Does Cosentyx cause kidney problems?
Cosentyx (secukinumab) is not a commonly identified cause of kidney (renal) problems. But kidney-related effects can occur with many immune-modulating medicines, so it’s worth watching for symptoms and discussing any concerns with a clinician.
What kidney problems should people watch for?
If you’re taking Cosentyx and develop new or worsening symptoms that could point to kidney issues, seek medical advice promptly. People typically get checked for kidney problems when they have things like:
- Swelling in legs/feet or around the eyes
- Much less urine than usual
- Unexplained fatigue, nausea, or shortness of breath
- New flank (side) pain
- Dark/foamy urine or blood in urine
A clinician may order urine tests (for protein/blood) and blood tests such as creatinine/eGFR to assess kidney function.
Could Cosentyx lead to kidney inflammation (like glomerulonephritis or interstitial nephritis)?
Severe kidney inflammation is usually uncommon, but biologic therapies and other immune-modulating drugs can, in rare cases, be associated with inflammatory kidney conditions. Because this is not specific to Cosentyx alone, the right next step is evaluation rather than assuming the medication is definitely the cause.
What else could be causing kidney problems in someone on Cosentyx?
Kidney issues can also be related to the underlying condition being treated (for example, inflammatory disease), infections, dehydration, or other medicines (such as NSAIDs like ibuprofen/naproxen, certain antibiotics, or other nephrotoxic drugs). A prescriber can review the full medication and illness history to identify likely causes.
When to get urgent care
Get urgent medical care if you have:
- Very reduced urine output
- Visible blood in urine
- Severe swelling
- High fever with feeling very unwell
- Severe pain plus vomiting or inability to keep fluids down
Should you stop Cosentyx if you suspect kidney problems?
Don’t stop Cosentyx on your own. Kidney symptoms should be assessed, and your prescriber can decide whether to continue, hold, or switch therapy based on the suspected cause and test results.
If you tell me what kidney problem you mean (for example, high creatinine, protein in urine, kidney pain, or swelling) and your other medications, I can help you think through the most relevant possibilities and what to ask your doctor.