According to the ICH guideline on GMP for API, to which of the following is the MOST stringent requirement applied?

At a recent scientific meeting, Company Y had two booths:
* At one booth, Company Y provided brochures on a completed Phase II study.
* In an adjacent booth, Company Y's sales professionals were promoting one of Company
Y's marketed products.
A regulatory affairs-professional at Company X sends a letter to a counterpart at Company
Y requesting that Company Y stop this practice in the future and demanding a formal response to the letter. How should the regulatory affairs professional at Company Y BEST respond?

A company is currently marketing an implantable orthopedic medical device. The R&D department is planning to change the material used for the implant. The R&D department states that the change does not impact the safety and effectiveness of the product.
What action should the regulatory affairs professional take FIRST?

The API used for an approved drug product conforms to international monograph specifications and local pharmacopeia; however, the international monograph specifications of the API will be changing soon. Which is the most appropriate action for the regulatory affairs professional to take FIRST?

Which of the following statements regarding the off-label use of drugs is CORRECT?