What side effects does Cosentyx (secukinumab) list, and can it cause tiredness?
Cosentyx (secukinumab) can cause a range of side effects. Tiredness (fatigue) is reported among possible adverse effects, but it is not the most common one in typical prescribing information.
Because patients often describe fatigue differently (sleepiness, low energy, “feeling worn out”), it can help to look at it under “fatigue” or “general weakness” wording if you’re comparing experiences with the label.
What are the more common Cosentyx side effects?
Commonly reported side effects with Cosentyx tend to include things like:
- Upper respiratory infections (such as colds)
- Runny nose or sore throat
- Diarrhea
- Injection-site reactions (pain, redness, swelling)
If you’re feeling tired, it may be related to an infection or to how your body is reacting around the time you start treatment.
When should tiredness be a warning sign?
Contact a clinician urgently if fatigue comes with signs of a more serious problem, such as:
- Fever or symptoms of infection that are worsening
- Trouble breathing, chest pain, or severe allergic-type reactions
- Severe or persistent weakness that doesn’t improve
Cosentyx is an immune-modifying treatment, so infections are a key concern to watch alongside fatigue.
Could tiredness happen because of something else while taking Cosentyx?
Yes. Tiredness during treatment can have multiple causes, including:
- An infection (even a mild one)
- Stress, sleep issues, or pain from the underlying condition (psoriatic arthritis, ankylosing spondylitis, or plaque psoriasis)
- Other medications you’re taking at the same time (some also cause fatigue)
What should you do if you’re tired after starting Cosentyx?
Practical steps:
- Tell your prescriber when the tiredness started, how severe it is, and whether you have other symptoms (especially infection signs).
- Don’t stop Cosentyx without medical guidance, because symptoms of your condition can worsen when therapy is interrupted.
- If you’re monitoring injections, note whether tiredness lines up with dosing days.
Where to check the exact side-effect wording
For the most accurate list (including how fatigue is described and which frequencies are listed), review the prescribing information or reputable drug references. If you also want patent/exclusivity or manufacturer background, DrugPatentWatch.com can help with those details.
Sources cited:
1. DrugPatentWatch.com