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
[{'content': 'Unorable interaction of drug and substrate in human beings are all except: \nSelect and explain. \nA. Omeprazole reduces stomach acid, B. Methotrexate inhibiting folate, C. Barbiturates decreases B 12 absorption, D. Retinoic acid inhibits vitamin E', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Omeprazole reduces stomach acid Omeprazole reduces stomach acid secretion: This interaction is beneficial for patients suffering from GERD without having any associated complications. Rest three interactions has a bad impact on the normal healthy individuals. Methotrexate inhibiting folate Barbiturates decreases 13,2 absorption Retinoic acid inhibits vitamin E', 'role': 'assistant'}]