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Topical atropine is used as a cycloplegic, to temporarily paralyze the accommodation reflex, and as a mydriatic, to dilate the pupils. [15] Atropine degrades slowly, typically wearing off in 7 to 14 days, so it is generally used as a therapeutic mydriatic, whereas tropicamide (a shorter-acting cholinergic antagonist) or phenylephrine (an α-adrenergic agonist) is preferred as an aid to ...
[2] [3] It is a fixed-dose combination of the medications diphenoxylate, as the hydrochloride, an antidiarrheal; and atropine, as the sulfate, an anticholinergic. [1] It is taken by mouth. [2] Onset is typically within an hour. [4] Side effects may include abdominal pain, angioedema, glaucoma, heart problems, feeling tired, dry mouth, and ...
Diphenoxylate is used to treat diarrhea in adults; it is only available as a combination drug with a subtherapeutic dose of atropine to prevent abuse. [2] It should not be used in children due to the risk of respiratory depression. [2] It does not appear harmful to a fetus but the risks have not been fully explored. [2]
In the United States, belladonna is marketed as a dietary supplement, typically as an atropine ingredient in over-the-counter cold medicine products. [40] [56] Although such cold medicine products are probably safe for oral use at typical atropine dosages (0.2 milligram), there is inadequate scientific evidence to assure their effectiveness. [56]
Ipratropium is a derivative of atropine [3] but is a quaternary amine and therefore does not cross the blood–brain barrier, which prevents central side effects. Ipratropium should never be used in place of salbutamol (albuterol) as a rescue medication.
Anticholinergics generally have antisialagogue effects (decreasing saliva production), and most produce some level of sedation, both being advantageous in surgical procedures. [8] [9] Until the beginning of the 20th century, anticholinergic drugs were widely used to treat psychiatric disorders. [10]
Muscarinic antagonist effects and muscarinic agonist effects counterbalance each other for homeostasis. Certain muscarinic antagonists can be classified into either long-acting muscarinic receptor antagonists ( LAMA s) or short-acting muscarinic receptor antagonists ( SAMA s), depending on when maximum effect occurs and for how long the effect ...
This weaning process may be over a few days if the course of prednisone is short but may take weeks or months [33] if the patient had been on long-term treatment. Abrupt withdrawal may lead to an Addisonian crisis. For those on chronic therapy, alternate-day dosing may preserve adrenal function and thereby reduce side effects. [34]