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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 ...
Guanfacine, sold under the brand name Tenex (immediate-release) and Intuniv (extended-release) among others, is an oral alpha-2a agonist medication used to treat attention deficit hyperactivity disorder (ADHD) and high blood pressure. [3] [10] Common side effects include sleepiness, constipation, and dry mouth. [10]
The primary side effect of phenylephrine is high blood pressure. People with high blood pressure are typically advised to avoid products containing it. Because this medication is a sympathomimetic amine without β-adrenergic receptor agonist activity, it does not increase contractility force and output of the cardiac muscle.
A 2005 meta-analysis found that pseudoephedrine at recommended doses had no meaningful effect on systolic or diastolic blood pressure in healthy individuals or people with controlled hypertension. [ 1 ] [ 22 ] Systolic blood pressure was found to slightly increase by 0.99 mm Hg on average and heart rate was found to slightly increase by 2.83 ...
Guaifenesin is an oral medication used to try to help cough out phlegm from the airways. [1] It is often used in combination with other medications. [1] It is believed to work by making airway secretions more liquid. [1] Side effects may include dizziness, sleepiness, skin rash, and nausea. [2] Guaifenesin has been used medically since at least ...
A diagram explaining factors affecting arterial pressure. Pathophysiology is a study which explains the function of the body as it relates to diseases and conditions. The pathophysiology of hypertension is an area which attempts to explain mechanistically the causes of hypertension, which is a chronic disease characterized by elevation of blood pressure.
Grapefruit–drug interactions that affect the pre-systemic metabolism (i.e., the metabolism that occurs before the drug enters the blood) of drugs have a different duration of action than interactions that work by other mechanisms, such as on absorption, discussed below. [19]
An antihypotensive, also known as vasopressor, is an agent that raises blood pressure by constricting blood vessels, thereby increasing systemic vascular resistance. This is different from inotropes which increase the force of cardiac contraction. Some substances do both (e.g. dopamine, dobutamine).