Caffeine Intoxication in Which the Theophylline Level Served as an Indicator of the Treatment Course and the Caffeine Level Could Be Measured

We thank the authors for their interest in our article and thoughtful comments.Just as you have said, caffeine can be consumed daily, and it seems that the consumption of caffeinated beverages by young people, especially athletes and healthcare workers, is indeed increasing.Athletes in particular may be motivated by factors such as increased energy and improved performance, while healthcare workers may be influenced by long and irregular working hours and demanding nature.Although moderate caffeine intake is generally considered safe for most people, its excessive intake can lead to addiction.Symptoms of poisoning are wide-ranging and include effects on the central nervous system, circulatory system, respiratory system, digestive system, renal endocrine system, and skeletal muscle system.In severe cases, symptoms include headaches, insomnia, nausea, arrhythmia, and convulsions, which can be fatal.Therefore, we would like to spread awareness about the possibility of caffeine poisoning from drinking water containing caffeine and the symptoms of poisoning.If caffeine poisoning is suspected, it is important to determine the amount ingested.Measuring caffeine and theophylline concentrations is a very effective tool for the management and treatment of patients with addiction and for verifying the effectiveness of treatment.

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Publication Details

Journal
Internal Medicine
Published
2025-02-21
DOI
https://doi.org/10.2169/internalmedicine.4997-24
Citations
1
Primary Topic
Coffee research and impacts
Type
article
Field-Weighted Citation Impact
1.39
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article

Caffeine Intoxication in Which the Theophylline Level Served as an Indicator of the Treatment Course and the Caffeine Level Could Be Measured

Makoto Arashiyama, Mitsuko Inuyama, Shinya Orihara, Nanako Inoue et al.
1 citations
Internal Medicine
Coffee research and impacts
1.39
article

Caffeine Intoxication in Which the Theophylline Level Served as an Indicator of the Treatment Course and the Caffeine Level Could Be Measured

Makoto Arashiyama, Mitsuko Inuyama, Shinya Orihara, Nanako Inoue, Chika Hasegawa, Nobuyuki Oba, Shuta Nishinakagawa, Hideki Nagumo, Naoyuki Yoshimine, Shintaro Takahashi
article en
1 citations

Abstract

We thank the authors for their interest in our article and thoughtful comments.Just as you have said, caffeine can be consumed daily, and it seems that the consumption of caffeinated beverages by young people, especially athletes and healthcare workers, is indeed increasing.Athletes in particular may be motivated by factors such as increased energy and improved performance, while healthcare workers may be influenced by long and irregular working hours and demanding nature.Although moderate caffeine intake is generally considered safe for most people, its excessive intake can lead to addiction.Symptoms of poisoning are wide-ranging and include effects on the central nervous system, circulatory system, respiratory system, digestive system, renal endocrine system, and skeletal muscle system.In severe cases, symptoms include headaches, insomnia, nausea, arrhythmia, and convulsions, which can be fatal.Therefore, we would like to spread awareness about the possibility of caffeine poisoning from drinking water containing caffeine and the symptoms of poisoning.If caffeine poisoning is suspected, it is important to determine the amount ingested.Measuring caffeine and theophylline concentrations is a very effective tool for the management and treatment of patients with addiction and for verifying the effectiveness of treatment.

Internal MedicineVol. 64(16)
Toho University (JP), Japan Organization of Occupational Health and Safety (JP), Tokyo Rosai Hospital (JP)
Openalex Percentile: Top 23%
Coffee research and impacts
1.39
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Caffeine Intoxication in Which the Theophylline Level Served as an Indicator of the Treatment Course and the Caffeine Level Could Be Measured — Makoto Arashiyama, Mitsuko Inuyama, et al. · Internal Medicine (2025) | TGRS Research Map | TGRS