There are no clear rules on when to take DHA, but it is usually recommended to take it about half an hour after breakfast, as that time period is conducive to its absorption. DHA is one of the important substances for human brain development, which can promote the growth and maturation of neurological cells, and is an important nutrient to help infants’ brain, nerve and visual cell development. Since the body cannot synthesize DHA on its own, it needs to be supplemented from outside. When supplementing DHA, it should be noted that as an unsaturated fatty acid, it is not easily absorbed by the body when taken on an empty stomach, so it is recommended that patients take it half an hour after breakfast, and also to avoid stimulation of the gastrointestinal tract. In short, it is recommended that patients should take the supplement under the guidance of professional doctors, and should not blindly use the medicine or increase the dosage, so as not to affect the normal growth and development. During the period of taking DHA, patients should pay attention to ensure sufficient sleep, diversified diet, avoid spicy and stimulating food, and eat more food rich in protein and vitamins. Avoid picky eating and partial eating, and keep a happy mood.