Is dha bought in a drugstore or a maternal and child store?

Both will do. According to 39 Health Network, DHA is a kind of health care product, not a medicine, which has no obvious therapeutic and pharmaceutical effects, and can be bought in pregnant and baby shops or pharmacies. DHA, commonly known as "brain gold" and docosahexaenoic acid, is the main element to promote and maintain the growth of nervous system cells. It is an important part of the brain and retina, and has the functions of promoting the development of nerve cells and enhancing memory.