However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/ tongue/throat), severe dizziness, trouble breathing. Ask your doctor or pharmacist for more details.Ī very serious allergic reaction to this drug is rare. If a painful or prolonged erection occurs, stop using this drug and get medical help right away, or permanent problems could occur. Caregivers/parents should also be watchful for this serious side effect in boys. Rarely, males (including young boys and teens) may have a painful or prolonged erection lasting 4 or more hours while using this medication. Get medical help right away if you have any very serious side effects, including: fainting, seizure, symptoms of a heart attack (such as chest/jaw/left arm pain, shortness of breath, unusual sweating), symptoms of a stroke (such as weakness on one side of the body, trouble speaking, sudden vision changes, confusion). Tell your doctor right away if you have any serious side effects, including: signs of blood flow problems in the fingers or toes (such as coldness, numbness, pain, or skin color changes), unusual wounds on the fingers or toes, fast/pounding/irregular heartbeat, mental/mood/behavior changes (such as agitation, aggression, mood swings, abnormal thoughts, thoughts of suicide), uncontrolled muscle movements (such as twitching, shaking), sudden outbursts of words/sounds that are hard to control, vision changes (such as blurred vision). Check your blood pressure regularly and tell your doctor if the results are high. This medication may raise your blood pressure.

Many people using this medication do not have serious side effects. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. This effect is harmless because your body has already absorbed the medication. If any of these effects last or get worse, tell your doctor or pharmacist promptly.Īn empty tablet shell may appear in your stool. Nervousness, trouble sleeping, loss of appetite, weight loss, dizziness, nausea, vomiting, or headache may occur. Tell your doctor if your condition does not improve or if it worsens. Ask your doctor or pharmacist for more details. Take this medication exactly as prescribed to lower the risk of addiction. This risk may be higher if you have a substance use disorder (such as overuse of or addiction to drugs/alcohol). Though it helps many people, this medication may sometimes cause addiction. Talk with your doctor if this medication stops working well. When used for a long time, this medication may not work as well. Tell your doctor or pharmacist right away if you have withdrawal. Withdrawal is more likely if you have used methylphenidate for a long time or in high doses. To help prevent withdrawal, your doctor may lower your dose slowly. If you suddenly stop using this medication, you may have withdrawal symptoms (such as depression, suicidal thoughts, or other mental/mood changes).

Also, if you have used it for a long time, do not suddenly stop using this drug without consulting your doctor.

Your doctor may direct you to gradually increase or decrease your dose. The dosage is based on your medical condition and response to treatment. To help you remember, take it at the same time each day. Take this medication regularly to get the most benefit from it. Doing so can release all of the drug at once, increasing the risk of side effects. Swallow this medication with a full glass of liquid (8 ounces/240 milliliters). Taking this medication late in the day may cause trouble sleeping ( insomnia). Take this medication by mouth with or without food as directed by your doctor, usually once daily in the morning. If you have any questions, ask your doctor or pharmacist. Read the Medication Guide provided by your pharmacist before you start taking methylphenidate and each time you get a refill.

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