How it worksSafetyHealth libraryOur mission Sign in Start a free consult
Pymander
Free consult

What are the side effects of Deucravacitinib?

Updated Sep 7, 20262 min readAnswer
On this pageShort answer Living with deucravacitinib: what to watch for Common questions Related questions Sources
Short answer

**Most side effects of deucravacitinib (brand name Sotyktu) are mild, and the common ones are upper respiratory infections, cold sores, mouth ulcers, acne, and skin folliculitis.**

Deucravacitinib is a once-daily pill that blocks TYK2 signaling to treat moderate to severe plaque psoriasis. In studies it also raised blood creatine phosphokinase, a muscle enzyme, in some people without causing symptoms. Less common but more serious effects include shingles, other infections that need treatment, and changes in liver enzymes or triglycerides, which is why screening and follow-up labs matter. Unlike older JAK inhibitors, it does not carry a boxed warning, but your clinician still checks you for tuberculosis and hepatitis B or C before you start. Keep vaccines up to date before starting, since live vaccines are not recommended while you take it.

What are the side effects of Deucravacitinib? Ask our AI doctor - a straight answer in plain language, free, 24/7. Start a free consult Free · Private · 24/7
Find answers about deucravacitinibStart a free AI doctor consult

Living with deucravacitinib: what to watch for

1Get screened first:Expect tuberculosis and hepatitis B and C testing before your first dose, plus baseline liver and lipid labs.
2Update vaccines early:Finish any live vaccines before starting, and stick to non-live options such as flu, COVID, and shingles vaccines afterward.
3Track mouth and skin changes:Photograph acne, folliculitis, or mouth ulcers and note when they started so your clinician can judge whether to treat or wait.
4Treat infections promptly:Report fever, chills, a lingering cough, night sweats, or burning with urination rather than waiting to see if they pass.
5Watch for shingles:A burning or tingling stripe of blisters on one side of the body needs antiviral treatment within about 72 hours, so call the same day.
6Keep the follow-up labs:Liver enzymes, triglycerides, and creatine phosphokinase are checked periodically, and skipping those draws hides problems that have no symptoms.

Common questions

What are the side effects of Deucravacitinib?

Deucravacitinib (Sotyktu) is a TYK2 inhibitor taken as a daily pill for plaque psoriasis. The most commonly reported side effects are upper respiratory infections, raised blood creatine phosphokinase, cold sores, mouth ulcers, acne, and folliculitis. These are usually mild and often settle as treatment continues. Less often it can bring on shingles, an infection that needs antibiotics or antivirals, or shifts in liver enzymes and triglycerides, so clinicians screen for tuberculosis and hepatitis before you start and recheck labs during treatment. Call your clinician for fever, a cough that will not clear, a painful blistering rash in a band, or yellowing of the eyes or skin.

About this page. Written and maintained by the Pymander Health team. Last updated September 7, 2026.

Questions about this?Start a free consult