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With the exception of formoterol, LABAs are not recommended for the treatment of acute asthma exacerbations because of their slower onset of action compared to salbutamol. Their long duration of action is due to the addition of a long lipophilic side-chain that binds to an exosite on adrenergic receptors.
Overuse of β 2 agonists and asthma treatment without proper inhaled corticosteroid use has been associated with an increased risk of asthma exacerbations and asthma-related hospitalizations. [8] The excipients, in particular sulfite , could contribute to the adverse effects.
An anti-asthmatic agent, also known as an anti-asthma drug, refers to a drug that can aid in airway smooth muscle dilation to allow normal breathing during an asthma attack or reduce inflammation on the airway to decrease airway resistance for asthmatic patients, or both. The goal of asthmatic agents is to reduce asthma exacerbation frequencies ...
“Asthma is caused by a deviated immune response to your immune system ... combined with the swelling effect, makes it frighteningly difficult to breathe. Short-acting beta agonists (SABA) are a ...
LABAs should not be used as a monotherapy, instead, they should be used concurrently with an inhaled corticosteroid, such as beclometasone dipropionate or fluticasone propionate in the treatment of asthma to minimize serious reactions such as asthma-related deaths. Combination of inhaled corticosteroids and salmeterol (LABA) has synergistic ...
Formoterol, also known as eformoterol, is a long-acting β 2 agonist (LABA) used as a bronchodilator in the management of asthma and chronic obstructive pulmonary disease (COPD). Formoterol has an extended duration of action (up to 12 h) compared to short-acting β 2 agonists such as salbutamol (albuterol), which are effective for 4 h to 6 h.
Terbutaline, sold under the brand names Bricanyl and Marex among others, is a β 2 adrenergic receptor agonist, used as a "reliever" inhaler in the management of asthma symptoms and as a tocolytic (anti-contraction medication) to delay preterm labor for up to 48 hours.
By treating asthma with optically pure (R)-salbutamol the risk of side effects, such as nervous system stimulatory effects and cardiac arrhythmia, can be minimized. [20] There are several routes for enantioselective synthesis , as well as methods for synthesis of the racemic mixture followed by chiral resolution .
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