY HARM OTHERS, AND IS AGAINST THE LAW.
TELL YOUR DOCTOR IF YOU OR YOUR CHILD HAVE (OR HAVE A FAMILY HISTORY OF) EVER ABUSED OR BEEN DEPENDENT ON ALCOHOL, PRESCRIPTION MEDICINES OR STREET DRUGS.
ABOVE: FDA black box warning label means that medical studies indicate the drug carries a significant risk of serious or even life-threatening adverse effects. The bold warning label appears on the manufacturer's wholesale packaging and is the strongest alert the FDA can require of drug-makers.
How Concerta Works
We don't know exactly why it produces the effects it does. Methylphenidate was first synthesized in 1944 in an (unsuccessful) attempt to create a stimulant that would not induce addiction or tolerance. Methylphenidate (Concerta) is very closely related to amphetamine: similar in chemical structure, metabolization and clinical effects. This close connection is the chief reason methylphenidate drug use raises concern among patients and others.
ABOVE: Drug Enforcement Administration, US Department of Justice. “Methylphenidate, A Background Paper,” NCJRS (National Criminal Justice Reference System) Abstract, NCJ 166349 (1995): www.ncjrs.gov/App/publications/abstract.aspx?ID=163349.
ABOVE: Rush, C.R., et al. "Behavioral pharmacological similarities between methylphenidate and cocaine in cocaine abusers," Exp. Clin. Psychopharmacol: Feb;9(1):59-73(2001): www.ncbi.nlm.nih.gov/pubmed/11519636.
Do Not Use If
You have high blood pressure or any form of heart disease, are very nervous or have severe insomnia, have a history of addiction to drugs or alcohol. Do not combine with monoamine oxidase inhibitors.
Common Side Effects
Other Serious Side Effects Include
Less Common Side Effects
Overdose Side Effects
Methylphenidate drugs have been extensively abused. Extreme psychological dependence and severe social disability have resulted. Abuse of methylphenidate drugs may cause a sudden heart attack even in those with no signs of heart disease. Symptoms of overdose that require immediate medical assistance include:
What to Do About Side Effects
The last dose of the drug every day should be taken several hours before bedtime to prevent insomnia.
Nervousness usually goes away and appetite often returns so that weight loss is rarely dangerous.
If high blood pressure, rapid pulse, paranoia, or tolerance becomes a problem, the drug is usually stopped.
Nothing can be done about the addiction except to remember not to stop taking any version of methylphenidate abruptly.
ABOVE: 21 USC Sec. 812 01/22/02. Drug Enforcement Administration, US Department of Justice. www.dea.gov/pubs/csa/812.htm.
Dependence, Tolerance and Withdrawal
It is possible to build up a tolerance to Concerta, which means the person using the drug needs to take larger doses to achieve the same effect. Over time, the body might come to depend on methylphenidate drugs just to function normally. The person craves the drug and their psychological dependence makes them panic if access is denied, even temporarily.
Withdrawal symptoms can include tiredness, panic attacks, crankiness, extreme hunger, depression and nightmares. Some people experience a pattern of "binge crash" characterized by using continuously for several days without sleep, followed by a period of heavy sleeping.
If It Doesn't Work
The drug should be stopped gradually. Withdrawal symptoms are psychological and stopping suddenly can cause extreme fatigue and severe, even suicidal, depression in adult patients.
ABOVE: The Essential Guide to Psychiatric Drugs—Rev. and updated (2007).
If It Does Work
"Also, in addition to increasing heart rate and blood pressure, causing insomnia and weight loss, and sometimes causing psychotic symptoms, the stimulant medications used for ADHD (methylphenidate and amphetamines) may cause heart disease if taken for a long time. The latter problem led to a debate within the FDA, well covered by newspapers, about whether to issue a special warning to doctors. In the end, the FDA decided not to do this, but the risk remains," reports Jack M. Gorman, M.D., professor of psychiatry at Columbia University and deputy director of the New York State Psychiatric Institute.
The Question of Whether Concerta Impairs Creativity
Methylphenidate (Concerta) may have subtle impacts on cognitive and intellectual processes. Both parents and researchers have noticed that children taking methylphenidate sometimes answer questions in ways that seem overly compliant or narrow, suggesting the drug might restrict creative thinking. One study found hyperactive children taking methylphenidate offered less varied answers to open-ended questions.
How much do "neuro-enhancing" drugs really help?
And there's the question of what we mean by "smarter."
The psycho-stimulants help students bear down on their work, but with odd effects. One college student says he spends "too much time researching a paper rather than actually writing it--a problem, I assure you, that is common to all intellectually curious students on stimulants." Another student looked back at papers he'd written while on Adderall and found them verbose, "I'd produce two pages on something that could be said in a couple of sentences."
Could Enhancing One Kind of Thinking Exact a Toll on Others?
All these questions need proper scientific answers, but for now much of the discussion is taking place furtively, among an increasing number of Americans who are performing daily experiments on their own brains (or their children's brains).
"It's Not the Real You. It's a Fake Person"
Not all children with ADD feel better on methylphenidate drugs. One teenager said: "It's not the real you. It's a fake person." Another, after being on methylphenidate drugs for seven years, begged his parents not to make him take it, but one of his teachers would not allow him into her classroom unless he had a note signed by the school nurse that he had received methylphenidate at school that day. The boys complained of dizziness, stomach upset, inability to sleep, a buzzed feeling, and appetite-loss because of methylphenidate.
ABOVE: Diller, L.H. Running on Ritalin: A Physician Reflects on Children, Society, and Performance in a Pill; Bantam Doubleday Dell Pub. Group, Inc. (1998); citing Feussner, G. "Actual Abuse Issues," Conference Report: Stimulant Use in the Treatment of ADHD, Drug Enforcement Administration, US Department of Justice, Washington DC, Dec. 1996.
ABOVE: Swanson, J.M., et al. "Effect of stimulant medication on children with attention deficit disorder: a review of reviews," Exceptional Children, 60:154-62, 1993.
Concerta Withdrawal Suspected Association with Sexual Dysfunction
HEALTH CANADA (2006): A 16-year-old boy taking extended-release methylphenidate, with no history of sexual dysfunction, experienced priapism (a painful, persistent and abnormal erection unaccompanied by sexual desire or excitation) that would last up to 24 hours whenever he forgot to take his medication. He had been taking 54 mg of the drug daily for about one year for attention deficit hyperactivity disorder (ADHD) and was not taking any other medications. The priapism would resolve after he took his medication. Treatment with extended-release methylphenidate was continued because the product worked well in controlling his ADHD. The patient did not appear to have any sexual dysfunction when he remembered to take his medication. Priapism is not labeled in the Canadian product monograph.
A case of priapism associated with withdrawal from sustained-release methylphenidate has been reported in the literature.
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