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| Trade names | Menetyl; Nethaprin; Novedrin |
| Other names | Ethylephedrine;N-Ethylephedrine |
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| ECHA InfoCard | 100.051.218 |
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| Formula | C12H19NO |
| Molar mass | 193.290 g·mol−1 |
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Etafedrine (INNTooltip International Nonproprietary Name,BANTooltip British Approved Name), sold under the brand nameNethaprin among others and also known asN-ethylephedrine, is asympathomimetic agent used as abronchodilator to treatasthma.[2][3][4] It was previously commercially available as both thefree base and as thehydrochloridesalt from Sanofi-Aventis (nowSanofi) but is now no longer marketed.[citation needed]
Unlikeephedrine andtyramine, etafedrine does notinduce the release ofepinephrine ornorepinephrine and instead acts as aselectiveβ2-adrenergic receptor agonist, thereby mediating itsbronchodilator effects.[4][5]