Panic and nausea from drinking Americano is recommended to suspend consumption or reduce daily intake, and seek medical attention if symptoms are not relieved.
Caffeine produces a variety of systemic effects on the nervous system, cardiovascular system, endocrine system and gastrointestinal system.
Caffeine is a potent antagonist of adenosine receptors in the central and peripheral nervous system. Excessive intake of caffeine can stimulate the release of excitatory neurotransmitters, leading to increased heart rate and cardiac oxygen consumption, which is manifested as panic attacks, and it can also cause contraction of gastrointestinal smooth muscle, which can trigger nausea and vomiting.
Current research suggests that moderate consumption of coffee can reduce the mortality rate of cardiovascular disease, 2 to 4 cups per day is appropriate. However, genetic factors, age, gender, medication and other environmental exposures can alter the effect of caffeine on an individual, and it is recommended to stop or reduce the amount of coffee consumed when you feel significantly ill.
If symptoms such as panic and nausea are not relieved, it is recommended to go to a regular hospital in time.