Singulair is used for:

Prevention and long-term treatment of asthma. It is also used to relieve allergy symptoms. It may also be used for other conditions as determined by your doctor.Singulair is a leukotriene receptor antagonist. It works by blocking a substance called leukotriene, which helps to decrease certain asthma and allergy symptoms.

How to use Singulair:

Use Singulair as directed by your doctor. Check the label on the medicine for exact dosing instructions. Check the label on the medicine for exact dosing instructions.

• An extra patient leaflet is available with Singulair . Talk to your pharmacist if you have questions about this information.
• Singulair may be taken with or without food.
• Continue to use Singulair even if you feel well. Do not miss any doses.
• If you miss a dose of Singulair , take it as soon as possible. If it is almost time for your next dose, skip the missed dose. Go back to your regular dosing schedule. Do not take 2 doses at once.

Ask your health care provider any questions you may have about how to use Singulair.

Possible side effects of Singulair:

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

• Cough; dizziness; headache; indigestion; nausea; stomach upset or pain; stuffy nose; tiredness; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur:

• Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); aggressive behavior; agitation; dark urine; fever; flu-like symptoms; hallucinations; irregular heartbeat; new or worsening wheezing or other breathing problems; numbness or tingling of hands or feet; seizures; severe or persistent stomach pain; severe sinus inflammation; swelling; unusual bruising or bleeding; upper respiratory tract infection; yellowing of the skin or eyes.

This is not a complete list of all side effects that may occur. If you have questions or need medical advice about side effects, contact your doctor or health care provider.

Proper storage of Singulair:

Store Singulair at 77 degrees F (25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Singulair out of the reach of children and away from pets.