Which class of medications is primarily used for weight loss?

Weight-loss medications are specifically designed to aid individuals in achieving and maintaining a healthy body weight. These medications function by suppressing appetite, increasing feelings of fullness, or preventing fat absorption in the body, targeting the complex biological mechanisms related to weight management.

Unlike other classes of medications, weight-loss drugs have been developed with the primary intent of facilitating weight loss and managing obesity-related health issues. In contrast, antiemetics are used to prevent or treat nausea and vomiting, laxatives are aimed at treating constipation, and diuretics help to remove excess fluid from the body, primarily influencing weight temporarily through fluid loss rather than fat loss. Thus, the unique purpose and formulation of weight-loss medications make them the correct answer in this context.