Drinking is inevitable for work reasons and human reasons. If you happen to be allergic to alcohol, you can drink some honey water or eat some cream before drinking. Cream, in particular, can help protect the gastric mucosa and also help hangover. It is best to drink more water after drinking, which can accelerate the metabolism of the new city. If erythema is serious, you can drink some antiallergic drugs, such as chlorpheniramine, and drink a little VC before going to bed, which will help alleviate the phenomenon of erythema.
In fact, people who are allergic to alcohol, it is best to ban alcohol. If you have this gene with your parents, you will never have a chance to drink in the future.