An ADHD Dietitian On How to Manage Side Effects of Medication


Living with ADHD can present various challenges, and there is often a choice between lifestyle changes or medication to cope well with ADHD, and some people choose both. There is no one right way for everyone, it’s a personal decision. In this blog we will discuss common ADHD medications and their side effects. As an ‘ADHD Dietitian’ aka a Mental Health Dietitian,  I commonly support people to ensure they remain physically well while dealing with the side effects of ADHD medication.


Understanding ADHD Medication and Its Side Effects


The most prescribed medications for ADHD include stimulants like methylphenidate (Ritalin/Concerta) and amphetamine-based drugs. While these medications can improve focus, attention, and impulse control, they may also have side effects that impact nutritional status, weight and overall health.


Common Side Effects


One of the main concerns is the effect on weight. It can be common for individuals to experience appetite suppression or changes in metabolism, which can lead to weight loss. Additionally, stimulant medications can sometimes cause gastrointestinal issues like nausea, constipation, or stomach pain.


Minimising Side Effects


As a dietitian, I often work with individuals to mitigate the impact of ADHD medication on their nutritional status. Here are some practical tips:


  • Frequent Eating: Rather than sticking to three large meals, aim for smaller, more frequent meals and snacks throughout the day to maintain energy levels and prevent extreme hunger.
  • Stay Hydrated: Drinking plenty of fluids is essential, especially if medication side effects include increased thirst or constipation. Dehydration can also worsen executive dysfunction.
  • Set Reminders to Eat: ADHD medication can sometimes dampen appetite cues, so setting reminders to eat can help ensure regular nourishment.
  • Social eating: Eating with others can normalise the behaviour and act as encouragement.
  • Establish Healthy Routines: Building good habits around mealtimes can make it easier to prioritise nutrition, especially when dealing with ADHD symptoms.
  • Monitor Weight and Physical Health: Regularly monitoring weight and overall physical health with the guidance of a healthcare professional can help identify any concerning changes early on.
  • Seek Support from a Dietitian. If the medication is seriously impacting your eating, it is a good idea to work with a dietitian to support you to meet your nutritional requirements.



If you enjoyed this blog, you can get our blogs and educational newsletter straight to your inbox. No spam, only a short education read every Friday morning. Sign up here:



We are here to help


If you feel that this topic personally resonates with you, and you need some support in this area then we are here to help. We are a team of specialist dietitians in mental health and eating disorders. We would love to support you to be your best and healthiest version, and to meet your personal goals. Send us a message here. Or find out more about us here


Blog written by Sophie


Sophie is a Specialist Eating Disorder Dietitian passionate about delivering great quality care and advocating for her clients. She is naturally curious and driven for continued learning both within the profession and outside of it. Sophie founded Mental Health Dietitians in 2024 to be able to work in a way that is value-aligned and makes a difference to the individuals in her care, as well as the wider profession. She currently supports international clients 1-1 in her online clinic.