Final answer:
Cough preparations should generally not be taken by children under the age of 6. Their effectiveness is questionable, and it's important to consult with a healthcare professional before taking any medication.
Step-by-step explanation:
Cough preparations, such as cough medicines, should generally not be taken by children under the age of 6. According to the American Academy of Pediatrics, cough medicines are not effective in treating coughs in young children and can have potential side effects. For children older than 6 and adults, cough preparations can be taken, but it's important to note that their effectiveness is questionable. It's always best to consult with a healthcare professional before taking any medication.