• Olafur Orri Sturluson, Birgir Johannsson, and Helga Agusta Sigurjonsdottir.
• Department of Medicine, Landspitali University Hospital.
• Laeknabladid. 2024 Oct 1; 110 (10): 464468464-468.

AbstractA 71-year-old man came to the emergency department (ED) at Landspitali University Hospital after collapsing at his home. He had a severely decreased serum potassium concentration of 2.1 mmol/L (ref. 3,5-4,8 mmol/L), along with an influenza A infection and thigh muscle weakness. Further investigations revealed atrial fibrillation, new-onset hypertension and increased urinary excretion of potassium. Serum values of aldosterone and renin were under the limit of detection. The patient had consumed a significant amount of liquorice with marzipan, over 250g per day, in the days preceding his visit to the ED. He was subsequently diagnosed with liquorice-induced hypertension and syndome of apparent mineralocordicoid excess (pseudohyperaldosteronism). This case emphasizes the need for clinicians to be aware of the dangers of liquorice consumption.

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