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Ephedrine works by inducing the release of norepinephrine and hence indirectly activating the α-and β-adrenergic receptors. [11] Chemically, ephedrine is a substituted amphetamine and is the (1R,2S)-enantiomer of β-hydroxy-N-methylamphetamine. [14] Ephedrine was first isolated in 1885 and came into commercial use in 1926.
Asthma is a chronic condition that affects the airways in the lungs. The image shows the difference between a healthy bronchial airway (left) and a bronchial airway during an asthma attack (right). Exposure to asthma triggers can lead to inflammation and narrowing of airways in asthma patients, resulting in asthma attacks and breathing ...
[16] [17] [18] Combinations of theophylline, ephedrine, and a barbiturate were later phased out in favor of combinations of theophylline and ephedrine alone (e.g., brand name Franol). [ 2 ] [ 1 ] Fixed-dose combinations of theophylline and ephedrine were abandoned after the 1970s as they did not allow for dose titration in asthma therapy owing ...
Over the counter expectorants (like Mucinex) or a decongestant (like Sudafed) can help with your chest congestion, says Dr. Watkins. Decongestants and expectorants are both effective at treating ...
This synthesis was a by-product of a search for ephedrine, a bronchodilator used to treat asthma extracted exclusively from natural sources. Over-the-counter use of substituted amphetamines was initiated in the early 1930s by the pharmaceutical company Smith, Kline & French (now part of GlaxoSmithKline ), as a medicine ( Benzedrine ) for colds ...
Pseudoephedrine is widely available over-the-counter (OTC) in both single-drug and combination preparations. [30] [22] [13] [2] Availability of pseudoephedrine has been restricted starting in 2005 as it can be used to synthesize methamphetamine. [13] [2] Phenylephrine has replaced pseudoephedrine in many over-the-counter oral decongestant ...
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