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Guaifenesin might act as an expectorant by increasing the volume and reducing the viscosity of secretions in the trachea and bronchi via stimulation of the gastric mucosa. . This stimulation leads to an increased parasympathetic activity in the respiratory tract via the so-called gastro-pulmonary reflex, although some in vitro studies suggested that it might also act directly on the ...
They provide temporary relief from symptoms of nasal congestion. Decongestants are available in oral and intranasal forms. Naphazoline and oxymetazoline are common topical (intranasal) decongestants, whilst pseudoephedrine is the most common example of oral decongestant used to reduce nasal congestion. Topical decongestants have a faster onset ...
A decongestant, or nasal decongestant, is a type of pharmaceutical drug that is used to relieve nasal congestion in the upper respiratory tract. The active ingredient in most decongestants is either pseudoephedrine or phenylephrine (the latter of which has disputed effectiveness ).
Decongestants and expectorants are both effective at treating different cold and allergy symptoms. Decongestants are a type of medicine that can provide short-term relief for a blocked or stuffy ...
Phenylephrine is found in a wide range of cold and flu medications, including Sudafed PE, Benadryl Allergy D Plus Sinus and Vicks DayQuil Cold and Flu Relief. Here’s what experts say are ...
Do over-the-counter decongestants like Sudafed PE work? Doctors have said oral phenylephrine is ineffective to relieve nasal congestion. An FDA panel will reevaluate the evidence.
Phenylpropanolamine (PPA), sold under many brand names, is a sympathomimetic agent which is used as a decongestant and appetite suppressant. [9] [1] [10] [11] It was previously commonly used in prescription and over-the-counter cough and cold preparations.
A notable opioid for the purpose of relief of diarrhoea is loperamide which is only an agonist of the μ opioid receptors in the large intestine and does not have opioid affects in the central nervous system as it doesn't cross the blood–brain barrier in significant amounts. This enables loperamide to be used to the same benefit as other ...