Two possible consequences that an employee does not meet all the requirements in an employment contract are, on the one hand, the eventual loss of the job and, on the other, a less possible readjustment of tasks for the employee. Thus, if this does not meet the requirements of the company, it is most likely to dispense with its services through firing him, either (if it is an employee with a certain history in the company, or has characteristics that make it necessary for it) modifying their job responsibilities.
Answer: I believe that it is not safe because if you were to say crush it up and snort it and you thought that is wasn't working so you did another and then maybe another then you might be taking more then what you where supposed to take in one setting.