You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following has most potent analgesic effect? and explain in detail?
Sufentanil is most potent analgesic. It is 1000 times more potent than morphine. Fentanyl is 100 times more potent than morphine. Meperidine is less potent than Morphine but its analgesic efficacy is about same.