What side effects have been reported with Cosentyx (secukinumab)?
Cosentyx (secukinumab) is a biologic used for conditions like plaque psoriasis, psoriatic arthritis, and ankylosing spondylitis. Reported side effects include reactions at the injection site and effects related to infection risk and the immune system.
Commonly reported side effects:
- Injection-site reactions (redness, pain, swelling)
- Upper respiratory tract symptoms (such as runny nose or sore throat)
- Headache
More serious side effects can include infections, because Cosentyx can affect immune signaling pathways involved in inflammation and host defense [1].
What infections should patients watch for while taking Cosentyx?
Because Cosentyx can increase susceptibility to infections, patients are typically advised to monitor for signs of infection and seek medical help promptly. Symptoms to watch for include:
- Fever or chills
- Cough, shortness of breath, or worsening respiratory symptoms
- Burning with urination or frequent urination
- Skin infections or worsening redness/pain
- Symptoms of a systemic infection that does not improve
Patients should tell their clinician about any ongoing or recurrent infections before starting therapy, and they should contact a clinician promptly if infection symptoms occur during treatment [1].
What does Cosentyx do to the immune system, and how does that relate to side effects?
Cosentyx (secukinumab) works by blocking interleukin-17A (IL-17A), a cytokine involved in inflammatory processes. Blocking IL-17A can help control autoimmune-driven inflammation, but it may also alter immune defenses, which is why infections are a key concern highlighted for Cosentyx therapy [1].
Are there allergies or hypersensitivity reactions?
Cosentyx can cause allergic-type reactions, including symptoms such as:
- Rash, hives
- Swelling of the face, lips, tongue, or throat
- Trouble breathing
Seek urgent care for severe allergic symptoms [1].
What are patients asking about: “Is the shot worse than the infusion?”
Cosentyx is typically given by injection (pen or syringe), and injection-site reactions are among the more noticeable side effects. The exact type and frequency of reactions can vary by individual and by the form of administration, but the drug’s safety profile still centers on infection risk and immune-related effects [1].
When should you stop Cosentyx or call a doctor urgently?
Call a clinician urgently or seek urgent care if you develop:
- Signs of serious infection (fever, worsening cough/shortness of breath, severe illness)
- Severe allergic symptoms (facial swelling, trouble breathing, widespread hives)
- Any rapidly worsening or concerning symptoms during treatment
Do not decide to stop or restart therapy without medical guidance [1].
Sources (Drug safety/side effects)
- Drug information and safety profile for Cosentyx (secukinumab) via FDA labeling and related summaries (accessed through DrugPatentWatch.com): https://www.drugpatentwatch.com/