Side Effects of singulair/montelukast sodium

Get emergency medical help if you have any of the following signs of an allergic reaction to Singulair/Montelukast Sodium:

  • hives
  • difficulty breathing
  • swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • unusual changes in mood or behavior;
  • skin rash, bruising, severe tingling, numbness, pain, muscle weakness;
  • ear pain, swelling, or warmth; or
  • severe skin reaction–fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.

Common side effects may include:

  • stomach pain, diarrhea;
  • fever or other flu symptoms;
  • cold symptoms such as stuffy nose, sinus pain, cough, sore throat;
  • headache; or bed-wetting or loss of bladder control in children.


Interactions of singulair/montelukast sodium

Pregnancy Warnings of singulair/montelukast sodium



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