Review: could Ritalin cause Aggression?


Aggression is found among people who take Ritalin, especially for people who are male, 10-19 old , have been taking the drug for < 1 month, also take medication Concerta, and have Attention deficit/hyperactivity disorder . We study 9,659 people who have side effects while taking Ritalin from FDA and social media. Among them, 357 have Aggression. Find out below who they are, when they have Aggression and more.

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Ritalin has active ingredients of methylphenidate hydrochloride. It is often used in attention deficit hyperactivity disorder. (latest outcomes from Ritalin 12,382 users)


Aggression has been reported by people with fever, agitation, weakness, drowsiness, fatigue (latest reports from 31,640 Aggression patients).

On Aug, 25, 2016

9,659 people reported to have side effects when taking Ritalin.
Among them, 357 people (3.7%) have Aggression

Number of reports submitted per year:

Could Ritalin cause Aggression?

Time on Ritalin when people have Aggression *:

  • < 1 month: 28 %
  • 1 - 6 months: 18 %
  • 6 - 12 months: 12 %
  • 1 - 2 years: 16 %
  • 2 - 5 years: 16 %
  • 5 - 10 years: 4 %
  • 10+ years: 6 %

Gender of people who have Aggression when taking Ritalin *:

  • female: 18 %
  • male: 82 %

Age of people who have Aggression when taking Ritalin *:

  • 0-1: 3.1 %
  • 2-9: 33.79 %
  • 10-19: 36.21 %
  • 20-29: 6.9 %
  • 30-39: 8.28 %
  • 40-49: 6.21 %
  • 50-59: 3.79 %
  • 60+: 1.72 %

Severity if Aggression when taking Ritalin **:

  • least: 0.0 %
  • moderate: 100 %
  • severe: 0.0 %
  • most severe: 0.0 %

Top conditions involved for these people *:

  • Attention Deficit/hyperactivity Disorder (123 people)
  • Depression (34 people)
  • Bipolar Disorder (15 people)
  • Anxiety (13 people)
  • Psychomotor Hyperactivity (10 people)

Top co-used drugs for these people *:

  • Concerta (49 people)
  • Paxil (44 people)
  • Risperdal (39 people)
  • Strattera (32 people)
  • Seroquel (30 people)

* Approximation only. Some reports may have incomplete information.

** Reports from social media are used.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

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