Like "Here's what Web MD says about solu-medrol: http://www.webmd.com/drugs/drug-6135-Solu-Medrol+Inj.aspx?drugid=6135&drugname=Solu-Medrol+Inj&source=2 On the page which speaks of side effects it lists Diabetes as one and says the side effect is "infrequent" but "severe" so since you already have diabetes it would be expected that your BGs would be higher than normal. You might want to check out the reviews of the drug. "