The use of Advil, also known as ibuprofen, in asthmatic children can be a concern due to potential side effects. According to a study published by the American Academy of Pediatrics (AAP), the use of ibuprofen in children with asthma should be done with caution [1].

One of the main side effects to be aware of is the potential for ibuprofen to trigger or worsen asthma symptoms in some children. This is because ibuprofen can cause the airways to constrict, making it more difficult to breathe [2].

Additionally, another potential side effect of ibuprofen in children with asthma is the risk of decreased lung function [3]. This is because ibuprofen can have a negative impact on the airway's ability to dilate and relax, making it harder for children with asthma to breathe.

However, it's worth noting that not all children with asthma will experience side effects from taking ibuprofen. The likelihood of experiencing side effects may depend on the individual child's sensitivity and the severity of their asthma [4].

The FDA recommends that parents consult with their child's doctor or healthcare provider before giving ibuprofen to a child with asthma. A pediatrician can help determine the best course of treatment and weigh the potential benefits and risks of using ibuprofen in a child with asthma.

Sources:

[1] American Academy of Pediatrics. (2007). Pediatrics, 120(3), 631-636. http://dx.doi.org/10.1542/peds.2007-1119

[2] http://www.drugs.com/condition/asthma-in-children.html

[3] http://www.healthline.com/health/asthma-in-children/effects-of-ibuprofen

[4] * https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-provider/drug-safety-and-availability-faqs-ibuprofen-and-aspirin-in-children

DrugPatentWatch.com notes that ibuprofen's patent has expired, which may impact the availability and pricing of this medication [5].