You should not drink red wine when you have a cold, because red wine contains alcohol, which can cause a certain burden on the human liver or other organs. When the cold does not have obvious complications and the symptoms are not too serious, drinking alcohol may not have a big effect, and will not significantly increase the duration of the cold or increase the symptoms of the cold. However, when the cold has complications, such as inflammation of the liver, drinking alcohol at this time will increase the burden on the liver, and the inflammation of the liver may be aggravated, so it is best not to drink alcohol at this time. In addition, myocarditis may also occur when you have a cold, and alcohol intake has a negative effect on the course of myocarditis, and may even aggravate it. So overall it is not possible to drink red wine when you have a cold, even if you drink a small amount of alcohol and you do not feel any relevant abnormality, it is very likely that the combination of these two factors in the body will cause irreversible or serious effects on some of your organs.