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Diphenhydramine is contraindicated in premature infants and neonates, as well as people who are breastfeeding. It is a pregnancy Category B drug. Diphenhydramine has additive effects with alcohol and other CNS depressants. Monoamine oxidase inhibitors prolong and intensify the anticholinergic effect of antihistamines. [47]
Orthostatic hypotension (severe drop in systolic blood pressure when standing up suddenly) and significantly increased risk of falls in the elderly population [20] Older patients are at a higher risk of experiencing CNS side effects.
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.
Dimenhydrinate is a theoclate salt composed of diphenhydramine and 8-chlorotheophylline (a theophylline relative) in a 1:1 ratio. [ 2 ] Dimenhydrinate was introduced to the market by G.D. Searle in 1949.
“A common myth is that you will not develop high blood pressure if you do not have a family history of high blood pressure or heart disease,” says Marjorie Nolan Cohn, M.S., RD, LDN, a ...
In 1900, Reid Hunt, a pharmacologist (1870-1948), realised a fall in blood pressure in rabbits after removing adrenaline (epinephrine) from adrenal glands extract. While he initially attributed this effect to choline , he later discovered acetylcholine was 100 000 times more potent in lowering blood pressure.
The relationship was most pronounced in older Black men, equating to an extra 2.8 years of cognitive aging in those with the most variable blood pressure. How does blood pressure affect cognitive ...
Diphenhydramine is also used off-label for its sedative properties, particularly by parents seeking to make their children sedated or sleep during long-haul flights. This use of diphenhydramine has been criticized for a number of reasons, ranging from ethical to safety concerns, [ 25 ] but also due to the risk of diphenhydramine's paradoxical ...