You can drink collagen for cold, it does not affect the cold, its mainly because the body’s immunity is reduced by viruses, bacteria, mycoplasma, chlamydia, rickettsia and other pathogens invasion, can make the upper respiratory tract mucosa, there is more obvious congestion, edema, inflammatory substances exuding inflammatory reaction, the body’s resistance is poor. And collagen is a special type of protein, mainly biopolymers, which contains the main distribution in the connective tissue of the body of humans and animals. The proteins of collagen are also beneficial to the body, enhancing the activity of the body’s cells, so it is beneficial to fight pathogens such as cold and flu viruses.