Like all medications, taking ixekizumab carries some risk of side effects, which must be balanced with the potential benefits. In general, the risk of joint damage and permanent disability (resulting from arthritis) is much greater than the risks of side effects from ixekizumab. When monitored properly the vast majority of side effects are rare, most improve over time and are reversible.
As with all DMARD and biologic medications, ixekizumab can lower the ability of your immune system to fight infections and increase your risk of infections. You should take precautions to minimize your risk of being infected by common contagious infections such as COVID-19, influenzae, pneumonia, and the common cold.
The most commonly reported side effect with ixekizumab is symptoms of a cold (sore throat, stuffy nose). Ixekizumab can cause a reaction (redness, pain, and itching) at the injection site. Other commonly reported symptoms include nausea and athlete’s foot. Talk to your healthcare provider if any of these symptoms affect you severely.
Before starting this medication, you will likely be tested for inactive (“latent”) tuberculosis (TB) and hepatitis B because ixekizumab can dampen the immune system and cause these infections to become active. If TB or hepatitis is found, it will need to be treated before you start ixekizumab.
Rarely ixekizumab can cause a serious allergic reaction (feeling faint, swelling of the face, eyelids, tongue, lips, mouth or throat, trouble breathing, chest tightness). If you have troublesome symptoms talk to your healthcare provider.