Singulair is available as tablets and chewable tablets. Singulair also comes as packets of granules, which can be administered to a child directly by spoon or mixed in with breast milk, formula, or soft food. It is important that the only soft foods that Singulair is mixed with are applesauce, carrots, rice, or ice cream. Use Singulair oral granules within 15 minutes after opening the packet. The food should be room temperature or colder. Throw away any uneaten portion.