This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
At same concentration of steroids which of the following is most potent 
Select and explain. 
A. Ointment, B. Cream, C. Lotion, D. Gel
A: Ointment
Answer: A: Ointment 
Explanation: Refer Katzung 11/e p 1048 Ointment bases tend to give Better activity to the coicosteroids than do cream or lotion Ability of the voice to retard evaporation from the surface of skin varies.