What is one effect of drugs used for treating enuresis?

Drugs used for treating enuresis, which is the involuntary discharge of urine, are specifically designed to manage and reduce incontinence. The primary goal of these medications is to help individuals gain better control over their bladder, thereby decreasing episodes of involuntary urination, especially during sleep in children. This reduction in incontinence is crucial for improving the quality of life for those affected by enuresis.

The other options do not align with the primary actions of medications used for this condition. For instance, increasing urine production would not be beneficial for those experiencing enuresis, as this would likely exacerbate the problem. Stimulating regular urination also does not directly address the issue of incontinence and may lead to other complications rather than providing a therapeutic effect. Lastly, enhancing contractility of the bladder is more aligned with medications used to treat urinary retention or bladder dysfunctions rather than addressing enuresis or involuntary urination. Therefore, the correct choice effectively highlights the intended therapeutic outcome of reducing incontinence in individuals with enuresis.