"She's a chemist, not a doctor."
--------------
In the United States a Doctor of Pharmacy (PharmD) is considered to be comparable to an MD (Doctor of Medicine). The specialties are different but I would trust a PharmD to know more about medications than a medical doctor.

I have taken a couple of pharmacy courses. The beginning level for nurses blew me away. I think Dr. Megan has earned her title and should be called a Doctor. She provides valuable information about Prednisone free of charge.

"Dr. Megan Jolley Milne, PharmD, BCACP, earned her Doctor of Pharmacy degree at a Top Ten pharmacy school, the University of Utah College of Pharmacy, following in her father and grandfather’s footsteps."

and ... she has personal experience with Prednisone.

"Dr. Megan is a third-generation pharmacist who experienced a mysterious rash and nearly bled to death, starting a roller coaster medical journey. One day she was a normal, healthy young mother of four children, and the next she was forced to take a lifesaving drug, prednisone. The drug stole vital nutrients like calcium from her body. The miracle drug made her feel miserable."

She acknowledges that Prednisone saved her life.

The BCACP certification isn't given away.
https://bpsweb.org/ambulatory-care-pharmacy/