It is not known whether other medications will interact with hylan G-F 20. Talk to your
doctor and pharmacist before taking any prescription or over-the-counter medicines, including
herbal products during treatment with hylan G-F 20.
Notify your doctor immediately if you experience a rare but serious allergic reaction
(difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives) to hylan
G-F 20.
Other less serious side effects may also occur. Talk to your doctor if you experience
temporary pain or swelling of the affected joint;
rash or bruising at the injection site;
headache; or
upset stomach.
Side effects other than those listed here may also occur. Talk to your
doctor about any side effect that seems unusual or that is especially bothersome.