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Why adrenaline is used although there are more selective adrenergic receptors agonists?

April 26, 2017adrenaline Adrenergic agonists receptors selective Used

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Why adrenaline is used although there are more selective adrenergic receptors agonists?

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Adrenaline is still in use because it can act on more than one receptor e.g. in anaphylactic shock: it acts on alpha receptors to increase the ABP, on beta-2 receptors to dilate the bronchial tree and prevent histamine release in bronchial asthma: it decongest the bronchial mucosa (alpha action) and dilates the bronchioles (beta-2 action) In addition it is a very cheap drug.