Pharmacology Which of the following statements best describes an ‘orphan drug’ ? A It is a drug which acts on orphanin receptors B It is a very cheap drug C It is a drug which has no therapeutic use D It is a drug required for treatment or prevention of a rare disease 💡 Explanation Which of the following statements best describes an 'orphan drug' ? ✓ Correct Answer: D. It is a drug required for treatment or prevention of a rare disease