Who should avoid Cosentyx (secukinumab)?
Cosentyx (secukinumab) is an immune-modulating medicine. People who have certain infections or specific medical situations should not take it, or should avoid it until they are evaluated by a clinician.
People with an active serious infection
Because Cosentyx can weaken parts of the immune system, it is generally avoided in people who have an active serious infection. If you currently have symptoms of a significant infection (for example, fever, worsening localized infection, or pneumonia), you should seek medical advice before starting.
People with untreated tuberculosis (TB) or TB risk with active disease
IL-17 pathway drugs can be associated with TB reactivation risk. Patients with active TB should not take Cosentyx, and those with latent TB usually require screening and treatment planning before starting.
People with hypersensitivity to secukinumab
If you have had a serious allergic reaction to secukinumab or any ingredient in Cosentyx, you should not take it.
What conditions should make someone use extra caution instead of starting right away?
Even if not an absolute “never take,” these situations commonly require clinician review and timing decisions.
Recurrent infections or chronic infection history
If you get infections often, have chronic infections, or have had serious infections in the past, the prescriber typically weighs risks before starting and may monitor more closely.
Ongoing treatment decisions around infection and vaccines
Because live vaccines and infection timing can matter with immune-modulating drugs, patients usually need to discuss vaccination status and infection prevention with their clinician before starting.
Are there any pregnancy or breastfeeding reasons to avoid Cosentyx?
Cosentyx use in pregnancy and breastfeeding needs individualized risk assessment by a clinician. Don’t start or stop on your own—ask your prescriber what’s recommended for your situation.
When should patients contact a doctor urgently after starting Cosentyx?
If you develop signs of infection (especially fever, chills, shortness of breath, worsening cough, or painful spreading redness), you should contact your clinician promptly. They may advise pausing treatment until the infection is evaluated.
Sources
I don’t have the provided source materials needed to cite specific “should not take” contraindications for Cosentyx. If you share the label text or allowed reference pages you’re working from (for example, prescribing information sections like “Contraindications” or “Warnings/Precautions”), I can convert them into a precise, citation-backed answer.