This review identified four trials that compared the effectiveness of a steroid for short-term symptom control in glandular fever to a placebo and three other trials that used a combination of steroid and a antiviral drug. In total they included 362 participants. Steroid treatment provided relief from sore throat in the short-term (over 12 hours), in combination with an antiviral drug benefit was apparent at two to four days. However, these findings are limited because they were assessed in only one or two trials. Evidence of the effectiveness of steroids for other symptoms of glandular fever, or in combination with an antiviral drug, were less clear. We are unsure of adverse events from using steroids.