Final answer:
Acetaminophen should not be taken for a hangover as it increases the risk of liver damage, especially if alcohol has recently been consumed.
Step-by-step explanation:
The drug that you should never take for a hangover is Acetaminophen.
Acetaminophen, also known as paracetamol in some countries, when mixed with alcohol can increase the risk of liver damage. Those who consume three or more alcoholic beverages a day are at a higher risk when using medicines that contain acetaminophen. It is also important to note that taking a higher dose than recommended of acetaminophen will not provide more relief and can, in fact, be dangerous for both adults and children.
Other non-steroidal anti-inflammatory drugs (NSAIDs) like aspirin, ibuprofen, or naproxen are comparatively safer options for relief from hangover symptoms, but they should be used cautiously and according to the recommended dosages.