There are so many different types of cold medicine that the interval between doses is completely different. Most of the cold medicines are recommended to be taken three times a day, which is twenty-four hours a day, so they need to be taken after an interval of eight hours. For example, aminophenol xanthamine granules, aminga xanthamine capsules, or aminophenol pseudomal dispersible tablets, all need to be taken at an interval of eight hours. For younger infants and children, the interval should be longer. Anti-viral drugs can also be used to treat colds, because in the early stage of colds, they are viral infections, and many anti-viral drugs need to be taken three times a day, such as Ribavirin, Budi Blue Anti-inflammatory Oral Liquid, Blue Scutellaria Oral Liquid, and Four Seasons Anti-viral Combination, which need to be taken three times a day, which means that it is more appropriate to take the medicine once at an interval of eight hours. But there are drugs for the treatment of influenza, such as Tamiflu, the interval needs to be longer, it can be taken twice a day, that is, it needs to be twelve hours apart.