<unk>  is a selective β2 adrenergic receptor agonist used in the treatment of asthma.<unk>  is also used in some countries (such as Russia and Switzerland) as a tocolytic agent (i.e., labor suppressant), with the most common trade name being Gynipral. It is not approved by the United States Food and Drug Administration.
Hexoprenaline
Isoprenaline
Nadolol
Orciprenaline
Betaxolol
Oxprenolol
Stanozolol
Nicergoline