Morning tea may have unwanted effects, warns Vietnamese source

Drinking tea immediately after waking up can have unwanted effects, according to a report on Vietnam.vn. The source does not mention specific types of tea but suggests that some varieties may not be suitable for consumption on an empty stomach. No concrete details are provided about the nature of the side effects.
It remains unclear whether it concerns traditional herbal tea, green tea or other varieties. The report emphasizes caution without providing further details on the severity or frequency of possible complaints. Readers are advised to be alert, without a direct ban or warning being issued.
It is not clear whether this warning is based on scientific research, traditional knowledge or anecdotal experiences. For those who drink tea in the morning, it may be wise to pay attention to any reactions and, if in doubt, choose a different timing.
This report is a summary based on the mentioned source and is not medical advice. Consult a doctor or pharmacist in case of complaints.