Dryness of mouth, difficulty in talking/swallowing; reduced bronchial secretions; blurring of vision, photophobia; bradycardia followed by tachycardia and arrhythmias; urinary retention, constipation, vomiting, nausea; confusion and giddiness.
Potentially Fatal: Arrhythmias (especially after MI).
Pregnancy Category
Name :
C
Description
Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks
Mode of Action
Oxyphenonium is an anticholinergic drug. It exerts its action by inhibiting muscarinic (cholinergic) receptors on smooth muscles, cardiac muscles and prevents the effect of Acetylcholine. Inhibition of Acetylcholine produces relaxation of smooth muscles and prevents the muscle spasm in irritable bowel syndrome.
Oxyphenonium also has a direct relaxant effect on smooth muscle. It also inhibits gastrointestinal propulsive movement and decreases gastric acid secretion and control bronchial, pharyngeal and tracheal secretions. It also possesses nicotinic blocking activity and interferes with ganglionic or neuromuscular transmission. It cross the BBB poorly and does not produce CNS effect.
Interaction
Reduced gastric motility interferes with absorption of other drugs. Effects potentiated by other antimuscarinics including amantadine, some antihistamines, phenothiazines and TCA.
Pregnancy Category Note
N/A
Adult Dose
Adults: 1-2 tablets 3-4 times daily.
Child Dose
Children: 1/2-1 tablet 1-3 times daily.
Renal Dose
N/A
Administration
N/A
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