Compare Singulair vs. Theophylline

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

Prevents breathing problems.

Singulair (Montelukast) has fewer side effects but doesn't work as well as steroid inhalers for asthma. It also helps with allergies.

3.7/ 5 average rating with 557 reviewsforSingulair
No information currently available
Upsides
  • Prevents symptoms and improves lung function in children and adults with chronic asthma.
  • A single 10 mg dose improves exercise-induced asthma symptoms for up to 24 hours.
  • Fewer side effects compared to other asthma treatments.
  • Also relieves nasal allergy symptoms.
  • Effective pill alternative to corticosteroid inhalers.
No information currently available
Downsides
  • You have to use Montelukast every day to control your symptoms.
  • Somewhat less effective than corticosteroid inhalers for asthma.
  • There's no generic available, so it can be expensive.
  • Can cause behavior changes, agitation, aggression, and difficulty sleeping for some people.
No information currently available
Used for
  • Asthma Chronic obstructive pulmonary disease Exercise-induced asthma; Prophylaxis Nocturnal asthma
Dosage forms
  • Pill
  • Chewable tablet
  • Granule
  • Pill
  • Extended release
  • Liquid
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
14possible side effects
  • Headache
    18%
  • Influenza
    4%
  • Pain, abdominal
    3%
  • Cough
    3%
  • Asthenia/fatigue
    2%
  • Fever
    2%
  • Dyspepsia
    2%
  • Pain, dental
    2%
  • Gastroenteritis, infectious
    2%
  • Dizziness
    2%
  • Congestion, nasal
    2%
  • Rash
    2%
  • ALT increased
    2%
  • AST increased
    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
  • Sudden onset of asthma
    • Exercise-induced asthma
    • Other environmental triggers
  • Aggression and agitation
  • Blood disorder (eosinophilia)
    • Recent treatment with corticosteroid medication
    • Lowering dose of corticosteroid medication
  • Brain damage from too much phenylalanine
    • History of phenylketonuria (PKU)
  • Liver damage
    • History of liver disease including hepatitis
    • history of alcohol use
    • Other medications that cause liver injury
See more detailed risks and warnings
No information currently available