The patient taking methylprednisolone for ra, as the doctor was willing to reduce the dose of steroids he prescribed prednisone to this patient. is there any problem with the use of methylprednisolone (treat) and prednisone(prevention?

Your post/question is confusing. Both are steroids similar to those made by the body. Methylprednisolone is more potent by weight than prednisone but both have potential for similar long term complications. Prevention of side effects is a balancing act between disease control and letting it flare. This is really a conversation you should have with your doc.