my son is 3 + which brain syrup is useful for brain development, memory concentration and limit agression

A. There is no such brain syrup required if you give proper diet to the child avoid sugary and specially junk food which has become common these days and avoid screen time your child’s brain is generally going to be very strong because when you give these distractions and trash to the child to eat or watch that is what leads to downgrade of brain nothing else