"Ritodrina"@en . "Humans and other mammals"@en . . . . "1.7-2.6 hours"@en . . . . . . " "@en . . "Naoki Yamazaki, Yoshimasa Fukuda, Yoshiaki Shibazaki, Tetsutarou Niizato, Isao Kosugi, Shin Yoshioka, \"(-)-ritodrine, therapeutic compositions and use, and method of preparation.\" U.S. Patent US5449694, issued July, 1992."@en . . . . . . . . . . . . . . "Ritodrine"@en . . . . "DU-21220"@en . . . . . . . "LD₅₀=64mg/kg (mice, IV); LD₅₀=540 mg/kg (mice, oral); LD₅₀=85 mg/kg (rat, IV)"@en . . . "~56%"@en . . . . " "@en . . . . "approved"@en . . . "Ritodrine is beta-2 adrenergic agonist. It binds to beta-2 adrenergic receptors on outer membrane of myometrial cell, activates adenyl cyclase to increase the level of cAMP which decreases intracellular calcium and leads to a decrease of uterine contractions."@en . . . . "Ritodrinium"@en . "Yutopar"@en . "26652-09-5"@en . "Ritodrine"@en . . "Adrenergic beta-agonist used to control premature labor. [PubChem]"@en . . "For the treatment and prophylaxis of premature labour"@en . .