Ritalin 5mg Tablets
Overview
What is this medicine?
How to Use This Medicine
To get the most benefit from your medication, follow your doctor's instructions carefully. Read all the information provided with your prescription and follow the instructions closely. Take your medication 30 to 45 minutes before meals. If you need to take this medication more than once a day, be sure to take your last dose before 6 PM.
Storing and Disposing of Your Medication
Keep your medication at room temperature, away from light and moisture. Store it in a dry place, such as a closet or drawer, and avoid storing it in a bathroom. To prevent accidental ingestion, store your medication in a safe and secure location where children and pets cannot access it. Consider using a locked box or cabinet to keep your medication out of reach. When you're finished with your medication or it's expired, dispose of it properly. Do not flush it down the toilet or pour it down the drain unless instructed to do so by your pharmacist. Check with your pharmacist for guidance on the best way to dispose of your medication, and ask about any local drug take-back programs.
What to Do If You Miss a Dose
If you miss a dose, take it as soon as you remember. However, do not take your medication after 6 PM. If it's almost time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule. Do not take two doses at the same time or take extra doses to make up for a missed dose.
Lifestyle & Tips
- Take exactly as prescribed by your doctor. Do not take more or less than directed.
- Take the immediate-release tablets 30-45 minutes before meals for best absorption, but can be taken with food if stomach upset occurs.
- Avoid taking doses late in the day (after 6 PM) to prevent sleep problems.
- Do not crush, chew, or break extended-release forms of methylphenidate.
- Store in a safe place, away from children, due to its potential for abuse.
- Inform your doctor about all other medications, supplements, and herbal products you are taking.
- Regularly monitor blood pressure and heart rate as advised by your doctor.
- Maintain a healthy diet and regular exercise, especially for children, to support overall health and growth.
Available Forms & Alternatives
Dosing & Administration
Adult Dosing
Condition-Specific Dosing:
Pediatric Dosing
Dose Adjustments
Renal Impairment:
Hepatic Impairment:
Pharmacology
Mechanism of Action
Pharmacokinetics
Absorption:
Distribution:
Elimination:
Pharmacodynamics
Safety & Warnings
BLACK BOX WARNING
Side Effects
Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor or seek medical attention immediately:
Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of liver problems, including:
+ Dark urine
+ Tiredness
+ Decreased appetite
+ Upset stomach or stomach pain
+ Light-colored stools
+ Vomiting
+ Yellow skin or eyes
Severe headache, dizziness, or fainting
Joint pain
Purple patches on the skin or mouth
Changes in eyesight or eye pain, swelling, or redness
Seizures
Shakiness
Trouble controlling body movements
Difficulty controlling sounds, such as humming, throat clearing, yelling, or making loud noises
Excessive sweating
Restlessness
Changes in skin color, including pale, blue, gray, purple, or red discoloration of hands, feet, or other areas
Numbness, pain, tingling, or cold sensation in hands or feet
Sores or wounds on fingers or toes
Muscle pain or weakness, dark urine, or difficulty urinating
Changes in sex drive
Weakness on one side of the body, trouble speaking or thinking, changes in balance, drooping on one side of the face, or blurred vision
Heart Problems: Important Warning
Sudden deaths have occurred in people with certain heart problems or defects. Inform your doctor if you have any heart condition or defect. If a family member has an abnormal heartbeat or died suddenly, notify your doctor. Seek medical help immediately if you experience any signs of heart problems, such as:
Chest pain
Abnormal heartbeat
Shortness of breath
Severe dizziness or fainting
Other Serious Side Effects
Painful erection (hard penis) or an erection lasting longer than 4 hours, which can occur even when not having sex. If left untreated, this may lead to lasting sexual problems.
New or worsening behavior and mood changes, such as changes in thinking, anger, or hallucinations. If you or a family member have a history of mental or mood problems, such as depression or bipolar illness, or if a family member has committed suicide, inform your doctor. Seek medical help immediately if you experience:
+ Hallucinations
+ Changes in behavior
+ Signs of mood changes, such as depression, thoughts of suicide, nervousness, emotional ups and downs, abnormal thinking, anxiety, or loss of interest in life
Serotonin syndrome, a potentially life-threatening condition, may occur if you take this medication with certain other drugs. Seek medical help immediately if you experience:
+ Agitation
+ Changes in balance
+ Confusion
+ Hallucinations
+ Fever
+ Fast or abnormal heartbeat
+ Flushing
+ Muscle twitching or stiffness
+ Seizures
+ Shivering or shaking
+ Excessive sweating
+ Severe diarrhea, upset stomach, or vomiting
+ Severe headache
Common Side Effects
Most people do not experience serious side effects, but some may occur. If you experience any of the following side effects, contact your doctor or seek medical attention if they bother you or do not go away:
Dizziness or headache
Drowsiness
Dry mouth
Stomach pain, upset stomach, vomiting, or decreased appetite
Heartburn
Weight loss
Feeling nervous or excitable
Trouble sleeping
Nose or throat irritation
Reporting Side Effects
If you have questions about side effects or experience any side effects not listed here, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
Seek Immediate Medical Attention If You Experience:
- Chest pain, shortness of breath, or fainting (seek immediate medical attention)
- New or worsening aggression or hostility
- New or worsening tics (uncontrolled movements or sounds)
- Seeing or hearing things that are not real (hallucinations)
- Believing things that are not true (delusions)
- Feeling unusually excited, irritable, or having racing thoughts (signs of mania)
- Unexplained numbness, pain, skin color change, or sensitivity to temperature in fingers or toes (Raynaud's phenomenon)
- Blurred vision or other vision changes
- Unexplained weight loss or lack of growth in children
Before Using This Medicine
It is essential to inform your doctor about the following:
Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the allergic reaction you experienced, including any symptoms that occurred.
Certain health conditions, including:
+ Glaucoma
+ Agitation
+ Anxiety
+ Overactive thyroid (hyperthyroidism)
A family history of:
+ Blood vessel disease
+ High blood pressure (hypertension)
+ Heart structure problems or other heart conditions
+ Tourette's syndrome or tics
If you have ever had a stroke
Recent use of certain medications for depression or Parkinson's disease within the last 14 days, such as:
+ Isocarboxazid
+ Phenelzine
+ Tranylcypromine
+ Selegiline
+ Rasagiline (note: taking this medication with these drugs can lead to very high blood pressure)
Current use of:
+ Linezolid
+ Methylene blue
This list is not exhaustive, and it is crucial to discuss all your medications, including prescription and over-the-counter drugs, natural products, and vitamins, with your doctor and pharmacist. They will help you determine if it is safe to take this medication with your existing health conditions and medications. Never start, stop, or change the dose of any medication without consulting your doctor first.
Precautions & Cautions
To ensure your safety, avoid driving and other activities that require alertness until you understand how this medication affects you. As directed by your doctor, have regular blood tests, blood pressure checks, and heart rate monitoring. You may need to undergo certain heart tests before starting this medication. If you have any questions or concerns, consult with your doctor.
While taking this medication, it is recommended to avoid consuming alcohol. Additionally, limit your intake of caffeine (found in tea, coffee, cola) and chocolate, as combining these with the medication may cause nervousness, shakiness, and a rapid heartbeat.
If you have high blood pressure, consult with your doctor before using over-the-counter (OTC) products that may increase blood pressure, such as cough or cold medications, diet pills, stimulants, non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen, and certain natural products or aids.
Long-term or high-dose use of this medication may lead to tolerance, where the medication becomes less effective, and higher doses may be required to achieve the same effect. If you notice the medication is not working as well as it previously did, contact your doctor. Do not exceed the prescribed dose.
This medication may increase the risk of seizures in certain individuals, including those with a history of seizures. Discuss your risk of seizures with your doctor. In some cases, this medication may affect growth in children and teenagers, and regular growth checks may be necessary. Consult with your doctor to discuss this further.
If you are pregnant, plan to become pregnant, or are breastfeeding, inform your doctor. It is crucial to discuss the benefits and risks of this medication to both you and your baby.
Overdose Information
Overdose Symptoms:
- Vomiting
- Agitation
- Tremors
- Hyperreflexia
- Muscle twitching
- Convulsions (may be followed by coma)
- Euphoria
- Confusion
- Hallucinations
- Delirium
- Sweating
- Flushing
- Headache
- Hyperpyrexia (very high fever)
- Tachycardia (fast heart rate)
- Palpitations
- Cardiac arrhythmias
- Hypertension (high blood pressure)
- Mydriasis (dilated pupils)
- Dry mouth and mucous membranes
What to Do:
In case of suspected overdose, seek immediate medical attention. Call 911 or your local emergency number. For poison control, call 1-800-222-1222. Treatment is generally supportive, including gastric lavage, activated charcoal, and management of symptoms (e.g., benzodiazepines for agitation/seizures, alpha-blockers for hypertension).
Drug Interactions
Contraindicated Interactions
- Monoamine Oxidase Inhibitors (MAOIs) (concurrent use or within 14 days of MAOI discontinuation) - risk of hypertensive crisis.
Major Interactions
- Vasopressors (e.g., phenylephrine, pseudoephedrine) - risk of increased blood pressure.
- Halogenated Anesthetics (e.g., halothane, isoflurane) - risk of sudden blood pressure and heart rate increases during surgery.
- Anticoagulants (e.g., warfarin) - may inhibit metabolism, increasing anticoagulant effect.
- Anticonvulsants (e.g., phenobarbital, phenytoin, primidone) - may inhibit metabolism, increasing anticonvulsant levels.
- Tricyclic Antidepressants (TCAs) (e.g., imipramine, desipramine) - may inhibit metabolism, increasing TCA levels and risk of cardiovascular effects.
- Selective Serotonin Reuptake Inhibitors (SSRIs) - potential for serotonin syndrome (rare, but possible with high doses or other serotonergic agents).
Moderate Interactions
- Antihypertensive medications - methylphenidate may reduce the effectiveness of antihypertensive drugs.
- Alcohol - may increase plasma levels of methylphenidate and lead to dose dumping with extended-release formulations.
- Dopaminergic drugs (e.g., levodopa) - theoretical risk of additive dopaminergic effects.
Minor Interactions
- Caffeine - additive stimulant effects.
Monitoring
Baseline Monitoring
Rationale: Methylphenidate can cause dose-related increases in BP and HR.
Timing: Prior to initiation of therapy.
Rationale: Stimulants have been associated with modest growth suppression.
Timing: Prior to initiation of therapy.
Rationale: To identify pre-existing cardiac conditions that may contraindicate stimulant use.
Timing: Prior to initiation of therapy.
Rationale: To assess risk of exacerbation of psychiatric conditions or emergence of new symptoms.
Timing: Prior to initiation of therapy.
Routine Monitoring
Frequency: At each visit or at least every 3-6 months.
Target: Within normal limits for age.
Action Threshold: Significant or sustained increases (e.g., >10-20 mmHg systolic/diastolic or >10-20 bpm HR) warrant investigation and potential dose adjustment or discontinuation.
Frequency: Every 3-6 months.
Target: Normal growth trajectory.
Action Threshold: Significant deviation from expected growth curve warrants investigation and potential drug holiday or alternative therapy.
Frequency: At each visit.
Target: Stable, without emergence or exacerbation of symptoms.
Action Threshold: Emergence of new psychotic or manic symptoms, severe anxiety, or significant tics warrants immediate evaluation and potential discontinuation.
Frequency: At each visit.
Target: Improved attention, reduced hyperactivity/impulsivity.
Action Threshold: Lack of efficacy or worsening symptoms may indicate need for dose adjustment or alternative therapy.
Symptom Monitoring
- Chest pain
- Shortness of breath
- Syncope
- Palpitations
- New or worsening tics
- Aggression
- Hostility
- New psychotic symptoms (e.g., hallucinations, delusions)
- Manic symptoms (e.g., elevated mood, decreased need for sleep, racing thoughts)
- Severe anxiety or agitation
- Unexplained weight loss
- Insomnia
- Anorexia
Special Patient Groups
Pregnancy
Methylphenidate is Pregnancy Category C. Studies in animals have shown adverse effects on the fetus, but there are no adequate and well-controlled studies in pregnant women. Use during pregnancy only if the potential benefit justifies the potential risk to the fetus.
Trimester-Specific Risks:
Lactation
Methylphenidate is excreted into breast milk. The American Academy of Pediatrics considers methylphenidate to be a drug for which the effect on the nursing infant is unknown but may be of concern. Monitor infants for irritability, poor feeding, and sleep disturbances. L3 (Moderate Risk).
Pediatric Use
Approved for ADHD in children 6 years and older. Monitor growth (height and weight) and cardiovascular parameters. Assess for emergence of psychiatric symptoms (e.g., tics, psychosis, mania). Not recommended for children under 6 years due to insufficient data on safety and efficacy.
Geriatric Use
Use with caution in elderly patients, as they may be more sensitive to the effects of stimulants, particularly cardiovascular and psychiatric adverse effects. Start with lower doses and titrate slowly. Monitor blood pressure, heart rate, and psychiatric status closely.
Clinical Information
Clinical Pearls
- Immediate-release methylphenidate has a short duration of action, requiring multiple daily doses, which can be challenging for adherence.
- Consider a 'drug holiday' (e.g., weekends or school breaks) for pediatric patients to assess baseline symptoms, minimize growth suppression, and reduce tolerance, but this should be discussed with a physician.
- Patients should be screened for pre-existing cardiac conditions and psychiatric disorders before initiating methylphenidate.
- Educate patients and caregivers about the potential for abuse and dependence.
- Food can delay absorption but does not significantly affect the total amount absorbed (AUC) for immediate-release formulations, so it can be taken with food if stomach upset occurs.
- The 5mg tablet is often used for initial titration or for fine-tuning doses in patients who are sensitive to the medication.
Alternative Therapies
- Other CNS Stimulants (e.g., Amphetamine salts (Adderall), Lisdexamfetamine (Vyvanse), Dexmethylphenidate (Focalin))
- Non-stimulants (e.g., Atomoxetine (Strattera), Guanfacine ER (Intuniv), Clonidine ER (Kapvay))
- Behavioral therapy (e.g., Cognitive Behavioral Therapy, Parent Training in Behavior Management)