What are side effects of drinking red wine after opened?

Drinking red wine after it has been opened can have several side effects, including:

1. Headaches: Red wine contains histamine, which can cause headaches, especially in individuals who are sensitive to histamine.

2. Allergic reactions: Some individuals may experience allergic reactions to red wine, such as hives, itching, and difficulty breathing. These reactions are more common in people who have allergies to grapes, yeast, or other components of red wine.

3. Stomach upset: Red wine can irritate the stomach lining and cause symptoms such as nausea, heartburn, and abdominal pain.

4. Diarrhea: Red wine can have a laxative effect and may cause diarrhea in some individuals.

5. Worsening of asthma symptoms: Red wine can trigger or worsen asthma symptoms in individuals with asthma.

6. Interaction with medications: Red wine can interact with certain medications, such as blood thinners, antibiotics, and antidepressants. It is important to consult a doctor or pharmacist before consuming red wine if you are taking any medications.

It is important to drink red wine in moderation and to be aware of your individual response to alcohol and its potential side effects.