You should not drink red wine when you have a cold because red wine contains alcohol, which can be a burden to the liver or other organs of the body. When there are no obvious complications and the symptoms are not too serious, drinking alcohol may not have a big impact and will not significantly increase the course of the cold or increase the symptoms of the cold. However, when complications arise, such as inflammation of the liver, drinking 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 at this time. In addition, myocarditis may occur when you have a cold, and the intake of alcohol may have an adverse effect on the course of myocarditis, and may even aggravate it. So overall you can’t drink red wine when you have a cold. Even if you drink a small amount of alcohol and you don’t feel any abnormalities, the superposition of these two factors in your body is likely to cause irreversible or serious effects on some of your organs.