AsthmaMar 15, 2026
About half of severe asthma cases share a single underlying driver: too many eosinophils, a type of white blood cell that floods the airways, fuels relentless inflammation, and doesn't respond well to standard inhalers. This subtype, called eosinophilic asthma, is now one of the clearest success stories in precision medicine. A simple blood test can flag it, and targeted biologic drugs can dramatically reduce flare-ups, improve lung function, and even make long-term remission a realistic goal.
The catch? Many people with poorly controlled asthma still haven't been tested for it. If your asthma developed in adulthood, resists high-dose inhalers, or comes with nasal polyps, this is worth understanding.
Respiratory HealthMar 15, 2026
For years, a real concern hung over this drug: could adding a long-acting bronchodilator to an inhaled steroid increase the risk of serious asthma events? Large randomized controlled trials in adolescents and adults have now answered that clearly. Fluticasone salmeterol does not raise the risk of asthma-related deaths, intubations, or hospitalizations compared to fluticasone alone. What it does is reduce severe exacerbations by roughly 20 to 21%.
In COPD, the picture is more complicated. The symptom benefits hold up, but fluticasone salmeterol consistently increases pneumonia risk. Same drug, meaningfully different risk profiles depending on the disease being treated.
AsthmaMar 13, 2026
Fluticasone propionate is one of the most potent inhaled corticosteroids available, and less than 1% of each dose makes it past your lungs into the rest of your body. That's a feature, not a bug. It means strong local anti-inflammatory action with minimal systemic side effects. But that same intense local potency creates a split personality: in asthma, it's a highly effective controller. In COPD, it helps with symptoms but raises a real pneumonia risk that other inhaled steroids don't seem to carry to the same degree.
Understanding where fluticasone shines and where it gets complicated is the difference between using it well and using it blindly.
