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: Pharmacology
All of the following are side effects of Quinine except: 
Select and explain. 
A. QT prolongation, B. Tinnitus, C. Teratogenicity, D. Hypoglycemia
C: Teratogenicity
Answer: C: Teratogenicity 
Explanation: Quinine blocks K+ channels and can lead to QT prolongation.
It can also increase Insulin secretion and causes hypoglycemia.
It is a Cinchona compound that can lead to tinnitus and vertigo.
It is not teratogenic and hence can be used in pregnancy.