Will anything happen to my child if he or she takes Singulair 5 15 minutes after a meal?

In the case described by you, the bioavailability of the drug may be reduced, so less of the drug will get from the gastrointestinal tract into the blood, which may weaken the effect of the drug. However, this should not affect the effectiveness of treatment. However, please remember to use the medicine in accordance with the recommendations in the Summary of Product Characteristics - the drug should be taken 1 hour before or 2 hours after a meal to maintain its full effect. You can find an extension of the thread on the effect of food on the absorption of Singulair containing montelukast at the following link: https://www.gdziepolek.pl/opinie-i-pytania/22376/singulair-czy-montelukast-w-tabletkach-do-rozgryzania-i-zucia-nalezy-podawac-2-godziny-po-posilku The information contained in the following entry on the use of medicines with food may also be useful: https://www.gdziepolek.pl/artykuly/jak-laczyc-leki-z-jedzeniem