Why Your Patient’s Sleep Medication Might Be The Actual Problem

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-Simon

Leg-endary advice for your next RLS patient

Insomnia is never just insomnia, and if your review of systems includes an irresistible urge to move the limbs, a 2026 review in the Journal of the American Medical Association provides some useful updates.

Restless Leg Disorder affects 3% of adult patients and carries real risks beyond the lower limbs: cardiovascular disease, depression, and even suicide.

Diagnosis is purely clinical, so skip the sleep study. Instead, focus on identifying specific underlying triggers. Iron indices are the priority here:

• Check serum ferritin and transferrin saturation for all patients

• Discontinue triggering medications including dopamine antagonists, serotonergic antidepressants, and antihistamines

• Initiate iron supplementation if ferritin is low

• Consider treatment for transferrin saturation below twenty percent

  
  

We have seen a major shift in how we manage these patients. Dopamine agonists caused trouble. The new protocol is straightforward:

• Gabapentinoids: (e.g. Gabapentin, pregabalin) - First-line pharmacologic therapy

• Dopamine agonists: (e.g. ropinirole, pramipexole, rotigotine) - Avoid as first-line due to augmentation risk

• Low-dose opioids: (e.g. methadone 5-10 mg daily) - Reserve for treatment-refractory patients

  
  

Memory Tip

When you are preparing for the MCQ-SAMPs, remember that dopamine agonists are no longer the go-to. If you see a question about a patient on ropinirole or pramipexole who is getting worse, think about these as the cause and not the treatment.

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