Assertion: blocker's effect | /r/CapableOf | reduce their effectiveness
Facets:
value: for treating asthmatic attacks
type: PURPOSE
Source sentences:
text: If combined with adrenergic stimulating drugs used for treating asthma, for example, albuterol (Proventil, Ventolin) or pirbuterol (Maxair), the adrenergic blocking effects of labetalol may counteract the effects of the stimulating drugs and reduce their effectiveness for treating asthmatic attacks.