Kiss your cough goodbye, with a topical cough medicine with medicated vapors. It starts working quickly for to relieve cough symptoms. Appropriate for ages two and up, topical VapoRub is a comforting choice for sick children. Not likely to cause drowsiness or jittery side effects when used as directed. Because it is a topical cough medicine, it may be appropriate for diabetics looking for an alternative to oral cough medicines that contain sugar. For more information, ask your doctor.