Which of the following is considered a disqualifying medical condition under Rx disqualifiers?

Insulin therapy is considered a disqualifying medical condition under Rx disqualifiers because it indicates that the individual has diabetes that requires the administration of insulin to manage their blood glucose levels. This condition poses significant risks for safety-sensitive positions, particularly in professions such as driving or operating heavy machinery. The use of insulin suggests that the individual may experience episodes of hypoglycemia or other complications related to diabetes, which can impair their ability to function safely in high-responsibility roles.

The other options do not present the same level of concern. Chronic pain management with acetaminophen typically does not impair one’s ability to perform essential functions or pose safety risks to others. Regular exercise is beneficial for overall health and does not constitute a disqualifying condition. Occasional use of over-the-counter antihistamines is generally not detrimental unless it results in drowsiness, but often, the specific context and type of antihistamine used would be evaluated. However, these situations do not inherently prevent a person from being qualified for safety-sensitive positions the way that insulin therapy does.