Anticholinergics are a class of medications that block the action of a neurotransmitter called acetylcholine. This neurotransmitter is involved in many functions, including muscle movement and the regulation of various bodily systems. By inhibiting its effects, anticholinergics can help treat conditions like asthma, COPD, and overactive bladder. These medications work by relaxing smooth muscles and reducing secretions in the body. Common side effects may include dry mouth, blurred vision, and constipation. Anticholinergics are often prescribed for their ability to alleviate symptoms related to respiratory and gastrointestinal disorders, making them valuable in medical treatment.