Compare Singulair vs. Theophylline

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

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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.

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3.7/ 5 average rating with 557 reviewsforSingulair
No information currently available
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.
No information currently available
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.
No information currently available
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Used for
  • Asthma Chronic obstructive pulmonary disease Exercise-induced asthma; Prophylaxis Nocturnal asthma
  • Apnea in the newborn; Adjunct Nocturnal asthma
Dosage forms
  • Pill
  • Chewable tablet
  • Granule
  • Pill
  • Extended release
  • Liquid
Price
Lowest price
$10.99
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Lowest price
$75.19
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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
The Theo-24 (Theophylline) FDA package insert doesn’t have numbers about how common side effects are.
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
No information currently available
Learn more about Singulair (montelukast)
Learn more about Theo-24 (Theophylline)