This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
All are used in painful diabetic neuropathy, EXCEPT: 
Select and explain. 
A. Phenytoin, B. Local use of capsicum, C. Dextroamphetamine, D. Amitrytline
C: Dextroamphetamine
Answer: C: Dextroamphetamine 
Explanation: Answer is C (Dextroamphetamine):,. Dextroamphetantine has not been mentioned as an agent fir treatment g'painlitl diabetic neuropathy.