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The extent of vasoconstriction may be slight or severe depending on the substance or circumstance. Many vasoconstrictors also cause pupil dilation. Medications that cause vasoconstriction include: antihistamines, decongestants, and stimulants. Severe vasoconstriction may result in symptoms of intermittent claudication. [1]
Possible causes alone or in conjunction that can cause labile hypertension are in the following criteria. [citation needed] Caffeine: consumption of caffeine may constrict blood vessels that may stimulate and display unexpected spikes in blood pressure. Researchers believe that caffeine could possibly block hormones that normally keep arteries ...
Like most stimulants, caffeine causes vasoconstriction, so the vasodilation effects from concomitant histamine can counteract this. Prokarin is formulated as a transdermal patch since histamine isn't well absorbed when consumed orally. While brand name Prokarin can be expensive, it can be compounded by pharmacists if prescribed by a physician. [3]
Researchers say consuming more than 400 milligrams of caffeine per day could raise the risk of cardiovascular disease. Excessive caffeine from coffee, tea, energy drinks, and other beverages may ...
For some, drinking a high-caffeine beverage might make them feel anxious, could make their heart race, cause gastrointestinal issues, or raise blood pressure, says Stephens. These are especially ...
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[52] [97] Caffeine can have negative effects on anxiety disorders. [98] According to a 2011 literature review, caffeine use may induce anxiety and panic disorders in people with Parkinson's disease. [99] At high doses, typically greater than 300 mg, caffeine can both cause and worsen anxiety. [100]
A 3 p.m. can of diet soda is also fine as long as you keep in mind that those 46 mg of caffeine can keep you alert for 8-10 hours. No one wants to be wide awake at 2 a.m. on weeknight. You Might ...