Does Cosentyx (secukinumab) cause weight gain?
Cosentyx (secukinumab) is not known for causing weight gain as a typical or common side effect. In clinical use, the main safety concerns people ask about tend to be infections, injection-site reactions, and gastrointestinal or hypersensitivity effects rather than changes in body weight.
What side effects do people usually notice with Cosentyx?
Cosentyx can cause side effects such as upper respiratory infections and injection-site reactions, along with other less common effects. If someone feels “weight gain” after starting treatment, it’s often due to something else occurring at the same time (for example, changes in diet/activity, steroid use, or disease-related shifts in inflammation and appetite).
Could weight change happen indirectly through other factors?
Yes. Weight gain can happen indirectly in patients treated for psoriasis, psoriatic arthritis, or ankylosing spondylitis because these conditions and their treatments can affect:
- Use of corticosteroids (which can raise weight)
- Appetite and activity levels
- Fluid retention from other medical issues
- Overall disease control over time
If you’re taking steroids now or recently stopped, that timing can matter.
When should you call a clinician about weight gain on Cosentyx?
Contact a clinician promptly if weight gain is rapid or comes with warning signs such as:
- Swelling of the face/legs
- Shortness of breath
- New severe fatigue
- Fever or recurrent infections
Those symptoms could point to a different cause than Cosentyx.
What’s the best next step if you’re worried about your weight?
Keep track of when the weight change started relative to your first Cosentyx dose and whether you’ve changed anything else (steroids, pain control meds, activity, or diet). Bring that timeline to your prescriber so they can look for non–Cosentyx causes and decide whether to adjust treatment.
Sources
No drug-safety source was provided in the prompt, so I can’t cite specific Cosentyx labeling here. If you share whether you’re asking for common side effects vs. a specific dose/timeframe, I can tailor the guidance.