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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 ...
After an FDA advisory committee said the decongestant phenylephrine, an ingredient found in many oral cold and flu medications, is ineffective, experts weigh in on alternatives.
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 ).
Opioids' classical use besides pain relief is as an anti-diarrhoeal drug. Opioids have agonist actions on the intestinal opioid receptors, which when activated cause constipation . Drugs such as morphine or codeine can be used to relieve diarrhoea this way.
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 ...
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.
Phenylephrine, sold under the brand names Neosynephrine and Sudafed PE among others, is a medication used as a decongestant for uncomplicated nasal congestion in the form of a nasal spray or oral tablet, [5] to dilate the pupil, to increase blood pressure given intravenously in cases of low blood pressure, and to relieve hemorrhoids as a suppository.
The FDA advisory panel concluded that oral forms of phenylephrine are ineffective, but nasal sprays and drops containing phenylephrine weren’t under review and are still considered effective.
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