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An acute anticholinergic syndrome is reversible and subsides once all of the causative agents have been excreted. Reversible acetylcholinesterase inhibitor agents such as physostigmine can be used as an antidote in life-threatening cases. Wider use is discouraged due to the significant side effects related to cholinergic excess including ...
Diphenhydramine, while traditionally known as an antagonist, acts primarily as an inverse agonist of the histamine H 1 receptor. [86] It is a member of the ethanolamine class of antihistaminergic agents. [45] By reversing the effects of histamine on the capillaries, it can reduce the intensity of allergic symptoms.
Medications are used to reverse the symptoms of extrapyramidal side effects caused by antipsychotics or other drugs, by either directly or indirectly increasing dopaminergic neurotransmission. The treatment varies by the type of the EPS, but may involve anticholinergic agents such as procyclidine, benztropine, diphenhydramine, and trihexyphenidyl.
Liver, [3][4] mostly CYP3A4 mediated. Cyproheptadine, sold under the brand name Periactin among others, is a first-generation antihistamine with additional anticholinergic, antiserotonergic, and local anesthetic properties. It was patented in 1959 and came into medical use in 1961. [5]
Benadryl Allergy. Benadryl Allergy is the name of a Benadryl product found in the United States and Canada. It is an antihistamine drug used to relieve allergies. Its active ingredient is diphenhydramine, a first-generation antihistamine. It is known to be sedative, making drowsiness a common side effect.
Physostigmine, an acetylcholinesterase inhibitor, can be used to treat glaucoma and delayed gastric emptying.Because it enhances the transmission of acetylcholine signals in the brain and can cross the blood–brain barrier, physostigmine salicylate is used to treat anticholinergic poisoning (that is, poisoning by substances that interfere with the transmission of acetylcholine signaling, such ...
Antidote. An antidote is a substance that can counteract a form of poisoning. [1] The term ultimately derives from the Greek term φάρμακον ἀντίδοτον (pharmakon antidoton), " (medicine) given as a remedy". Antidotes for anticoagulants are sometimes referred to as reversal agents.
Dopamine antagonist. A dopamine antagonist, also known as an anti-dopaminergic and a dopamine receptor antagonist (DRA), is a type of drug which blocks dopamine receptors by receptor antagonism. Most antipsychotics are dopamine antagonists, and as such they have found use in treating schizophrenia, bipolar disorder, and stimulant psychosis. [1]