metaproterenol sulfate

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trade names: Arm-A-Med, Metaprel, Prometa; drug class: selective β₂-agonist; action: relaxes bronchial smooth muscle by direct action on β₂-adrenergic receptors; uses: bronchial asthma, bronchospasm.

A bronchodilator used in the treatment of bronchial asthma. Also called orciprenaline sulfate.