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However, not all of them are safe to use during pregnancy. One of the components of bismuth subsalicylate is salicylate, which is a component that crosses the placenta. Due to this, there is an increased risk for intrauterine growth retardation, fetal hemorrhage, and maternal hemorrhage within organogenesis and in the second/third trimester. [12]
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.
Rhinitis medicamentosa (or RM, also known as rebound congestion) is a condition of rebound nasal congestion suspected to be brought on by extended use of topical decongestants (e.g., oxymetazoline, phenylephrine, xylometazoline, and naphazoline nasal sprays) and certain oral medications (e.g., sympathomimetic amines and various 2-imidazolines) that constrict blood vessels in the lining of the ...
Phenylephrine is an over-the-counter drug that has been used for decades to relieve congestion and stuffy nose caused by allergies or colds, and purportedly works by reducing the swelling of blood ...
Phenylephrine is an oral medication primarily used as a decongestant. [5] [6] It is a selective α 1-adrenergic receptor activator which results in the constriction of both arteries and veins. [5] Common side effects include nausea, headache, and anxiety. [5] Phenylephrine was patented in 1927 and came into medical use in 1938. [7]
Phenylpropanolamine was previously available in the United States over-the-counter and in certain combination drug forms by prescription. [24] [25] One such example of the latter was a combination of phenylpropanolamine and chlorpheniramine, which dually contained decongestant and antihistamine effects, marketed by Tutag as 'Vernate'.
[1] [22] A closely related sympathomimetic and decongestant, phenylpropanolamine, was withdrawn due to associations with markedly increased blood pressure and incidence of hemorrhagic stroke. [22] There has been concern that pseudoephedrine may likewise dangerously increase blood pressure and thereby increase the risk of stroke, whereas others ...
Topical atropine is used as a cycloplegic, to temporarily paralyze the accommodation reflex, and as a mydriatic, to dilate the pupils. [15] Atropine degrades slowly, typically wearing off in 7 to 14 days, so it is generally used as a therapeutic mydriatic, whereas tropicamide (a shorter-acting cholinergic antagonist) or phenylephrine (an α-adrenergic agonist) is preferred as an aid to ...