Oxyphencyclimine hydrochloride is primarily used as an anticholinergic agent, which means it helps reduce the activity of the parasympathetic nervous system. It is commonly prescribed to treat gastrointestinal disorders such as peptic ulcers, irritable bowel syndrome, and other conditions involving excessive stomach acid or spasms in the digestive tract. By blocking acetylcholine receptors, it helps relax smooth muscles in the stomach and intestines, reducing cramps and discomfort. Additionally, it may be used in some cases to manage symptoms of urinary incontinence or overactive bladder by decreasing involuntary muscle contractions. Its ability to reduce secretions also makes it useful in controlling excessive salivation or sweating in certain medical conditions.