Which of the following must be included on a prescription label for a drug used on association grounds?

The correct answer is the inclusion of dosage and duration of treatment on a prescription label for a drug used on association grounds. This requirement is important for ensuring that the medication is administered correctly and within the therapeutic range, providing necessary guidance for both the trainer and any staff administering the medication.

Accurate dosage helps to ensure that the horse receives the appropriate amount of medication needed for its condition, while the duration of treatment informs how long the medication should be given. This information is crucial in preventing underdosing, which may not effectively treat the horse, or overdosing, which can lead to adverse effects or violations of racing regulations.

Including this information is part of the standard practice of responsible medication management within the racing industry, emphasizing the need for transparency and accountability regarding horse care.