Disadvantages of soaking Roselle in water:

1. Aggravating the cold in the body: Roselle tea is cooler in nature. Drinking too much will aggravate the cold in the body and lead to an imbalance of cold and heat in the body.

2. Increase gastric acid secretion: Roselle contains a lot of organic acids. Drinking too much may stimulate gastric acid secretion, causing gastrointestinal discomfort symptoms such as acid reflux and stomach pain.

3. Pay attention to the way of drinking: Roselle cannot be eaten with milk or carrots, and cannot be brewed directly with boiling water. You need to pour cold water first, then soak for 3-5 minutes before drinking. No need to soak for a long time. .

Roselle is a common Chinese medicinal material, but long-term overdose or inappropriate use may cause side effects. The following are possible side effects:

1. Liver damage: Long-term consumption of large amounts of hibiscus tea may cause damage to the liver.

2. Gastrointestinal discomfort: Roselle has an astringent effect and may cause discomfort in gastrointestinal function.

3. Allergic reaction: Some people may be sensitive to Roselle, which can cause allergic reactions.

4. Drug interactions: Roselle may affect the absorption or metabolism of certain drugs, affecting the therapeutic effect.

Therefore, it is recommended to consult a doctor or Chinese medicine practitioner before using Roselle to avoid side effects.