Whether or not a cold medicine can be taken with cold water can be decided according to the labeling on the instructions of the medicine, and those who do not specify the method of taking the medicine default to cold water.
Before taking all kinds of medicines, you should check the instructions carefully, and the places that need special attention when taking medicines will be clearly labeled.
Regarding the need for cold medicine to be taken with cool water, you can check whether there is a clear indication on the instruction manual that the medicine needs to be taken with boiled or lukewarm water, and if there is no clear indication, it is assumed that water of any temperature can be taken.
For example, drugs such as cold and flu medicine and cold and flu medicine need to be taken with boiled water, and it is generally not recommended to take them with cooled boiled water; summer and wet cold and flu medicine and other drugs that are not clearly labeled with the method of taking them can be taken with boiled or cooled boiled water.
Specific medication should be taken under the guidance of a specialist.