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Methylin Chewable Tablets

Last reviewed on RxList: 1/23/2017
Methylin Chewable Tablets Side Effects Center

Last reviewed on RxList 01/24/2017

Methylin Chewable Tablets (methylphenidate HCl) is a central nervous system stimulant used to treat attention deficit disorder (ADD), attention deficit hyperactivity disorder (ADHD), and narcolepsy. Common side effects of Methylin Chewable Tablets include:

  • headache,
  • stomach pain,
  • loss of appetite,
  • weight loss,
  • trouble sleeping (insomnia),
  • dizziness,
  • nausea,
  • vomiting,
  • lightheadedness,
  • irritability,
  • nervousness,
  • vision problems,
  • dry mouth,
  • constipation,
  • sweating,
  • skin rash,
  • numbness or tingling in the hands or feet, or
  • (rarely) drowsiness.

Methylin Chewable Tablets may raise your blood pressure. Check your blood pressure regularly and tell your doctor if the results are high. Tell your doctor if you have serious side effects of Methylin Chewable Tablets including:

  • numbness/pain/skin color change/sensitivity to temperature in the fingers or toes,
  • fast/pounding/irregular heartbeat,
  • mental/mood/behavior changes (such as agitation, aggression, mood swings, abnormal thoughts, thoughts of suicide), or
  • uncontrolled muscle movements (such as twitching, shaking),
  • sudden outbursts of words or sounds that are hard to control.

The adult dose of Methylin is 20 to 30 mg daily, administered in divided doses 2 or 3 times daily, preferably 30 to 45 minutes before meals. The initial dose for children 6 years and older is 5 mg twice daily (before breakfast and lunch) with gradual increments of 5 to 10 mg weekly. Methylin may interact with blood thinners, clonidine, dobutamine, epinephrine, isoproterenol, phenylbutazonie, cold/allergy medicine that contains phenylephrine, potassium citrate, sodium acetate, sodium bicarbonate, citric acid and potassium citrate, or sodium citrate and citric acid, medications to treat high or low blood pressure, stimulants or diet pills, seizure medicines, or antidepressants. Tell your doctor all medications and supplements you use. Methylin should be used during pregnancy only when prescribed. It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding. Withdrawal symptoms may occur if you suddenly stop taking this medication.

Our Methylin Chewable Tablets (methylphenidate HCl) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Methylin Chewable Tablets Consumer Information

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking methylphenidate and call your doctor at once if you have a serious side effect such as:

  • fast, pounding, or uneven heartbeats;
  • feeling like you might pass out;
  • fever, sore throat, and headache with a severe blistering, peeling, and red skin rash;
  • aggression, restlessness, hallucinations, unusual behavior, or motor tics (muscle twitches);
  • easy bruising, purple spots on your skin; or
  • dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, confusion, chest pain, shortness of breath, uneven heartbeats, seizure).

Less serious side effects may include:

  • stomach pain, nausea, vomiting, loss of appetite;
  • vision problems, dizziness, mild headache;
  • sweating, mild skin rash;
  • numbness, tingling, or cold feeling in your hands or feet;
  • nervous feeling, sleep problems (insomnia); or
  • weight loss.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Methylin Chewable Tablets (Methylphenidate HCl Chewable Tablets )

Methylin Chewable Tablets Professional Information

SIDE EFFECTS

Nervousness and insomnia are the most common adverse reactions but are usually controlled by reducing dosage and omitting the drug in the afternoon or evening. Other reactions include hypersensitivity (including skin rash, urticaria, fever, arthralgia, exfoliative dermatitis, erythema multiforme with histopathological findings of necrotizing vasculitis, and thrombocytopenic purpura); anorexia; nausea; dizziness; palpitations; headache; dyskinesia; drowsiness; blood pressure and pulse changes, both up and down; tachycardia; angina; cardiac arrhythmia; abdominal pain; weight loss during prolonged therapy; libido changes; and rhabdomyolysis. There have been rare reports of Tourette's syndrome. Toxic psychosis has been reported. Although a definite causal relationship has not been established, the following have been reported in patients taking this drug: instances of abdominal liver function, ranging from transaminase elevation to hepatic coma; isolated cases of cerebral arteritis and/or occlusion; leukopenia and/or anemia; transient depressed mood; a few instances of scalp hair loss. Very rare reports of neuroleptic malignant syndrome (NMS) have been received, and, in most of these, patients were concurrently receiving therapies associated with NMS. In a single report, a ten year old boy who had been taking methylphenidate for approximately 18 months experienced an NMS-like event within 45 minutes of ingesting his first dose of venlafaxine. It is uncertain whether this case represented a drug-drug interaction, a response to either drug alone, or some other cause.

In children, loss of appetite, abdominal pain, weight loss during prolonged therapy, insomnia, and tachycardia may occur more frequently; however, any of the other adverse reactions listed above may also occur.

Read the entire FDA prescribing information for Methylin Chewable Tablets (Methylphenidate HCl Chewable Tablets )

Related Resources for Methylin Chewable Tablets

Read the Methylin Chewable Tablets User Reviews »

© Methylin Chewable Tablets Patient Information is supplied by Cerner Multum, Inc. and Methylin Chewable Tablets Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

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