Therapy with nifedipine in asthma: a randomized double-blind crossover trial

Area of Science:

• Pulmonology
• Clinical Pharmacology

Background:

• Asthma management remains a challenge.
• Nifedipine, a calcium channel blocker, has been explored for respiratory conditions.

Purpose of the Study:

• To evaluate the efficacy of low-dose oral nifedipine in managing asthma symptoms.
• To assess nifedipine's impact on bronchial tone and lung function in asthmatic patients.

Main Methods:

• A randomized, double-blind, crossover trial was conducted.
• Eleven asthma patients received nifedipine (10 mg four times daily) or placebo for two weeks.
• Symptom scores, drug intake, and peak expiratory flow rates were analyzed.

Main Results:

• A statistically significant, yet mild, improvement in symptom scores was observed during the nifedipine period (P < 0.05).
• Peak expiratory flow rates and drug intake remained unchanged, indicating no significant impact on baseline bronchial tone.
• Nifedipine may have attenuated exacerbations from environmental triggers.

Conclusions:

• Low-dose oral nifedipine provides minimal therapeutic benefit in asthma treatment.
• The drug's effect on baseline bronchial tone is negligible.
• Further research may explore nifedipine's role in specific asthma exacerbation scenarios.