This is an index of side effect / adverse reaction reports (a.k.a. adverse event reports) related to Ritalin (Methylphenidate) and submitted to the FDA during the sample period of about a year. The information is not vetted and should not be considered as verified clinical evidence.
Reports by Event Outcome
All Cases (328)
Death (18)
Life Threatening Events (23)
Disability (15)
Reports by Reaction Type
Drug Ineffective (30),
Depression (21),
Suicidal Ideation (20),
Fatigue (20),
Aggression (20),
Attention Deficit / Hyperactivity Disorder (20),
Agitation (19),
Anxiety (19),
Disturbance in Attention (19),
Tremor (17),
Insomnia (17),
Somnolence (15)
Below are a few examples of reports where side effects / adverse reactions may be related to Ritalin (Methylphenidate). For a complete list or a specific selection of reports, please use the links above.
Possible Ritalin side effects in 22 year old female
Reported by a physician from Austria on 2012-08-24
Patient: 22 year old female
Reactions: Maternal Exposure During Pregnancy, Abortion
Drug(s) suspected as cause:
Ritalin
Possible Ritalin side effects in 56 year old female
Reported by a physician from France on 2012-08-21
Patient: 56 year old female
Reactions: Myalgia, Blood Creatine Phosphokinase Increased
Adverse event resulted in: disablity
Drug(s) suspected as cause:
Ritalin
Other drugs received by patient: Colchicine
Possible Ritalin side effects in 86 year old female
Reported by a consumer/non-health professional from United Kingdom on 2012-08-21
Patient: 86 year old female
Reactions: Death, Renal Impairment, Diabetes Mellitus, Dementia, Drug Administered To Patient of Inappropriate AGE, Cardiac Disorder
Adverse event resulted in: death
Drug(s) suspected as cause:
Ritalin
Possible Ritalin side effects in 29 year old female
Reported by a consumer/non-health professional from Brazil on 2012-08-20
Patient: 29 year old female
Reactions: Laziness, Wrong Technique in Drug Usage Process, Drug Ineffective, Pain, Somnolence, Depressed Mood
Drug(s) suspected as cause:
Ritalin
Indication: Distractibility
Ritalin
Dosage: 10 mg, bid
Indication: Disturbance in Attention
Ritalin LA
Dosage: 20 mg, qd
Indication: Distractibility
Ritalin LA
Dosage: 10 mg, qd
Indication: Disturbance in Attention
Other drugs received by patient: Tramadol HCL; Toradiazic
Possible Ritalin side effects in female
Reported by a physician from Denmark on 2012-08-20
Patient: female, weighing 47.0 kg (103.4 pounds)
Reactions: Sudden Cardiac Death, Tachyarrhythmia, Cardiac Hypertrophy
Adverse event resulted in: death
Drug(s) suspected as cause:
Concerta
Administration route: Oral
Indication: Attention Deficit / Hyperactivity Disorder
Start date: 2010-09-22
Ritalin
Dosage: 10 mg
Indication: Attention Deficit / Hyperactivity Disorder
Start date: 2010-08-16
Possible Ritalin side effects in female
Reported by a physician from United States on 2012-08-17
Patient: female, weighing 60.4 kg (132.8 pounds)
Reactions: Foetal Distress Syndrome, Maternal Exposure During Pregnancy
Drug(s) suspected as cause:
Provigil
Administration route: Oral
Indication: Narcolepsy
Start date: 2002-01-01
End date: 2011-01-01
Provigil
Dosage: 28.5714 milligram daily;
Administration route: Oral
Start date: 2002-01-01
End date: 2011-01-01
Ritalin
Dosage: 10 milligram daily;
Indication: Narcolepsy
Start date: 2011-01-02
Other drugs received by patient: Zyrtec; Multi-Vitamins
Possible Ritalin side effects in female
Reported by a physician from Denmark on 2012-08-16
Patient: female, weighing 47.0 kg (103.4 pounds)
Reactions: Cardiac Murmur, Tachyarrhythmia, Hypertrophic Cardiomyopathy
Adverse event resulted in: death
Drug(s) suspected as cause:
Concerta
Dosage: 36 mg, qd
Administration route: Oral
Indication: Attention Deficit / Hyperactivity Disorder
Start date: 2010-09-22
Ritalin
Dosage: 0.5 mg, qd
Administration route: Oral
Indication: Attention Deficit / Hyperactivity Disorder
Start date: 2010-08-16
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from Brazil on 2012-08-14
Patient: female, weighing 60.0 kg (132.0 pounds)
Reactions: Osteoarthritis, Arthritis
Drug(s) suspected as cause:
Ritalin
Other drugs received by patient: Glucosamine Sulfate; Alprazolam; Clogretina Sulphate; Bupropion HCL; Citalopram
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-14
Patient: female
Reactions: Confusional State, Agitation, Nightmare, Drug Ineffective, Hyperglycaemia, Rash, Toxicity To Various Agents, Convulsion, Tremor, Weight Increased, Bipolar Disorder, Chest Pain
Drug(s) suspected as cause:
Abilify
Adderall
Antidepressants
Beta Blocking Agents
Buspar
Darvocet-N 50
Daytrana
Depakote
Desyrel
Effexor
Elavil
Erythromycin
Lunesta
MAO Inhibitors
Neurontin
Pamelor
Paxil
Prozac
Reglan
Remeron
Requip
Ritalin
Seroquel
Sinequan
Skelaxin
Steroids NOS
Sumatriptan
Tegretol
Tizanidine Hydrochloride
Indication: Migraine
Tofranil
Topamax
Trileptal
Valium
Indication: Agitation
Wellbutrin
Zoloft
Zonegran
Zyprexa
Other drugs received by patient: Aspirin; Vitamin B-Complex, Other Combinations; Ensure; Caltrate +D; ONE A DAY
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from Brazil on 2012-08-10
Patient: female
Reactions: Anxiety, Agitation, School Refusal, Intentional Self-Injury, Learning Disorder
Drug(s) suspected as cause:
Ritalin
Possible Ritalin side effects in male
Reported by a consumer/non-health professional from Mexico on 2012-08-08
Patient: male
Reactions: Head Injury, Fall, Skull Fracture
Drug(s) suspected as cause:
Ritalin
Dosage: 0.5 df, daily
Ritalin
Dosage: 10 mg, daily
Indication: Attention Deficit / Hyperactivity Disorder
Start date: 2012-07-04
End date: 2012-07-10
Possible Ritalin side effects in male
Reported by a consumer/non-health professional from Brazil on 2012-08-07
Patient: male
Reactions: Diabetes Mellitus, Pain, Hypertension
Drug(s) suspected as cause:
Ritalin
Possible Ritalin side effects in 18 year old male
Reported by a health professional (non-physician/pharmacist) from United States on 2012-08-07
Patient: 18 year old male
Reactions: Product Substitution Issue, Agitation, Anger, Disturbance in Attention, Rash, Oppositional Defiant Disorder, Aggression
Drug(s) suspected as cause:
Ritalin
Other drugs received by patient: Strattera; Concerta; Seroquel
Possible Ritalin side effects in 35 year old female
Reported by a physician from Germany on 2012-08-06
Patient: 35 year old female
Reactions: Myelitis, Overdose, Thrombocytopenia
Drug(s) suspected as cause:
Ritalin
Dosage: 140 mg daily
Administration route: Oral
Ritalin
Administration route: Oral
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from Brazil on 2012-08-06
Patient: female
Reactions: Middle Insomnia, Hearing Disability, Cognitive Disorder
Drug(s) suspected as cause:
Ritalin
Possible Ritalin side effects in male
Reported by a physician from Germany on 2012-08-02
Patient: male, weighing 80.0 kg (176.0 pounds)
Reactions: Intentional Overdose, Tachycardia, Suicide Attempt, Hypertension
Drug(s) suspected as cause:
Alcohol
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Concerta
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Start date: 2012-07-23
End date: 2012-07-23
Ritalin
Administration route: Oral
Indication: Product Used FOR Unknown Indication
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from Brazil on 2012-08-01
Patient: female
Reactions: Abdominal Pain, Pain, Maternal Exposure During Pregnancy, Abortion Spontaneous, Anxiety, Cervical Discharge, Uterine Haemorrhage, Inflammation
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Ritalin
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from United States on 2012-08-01
Patient: female
Reactions: Nephrolithiasis, Cholelithiasis, Pancreatitis
Drug(s) suspected as cause:
Ritalin
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from United States on 2012-07-31
Patient: female
Reactions: Cholelithiasis, Nephrolithiasis, Pancreatitis
Drug(s) suspected as cause:
Fentanyl-100
Dosage: q72h
Fentanyl-100
Dosage: q72h
Indication: Pain in Extremity
Fentanyl-100
Dosage: q72h
Fentanyl-100
Dosage: q72h
Ritalin
Administration route: Oral
Indication: Viith Nerve Paralysis
Start date: 2011-01-01
Other drugs received by patient: Lorazepam
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from Mexico on 2012-07-31
Patient: female
Reactions: Aphasia, Muscular Weakness, Feeling Abnormal
Drug(s) suspected as cause:
Ritalin
Dosage: 10 mg, daily
Indication: Brain Injury
Start date: 1992-07-01
Ritalin
Indication: Narcolepsy
Ritalin
Indication: Perinatal Brain Damage
Other drugs received by patient: Dolo-Neurobion Forte; Omeprazole
Possible Ritalin side effects in 51 year old female
Reported by a individual with unspecified qualification from United States on 2012-07-27
Patient: 51 year old female, weighing 87.1 kg (191.6 pounds)
Reactions: Drug Dose Omission, Anxiety Disorder, Wrong Technique in Drug Usage Process, Delirium, Somnolence, Anxiety, Off Label Use, Middle Insomnia, Fatigue, Hyperphagia, Bipolar Disorder, Insomnia, Hypersomnia
Drug(s) suspected as cause:
Anti-Depressant
Ritalin
Indication: Depression
Seroquel
Administration route: Oral
Indication: Sleep Disorder
Seroquel
Administration route: Oral
Seroquel
Administration route: Oral
Seroquel
Administration route: Oral
Seroquel
Administration route: Oral
Seroquel
Administration route: Oral
Indication: Bipolar Disorder
Seroquel
Administration route: Oral
Seroquel
Administration route: Oral
Seroquel
Administration route: Oral
Indication: Insomnia
Other drugs received by patient: Generic OF Norvasc; Losartan Potassium and Hydrochlorothiazide; Garlique; Potassium Chloride; Garlique; Klonipine; Calcium with Vitamin D; Metoprolol Tartrate; Lovaza
Possible Ritalin side effects in male
Reported by a consumer/non-health professional from Brazil on 2012-07-26
Patient: male, weighing 32.0 kg (70.4 pounds)
Reactions: Affective Disorder, Depression, Tremor
Drug(s) suspected as cause:
Ritalin
Dosage: 1 df, qd
Administration route: Oral
Indication: Attention Deficit / Hyperactivity Disorder
Start date: 2011-10-01
Ritalin LA
Dosage: 1 df, qd
Administration route: Oral
Indication: Attention Deficit / Hyperactivity Disorder
Start date: 2011-10-01
Possible Ritalin side effects in female
Reported by a physician from United States on 2012-07-26
Patient: female, weighing 37.6 kg (82.8 pounds)
Reactions: Product Substitution Issue, Dysphemia
Drug(s) suspected as cause:
Ritalin
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from United States on 2012-07-26
Patient: female
Reactions: Paranoia, Depression, Delusion, Influenza Like Illness
Adverse event resulted in: hospitalization
Drug(s) suspected as cause:
Ritalin
Other drugs received by patient: Rebif
Possible Ritalin side effects in 9 year old male
Reported by a health professional (non-physician/pharmacist) from France on 2012-07-25
Patient: 9 year old male
Reactions: Mitral Valve Disease
Drug(s) suspected as cause:
Concerta
Administration route: Oral
Indication: Attention Deficit / Hyperactivity Disorder
Start date: 2011-05-01
End date: 2011-07-06
Ritalin
Administration route: Oral
Indication: Attention Deficit / Hyperactivity Disorder
Start date: 2008-01-01
End date: 2011-05-01
Other drugs received by patient: Atarax; Risperdal
Possible Ritalin side effects in 11 year old male
Reported by a physician from Greece on 2012-07-25
Patient: 11 year old male
Reactions: Peripheral Coldness, Dyskinesia, Blood Sodium Decreased, Hyperhidrosis
Drug(s) suspected as cause:
Ritalin
Dosage: 5 mg, unk
Ritalin
Dosage: unk ukn, unk
Possible Ritalin side effects in male
Reported by a consumer/non-health professional from Germany on 2012-07-25
Patient: male
Reactions: Parkinson's Disease
Drug(s) suspected as cause:
Ritalin
Possible Ritalin side effects in 29 year old female
Reported by a consumer/non-health professional from Brazil on 2012-07-24
Patient: 29 year old female
Reactions: Laziness, Wrong Technique in Drug Usage Process, Drug Ineffective, Pain, Somnolence, Depressed Mood
Drug(s) suspected as cause:
Ritalin
Dosage: 10 mg, bid
Indication: Disturbance in Attention
Ritalin
Indication: Distractibility
Ritalin LA
Dosage: 10 mg, qd
Indication: Disturbance in Attention
Ritalin LA
Dosage: 20 mg, qd
Indication: Distractibility
Other drugs received by patient: Toradiazic; Tramadol Hydrochloride
Possible Ritalin side effects in female
Reported by a consumer/non-health professional from Brazil on 2012-07-24
Patient: female, weighing 42.0 kg (92.4 pounds)
Reactions: Mood Altered, Sacroiliitis, Pyrexia, Dengue Fever
Drug(s) suspected as cause:
Ritalin
Dosage: 10 mg, daily
Administration route: Oral
Indication: Attention Deficit / Hyperactivity Disorder
Ritalin
Dosage: 10 mg, bid
Administration route: Oral
Start date: 2012-01-01
Ritalin LA
Dosage: 30 mg, daily
Administration route: Oral
Indication: Attention Deficit / Hyperactivity Disorder
Possible Ritalin side effects in 20 year old male
Reported by a physician from United States on 2012-07-23
Patient: 20 year old male
Reactions: Mental Impairment
Adverse event resulted in: disablity
Drug(s) suspected as cause:
Ritalin
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