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Icotrokinra

Approved for plaque psoriasis in the US and EU in 2026.

A peptide taken as a once-daily tablet. It blocks the receptor, the pathway that some injected psoriasis biologics target. An made by Johnson & Johnson (with Protagonist), also called Icotyde and JNJ-2113.

Sequence not listed here. Drawn as a sketch.

What the evidence shows

Moderate-to-severe plaque psoriasis
Proven
In the two head-to-head ICONIC-ADVANCE trials, about 70% of people reached clear or almost clear skin at 16 weeks.
Ulcerative colitis
Supported
In a phase 2b trial, about 64% responded against 27% on placebo. Phase 3 trials are running in ulcerative colitis, psoriatic arthritis and Crohn's disease.

Side effects and risks

Common
Side-effect rates in the trials were within about one percentage point of placebo.
Unknown
It is new. Rare or long-term effects of blocking IL-23 this way will show only with wider use.

Who should avoid it: Ask the prescriber about infections and vaccines, as with other drugs that act on IL-23.

How it works

Where it acts
It blocks IL-23 receptors on immune cells.
What it changes
It turns down the immune signalling that drives psoriasis plaques.
What people notice
Clearer skin over weeks to months in trials, with side effects close to placebo.

How it is taken

One 200 mg tablet a day on waking, with water, at least 30 minutes before food. For adults, and children from age 12 who weigh at least 40 kg.

Getting it in the United States

This describes what people do. It is not advice. The decision is yours.

What experts and influencers say

Recommend4
Mixed view1
Warn against0

Recorded views, not a survey or scientific consensus. Cautions may concern misuse or unapproved products. Statements are paraphrased; check each source for context.

Supportive expert view

Said the once-daily pill pairs skin clearance with a favourable safety profile. Called it a possible game-changer as guidance shifts patients from repeated topical treatment to systemic therapy sooner.

Source: Healio, 2026-03

Linda Stein GoldSourceRecommends

Dermatology research director, Henry Ford

Cautionary expert view

No sourced expert view in this category yet. See the full list for other perspectives.

See all views 5

Said the once-daily pill pairs skin clearance with a favourable safety profile. Called it a possible game-changer as guidance shifts patients from repeated topical treatment to systemic therapy sooner.

Source: Healio, 2026-03

Linda Stein GoldSourceRecommends

Dermatology research director, Henry Ford

Said the pill could anchor the company's next IL-23 strategy if phase 3 confirms the colitis data. Forecast about 3.2 billion dollars in 2031 sales, with some overlap with the company's injectable.

Source: Clinical Trials Arena, 2025-10

Vasilis RoumpelakisSourceMixed view

Competitive intelligence analyst, GlobalData - Worldwide

Described the FDA approval as a pivotal moment for people living with plaque psoriasis.

Source: Healio, 2026-03

John ReedWebsiteRecommends

R&D head, Johnson & Johnson medicines

Money: Executive at the company that sells the drug

Photo source: jnj.com

Said most advanced psoriasis treatments are injected and many people, children especially, dislike needles. Presented the drug as targeted treatment in a daily pill.

Source: University of Queensland IMB, 2026-04

Mark SmytheWebsiteRecommends

Founder of Protagonist Therapeutics - Australia

Money: Founded the co-discovering company and held executive roles there until 2022

Photo source: infensabioscience.com

Called it a life-changing drug for people with psoriasis and credited Australian peptide science at the Queensland institute where the company began.

Source: University of Queensland IMB, 2026-04

Greg BourneSourceRecommends

Protagonist research lead, Brisbane - Australia

Money: Employee of the co-discovering company

More contextCase reports, watch and read, emerging uses and chemistry

Case reports

From journals, regulators and studies of users. One case proves little.

Benefit reportedtrial result in rare group - 2026

Adolescents aged 12 and over in the main phase 3 trial did better than the overall group. At week 24, about 86 percent had clear or almost clear skin and about 89 percent reached a 90 percent improvement score.

Source: Contemporary Pediatrics, 2026-03

Watch and read

Explainers, reporting and podcasts worth your time. Summaries are ours. No sellers.

When options run out

Uses people turn to when standard treatment has failed.

Ulcerative colitis, oral IL-23 blockade

Who
Adults with moderate to severe colitis who want a pill. Current IL-23 drugs for colitis are injected or infused.
Evidence
Phase 2b trial: about 64 percent responded at 12 weeks against 27 percent on placebo. Remission about 30 percent against 11 percent. Phase 3 not finished.
Route
Phase 3 ICONIC-UC trial, NCT07196748, adults and adolescents, due 2028

Source: Clinical Trials Arena, 2025-10

Scalp and genital psoriasis

Who
People with psoriasis in hard-to-treat, high-impact sites where creams often fail.
Evidence
The company reported results for scalp and genital psoriasis in 2025. Not a separate approved indication.

Source: Drugs.com approval history, 2026

Crohn's disease and psoriatic arthritis

Who
Patients with other IL-23 driven diseases who now rely on injected biologics.
Evidence
Studies are under way. No results or filings are reported yet for these uses.
Route
Company clinical trials

Source: Drugs.com approval history, 2026

Legal last-resort routes

Expanded access (compassionate use)

For a serious or life-threatening condition with no comparable alternative and no trial you can join. Your physician asks the company for the drug, then files with FDA and an ethics board. The company can refuse. Costs are often not insured.

Source: FDA, expanded access for patients

Right to Try

For a life-threatening condition after approved options are exhausted and no trial is open to you. The drug must have finished Phase 1 and be in active development. Your doctor asks the manufacturer directly. FDA does not review requests.

Source: FDA, Right to Try

Trial finders

Search ClinicalTrials.gov by condition or drug name, check eligibility and call the listed site. ResearchMatch is a free NIH-funded registry that lets researchers find you. Discuss risks with your own clinician before enrolling.

Source: NIH, finding a clinical trial

Personal import for serious conditions

FDA may not object when a US citizen imports up to about three months of a drug for a serious condition with no effective US treatment, with written personal-use confirmation and a US doctor's details. It is discretion, not a right.

Source: FDA, personal importation

Patient-specific compounding

When the approved product cannot meet a specific need of an identified patient, a prescriber can order a compounded version from a licensed pharmacy. Lower price alone does not qualify. Ingredients must be pharmaceutical grade.

Source: Oregon Board of Pharmacy, Feb 2025

Questions people ask

What is icotrokinra approved for?

Moderate-to-severe plaque psoriasis, sold as Icotyde. FDA approved it in March 2026 and the EU authorized it in September 2026, for adults and children from age 12 who weigh at least 40 kg.

How well does icotrokinra work for psoriasis?

In the two head-to-head ICONIC-ADVANCE trials, about 70% of people reached clear or almost clear skin at 16 weeks.

Is icotrokinra a pill or an injection?

A pill. It is a peptide taken as one tablet a day on waking, with water, at least 30 minutes before food.

What are the side effects of icotrokinra?

Side-effect rates in the trials were within about one percentage point of placebo. It is new, so rare or long-term effects will show only with wider use; ask the prescriber about infections and vaccines.

Does icotrokinra work for ulcerative colitis?

In a phase 2b trial, about 64% responded against 27% on placebo. Phase 3 trials are running in ulcerative colitis, psoriatic arthritis and Crohn's disease.

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Sources

  1. Johnson & Johnson: FDA approval of Icotyde (18 Mar 2026)
  2. EMA: Icotyde product page

Structure: PubChem