There are many causes of fatigue, from hormonal imbalances to lifestyle habits. Taking another medication will never fix the problem, because this never addresses the cause of the fatigue.
Depending on the complexity of the fatigue issues, we may only need you to answer a simple questionnaire to diagnose the problem or we may even order a specific blood panel and specific hormone tests.
For chronic fatigue issues, this is often times not a one cause, one effect issue. If you are not sleeping enough, or sleeping enough quality hours this will be one of the first issues addressed. If you are anemic, this would also be something that would be addressed. If you are overweight or have insulin resistance this would also need to be addressed.