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Diphenhydramine is a potent antimuscarinic (a competitive antagonist of muscarinic acetylcholine receptors) and, as such, at high doses can cause anticholinergic syndrome. [69] The utility of diphenhydramine as an antiparkinson agent is the result of its blocking properties on the muscarinic acetylcholine receptors in the brain.
For most people, recommendations are to reduce blood pressure to less than or equal to somewhere between 140/90 mmHg and 160/100 mmHg. [2] In general, for people with elevated blood pressure, attempting to achieve lower levels of blood pressure than the recommended 140/90 mmHg will create more harm than benefits, [3] in particular for older people. [4]
Diphenhydramine (Benadryl) Bupropion (Wellbutrin) Alprazolam (Xanax) Medications for hypertension, or high blood pressure, including: Diuretics like furosemide (Lasix) Vasodilators.
An FAA report found that between 2012 and 2016, diphenhydramine was the most common pharmaceutical known to cause impairment detected in post-mortem toxicology tests performed on someone who may have been in charge of the aircraft at the time of a fatal plane crash, specifically naming both Benadryl and Sominex.
Antihypertensive therapy seeks to prevent the complications of high blood pressure, such as stroke, heart failure, kidney failure and myocardial infarction. Evidence suggests that a reduction of blood pressure by 5 mmHg can decrease the risk of stroke by 34% and of ischaemic heart disease by 21%.
But, due to feedback regulation of the vasomotor center, there is a fall in blood pressure due to vasodilation. Important [ 5 ] muscarinic antagonists include atropine , hyoscyamine , hyoscine butylbromide and hydrobromide , ipratropium , tropicamide , cyclopentolate , pirenzepine and scopalamine .
[34] [35] Bitter oranges (such as the Seville oranges often used in marmalade) can interfere with drugs [38] including etoposide, a chemotherapy drug, some beta blocker drugs used to treat high blood pressure, and cyclosporine, taken by transplant patients to prevent rejection of their new organs. [12] Evidence on sweet oranges is more mixed. [11]
[18] [19] [20] High blood pressure affects 33% of the population globally. [9] About half of all people with high blood pressure do not know that they have it. [9] In 2019, high blood pressure was believed to have been a factor in 19% of all deaths (10.4 million globally). [9] Video summary