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What are the potential side effects of medications targeting impulsivity? 

PostedAugust 27, 2025
UpdatedSeptember 5, 2025
ByMy Patient Advice

Medication side effects of impulsivity are an important consideration when treating ADHD, especially for individuals who struggle with impulsive behaviours. While medications targeting impulsiveness can be highly effective in managing ADHD symptoms, they may also come with potential adverse effects. Understanding these risks can help individuals and healthcare providers make informed decisions about treatment and manage potential side effects effectively. 

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Potential Side Effects of Medications for Impulsivity 

Medications used to manage impulsivity in ADHD can have varying side effects depending on whether they are stimulants or non-stimulants. Here’s a breakdown of the most common adverse effects associated with these treatments: 

Stimulant Medications 

Stimulants are the most commonly prescribed medications for ADHD and are highly effective in managing impulsivity. However, they can cause side effects such as: 

  • Insomnia: Many stimulant medications, like methylphenidate (Ritalin) and amphetamines (Adderall), can cause sleep disturbances, leading to insomnia and difficulty falling asleep. 
  • Appetite Suppression: Stimulants can reduce appetite, which may lead to weight loss or poor nutrition in some individuals. 
  • Increased Heart Rate: Some people may experience an increased heart rate or blood pressure, which could be concerning for individuals with pre-existing heart conditions. 
  • Mood Swings or Anxiety: In some cases, stimulant medications may cause heightened anxiety, irritability, or mood swings, particularly at higher doses. 

Non-Stimulant Medications 

Non-stimulant medications like atomoxetine (Strattera) and guanfacine (Intuniv) are alternatives for managing impulsivity in ADHD. While they tend to have fewer side effects than stimulants, they still carry some risks: 

  • Fatigue or Drowsiness: Non-stimulant medications can cause drowsiness, which may interfere with daily activities or work performance. 
  • Gastrointestinal Issues: Atomoxetine has been linked to stomach upset, nausea, and decreased appetite, particularly when starting the medication. 
  • Mood Changes: Some individuals may experience changes in mood, including depression or irritability, while taking non-stimulant medications. 

In conclusion, while medication side effects of impulsivity can significantly improve focus and control impulsiveness, it’s essential to be aware of the potential adverse effects. Whether using stimulants or non-stimulants, understanding these treatment risks and ongoing communication with a healthcare provider can help manage side effects and optimise treatment. 

Visit providers like ADHD Certify for personal consultations and expert guidance tailored to your unique situation. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Impulsivity in ADHD.  

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Avery Lombardi, MSc, author for my patient advice - mypatientadvice.co.uk

Avery Lombardi, MSc

Author

Avery Lombardi is a clinical psychologist with a Master’s in Clinical Psychology and a Bachelor’s in Psychology. She has professional experience in psychological assessment, evidence-based therapy, and research, working with both child and adult populations. Avery has provided clinical services in hospital, educational, and community settings, delivering interventions such as CBT, DBT, and tailored treatment plans for conditions including anxiety, depression, and developmental disorders. She has also contributed to research on self-stigma, self-esteem, and medication adherence in psychotic patients, and has created educational content on ADHD, treatment options, and daily coping strategies.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy. 

Dr. Rebecca Fernandez, MBBS, author and a reviewer for my patient advice - mypatientadvice.co.uk

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy. 

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