What you want to ask is why it's cold and hot after drinking Kyoto Nianci 'an. Drug allergy, viral cold.

1. According to the inquiry in official website, the patient is allergic to a certain component of Nianci Temple in Kyoto, which will lead to the overreaction of the human immune system and the symptoms of hot and cold.

The patient has a viral cold. During taking Nianci 'an in Kyoto, the virus will stimulate the human immune system, leading to cold and fever symptoms.