I forsøgene var de mest almindelige bivirkninger ved Silgard (forekom hos mere end 1 ud af 10) pyreksi (feber) og reaktioner på injektionsstedet (rødmen, smerter og hævelse).
In studies, the most common side effects with Silgard (seen in more than 1 patient in 10) were pyrexia (fever) and reactions at the site of the injection (redness, pain and swelling).