You can’t drink beer after taking cold medicine, it’s easy to have some reaction with beer, for example, the main ingredient in cold medicine is acetaminophen and paracetamol. Acetaminophen belongs to the non-steroidal anti-inflammatory drugs, easy to produce some damage to the gastric mucosa of the beer in the alcohol for the gastric mucosa will produce some damage, this time if you eat a cold medicine and then drink a beer, for the gastric damage is more serious, and will even cause acute gastritis or bleeding situation. Secondly, there is a lot of paracetamol in cold medicine, paracetamol for the relief of nasal congestion, runny nose and mild sore throat, the effect is better, and has a central inhibition, easy to make people sleepy phenomenon. Alcohol has a significant inhibitory effect on the central nervous system, if taken together with cold medicine will aggravate the inhibitory effect of the central nervous system, and even the phenomenon of lethargy will occur, for the human body’s nervous system is relatively large. Therefore, cold medicine and beer can never be taken together, generally speaking, it is safer to drink after 72 hours of stopping cold medicine.