Find patient medical information for Montelukast (Singulair) on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings
Montelukast crosses the placenta into the fetus following oral administration to animals, but there have been no adequate studies in pregnant women to determine the effects on the fetus. Physicians may prescribe zafirlukast duringpregnancyif it is felt that its benefits outweigh the potential but unk...
Side Effects of Singulair Singulair can cause mild side effects, and it can also cause serious ones. These are the common side effects, which often go away on their own. If these are severe or don’t go away, tell your doctor. If you’re having any uncomfortable symptoms that aren’t ...