I'm on dulera (formoterol and mometasone). why do labas cause increased risk of death from asthma? not sure if its worth taking.

Dulera (formoterol and mometasone): Combination products that contain a steroid and a long acting bronchodilator (advair / symbicort (budesonide and formoterol) / dulera) might pose a slight risk for causing a heart rhythm problems however; if prescribed to the correct patient for the correct severity of asthma, the risk of not taking these medications and dying from uncontrolled asthma is probably higher than any risk from taking these medications.

See below: So the long acting drugs cause an increased risk of death because if they are occupying the beta receptors and then you start having trouble breathing - as in a asthma attack, the short active inhaler will not have any receptors to bind to, thus they won't work. With that said, I would still take them, just know that there could be problems. The LABAs work very well.