Compare Singulair vs. Foradil

Head-to-head comparisons of medication uses, side effects, ratings, and more.

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Singulair (montelukast)

Prescription only

Foradil (formoterol)

Prescription only
Makes it easier to breathe.

Singulair (montelukast) has fewer side effects but doesn't work as well as some inhaled medications for asthma and allergies.

3.7/ 5 average rating with 557 reviewsforSingulair
Controls chronic obstructive pulmonary disease (COPD).

Foradil (formoterol) is good for controlling and preventing chronic obstructive pulmonary disease (COPD) symptoms, but it's not a rescue inhaler and requires a jet nebulizer machine.

Upsides
  • Although not a first-line treatment, Singulair (montelukast) can effectively help children and adults with their asthma and allergies.
  • You only need to take it once a day.
  • Available as chewable tablets or granules that you can mix with food.
  • Singulair (montelukast) has fewer side effects than inhaled medications.
  • Foradil (formoterol) works well to control chronic obstructive pulmonary disease (COPD) and can start working in as few as 5 minutes.
  • Taking Foradil (formoterol) into the lungs has fewer side effects than taking a pill by mouth.
  • Using a jet nebulizer is easier to use than a handheld inhaler, especially for children.
Downsides
  • Even as a generic, Singulair (montelukast) is still expensive.
  • May not be a good choice if you have a history of mental conditions.
  • Singulair (montelukast) can't be used as a rescue inhaler if you get an asthma attack.
  • Depending on your insurance, Foradil (formoterol) can be more expensive than medicines delivered through an inhaler.
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Used for
Dosage forms
  • Pill
  • Chewable tablet
  • Granule
  • Nebulizer solution
Price
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Reviews
557 reviews so far
66%
saidit'sworth it
47%
saiditworked well
14%
saidit'sa big hassle

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Side effects
13possible side effects
  • Headache
    18%
  • Flu
    4%
  • Stomach pain
    3%
  • Cough
    3%
  • Lack of energy
    2%
  • Fever
    2%
  • Upset stomach
    2%
  • Dental pain
    2%
  • Stomach infection
    2%
  • Dizziness
    2%
  • Stuffy nose
    2%
  • Rash
    2%
  • Abnormal liver function tests
    2%
See more detailed side effects
7possible side effects
  • Diarrhea
    5%
  • Nausea
    5%
  • Common cold symptoms
    3%
  • Dry mouth
    3%
  • Vomiting
    2%
  • Dizziness
    2%
  • Trouble sleeping
    2%
See more detailed side effects
Risks and risk factors
  • Asthma attacks
    • Exercise-induced asthma
    • Other environmental triggers
  • Aggression and agitation
  • Blood disorder
    • Recent treatment with corticosteroid medicine
    • Lowering dose of corticosteroid medicine
  • Phenylketonuria
    • Phenylketonuria (PKU)
See more detailed risks and warnings
  • Asthma-related death
  • Worsening signs of COPD
  • Heart effects
    • History of heart disease
    • Abnormal heart rhythm
    • High blood pressure
    • Using Foradil (formoterol) more than prescribed
  • Sudden-onset breathing problems
See more detailed risks and warnings