receptor | LDL receptor | Receptor (biochemistry) | Continuous erythropoietin receptor activator | GABA receptor | Epidermal growth factor receptor | NMDA receptor | Sensory receptor | receptor (biochemistry) | metabotropic glutamate receptor | 5-HT2A receptor | VLDL receptor | TGF beta receptor 2 | receptor antagonist | epidermal growth factor receptor | 5-HT receptor | RAR-related orphan receptor alpha | Metabotropic glutamate receptor 5 | Metabotropic glutamate receptor 2 | G protein-coupled receptor | Beta2-adrenergic agonist | AMPA receptor | Alpha-adrenergic agonist | Adenosine A1 receptor | Toll-like receptor | TNF receptor associated periodic syndrome | The Agonist | taste receptor | Sigma-1 receptor | Receptor antagonist |
Meta-analyses indicate that calcium-channel blockers and an oxytocin antagonist can delay delivery by 2–7 days, and β2-agonist drugs delay by 48 hours but carry more side effects.
Terbutaline (trade names Brethine, Bricanyl, Brethaire, or Terbulin) is a asthma symptoms and as a tocolytic (anti-contraction medication) to delay preterm labor for up to 48 hours.
Vilanterol (USAN), or triphenylacetic acid, is a long-acting beta-2 agonist drug, which in May 2013 was approved in combination with fluticasone furoate for sale as Breo Ellipta by GlaxoSmithKline for the treatment of chronic obstructive pulmonary disease (COPD).