2013
DOI: 10.5692/clinicalneurol.53.239
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A case of hypokalemic myopathy induced by excessive drinking of a beverage containing green tea extract

Abstract: A 49-year-old man subacutely developed muscle weakness in four extremities over a few days. He had no past or family history of muscle weakness. His blood tests showed significant hypokalemia without endocrinological abnormalities. With the diagnosis of hypokalemic myopathy, potassium was administered orally, and his symptoms improved. The patient had been drinking a beverage containing green tea extract too much two weeks before the symptoms developed, in addition to taking a cold remedy for ten years. Thus, … Show more

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Cited by 4 publications
(3 citation statements)
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“…There is a report available in abstract of a 49-year-old Japanese man who developed hypokalaemic myopathy after consuming large quantities of green tea alongside chronic consumption of a cold remedy 5. This effect was attributed to caffeine, which is present in high concentrations in green tea and has been shown to induce hypokalaemia 6…”
Section: Discussionmentioning
confidence: 99%
“…There is a report available in abstract of a 49-year-old Japanese man who developed hypokalaemic myopathy after consuming large quantities of green tea alongside chronic consumption of a cold remedy 5. This effect was attributed to caffeine, which is present in high concentrations in green tea and has been shown to induce hypokalaemia 6…”
Section: Discussionmentioning
confidence: 99%
“…Vitamin K in green tea inhibits the effects of warfarin, an anticoagulant [150]. Too much GTP may cause hypokalemia leading to muscle weakness [151]. Excessive green tea caffeine may impair thyroid function [152].…”
Section: Potential Side Effects Of Green Teamentioning
confidence: 99%
“…Simptomai regresavo. Pacientas vartojo labai daug žaliosios arbatos ekstrakto, simptomai pasireiškė per dvi savaites [44]. I tipo miotoninė distrofija yra autosominė-dominantinė liga, kuriai būdingas multisisteminis pažeidimas.…”
Section: Rezultataiunclassified