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Diphenhydramine is a potent anticholinergic agent and potential deliriant in higher doses. This activity is responsible for the side effects of dry mouth and throat, increased heart rate, pupil dilation, urinary retention, constipation, and, at high doses, hallucinations or delirium.
“So you can do things that will briefly lower your heart rate—like deep breathing and meditation—but if you are trying to lower your overall heart rate over a longer period of time, the ...
A faster-than-normal heart rate. Bradycardia. A slower-than-normal heartbeat. ... Valvular heart disease occurs when any of the valves in your heart are damaged. It affects about 2.5% of people in ...
Class Ib antiarrhythmic agents are sodium channel blockers. They have fast onset and offset kinetics, meaning that they have little or no effect at slower heart rates, and more effects at faster heart rates. Class Ib agents shorten the action potential duration and reduce refractoriness.
Chronotropic effects (from chrono-, meaning time, and tropos, "a turn") are those that change the heart rate.. Chronotropic drugs may change the heart rate and rhythm by affecting the electrical conduction system of the heart and the nerves that influence it, such as by changing the rhythm produced by the sinoatrial node.
How to stabilize your heart rate. The most efficient way to lower your heart rate is through breathing, says Dr. Wang. “Deep exhalations can decrease your heart rate. Breathing in through the ...
The recommended dosage of Benadryl tablets for adults is 1 to 2 tablets every 4 to 6 hours, [1] and only 1 tablet every 4 to 6 hours for children under the age of 12. [2]The Benadryl challenge is an internet challenge that emerged in 2020, revolving around the deliberate consumption, excessive use and overdose of the antihistamine medicine diphenhydramine (commonly sold in the United States ...
Certain medications and medical conditions may also affect your heart rate. Always be aware of the possible side effects of prescription and over-the-counter medicines, as some may cause your ...