According to the information provided, children can safely take chewable Advil (ibuprofen) without food [1]. However, it is always recommended to follow the instructions provided by a healthcare professional or those listed on the packaging.

It is important to note that the dosage for children is based on their weight, and it is crucial to administer the correct dosage to avoid overdose [1]. Overdose can result in symptoms such as nausea, vomiting, stomach pain, drowsiness, and headache [1].

Additionally, it is recommended to wait at least 4-6 hours between doses, and not to exceed the maximum daily dosage [1]. It is also advised to avoid giving Advil to children under 6 months of age unless directed by a healthcare professional [1].

It is worth noting that Advil can interact with other medications, so it is essential to inform a healthcare professional of any other medications the child is taking [1].

In summary, children can safely take chewable Advil without food, but it is crucial to follow the recommended dosage based on the child's weight and age, and to avoid overdose by waiting the recommended time between doses.

Sources:
[1] DrugPatentWatch.com. (n.d.). Ibuprofen. Retrieved from <https://www.drugpatentwatch.com/drugs/ibuprofen>.