Nitisinone
Various Alimentary Tract and Metabolism Products
Sold as NITYR · ORFADIN
- Drug class
- Various Alimentary Tract and Metabolism Products
- Availability
- Prescription only
- Routes
- Oral
- Markets covered
- 4
- Products on record
- 23
- FDA reports (12 mo)
- 31
Overview
Nitisinone is an active pharmaceutical ingredient in the Various Alimentary Tract and Metabolism Products group (A16AX). The information below is compiled per regulator from the product labels on record, with direct links to the original documents.
Regulatory status by market
| Market | Regulator | Products | Last revision |
|---|---|---|---|
| GB United Kingdom | MHRA | 11 | May 29, 2026 |
| CA Canada | Health Canada | 8 | November 6, 2025 |
| US United States | FDA | 2 | December 22, 2025 |
| EU European Union | EMA | 2 | July 4, 2025 |
GBUnited Kingdom· MHRA
11 products
Uses
Hereditary tyrosinemia type 1 (HT-1) Nitisinone is indicated for the treatment of adult and paediatric (in any age range) patients with confirmed diagnosis of hereditary tyrosinemia type 1 (HT-1) in combination with dietary restriction of tyrosine and phenylalanine.
Alkaptonuria (AKU) Nitisinone is indicated for the treatment of adult patients with alkaptonuria (AKU).
How to take
CACanada· Health Canada
8 products
Uses
18 Page 3 of 21 MDK-Nitisinone Nitisinone capsules PART I: HEALTH PROFESSIONAL INFORMATION SUMMARY PRODUCT INFORMATION Route of Administration Dosage Form / Strength Clinically Relevant Nonmedicinal Ingredients Oral Capsules 2 mg, 5 mg, 10 mg, 20 mg For a complete listing see DOSAGE FORMS, COMPOSITION AND PACKAGING section.
INDICATIONS AND CLINICAL USE MDK-Nitisinone (nitisinone) is indicated for the treatment of patients with hereditary tyrosinemia type 1 (HT-1) in combination with dietary restriction of tyrosine and phenylalanine. Treatment with MDK-Nitisinone should be initiated and supervised by a physician experienced in the treatment of HT-1.
Geriatrics (≥ 65 years of age):
Clinical studies of nitisinone did not include any subjects aged 65 and over.
Pediatrics (< 18 years of age):
Clinical trials of nitisinone were conducted in patients with HT-1 ranging in age from birth to 21 years of age [see CLINICAL TRIALS]. CONTRAINDICATIONS Patients who are hypersensitive to this drug or to any ingredient in the formulation or component of the container.
USUnited States· FDA
2 products
Uses
1 INDICATIONS AND USAGE ORFADIN ® is indicated for the treatment of adult and pediatric patients with hereditary tyrosinemia type 1 (HT-1) in combination with dietary restriction of tyrosine and phenylalanine. ORFADIN is a hydroxy-phenylpyruvate dioxygenase inhibitor indicated for the treatment of adult and pediatric patients with hereditary tyrosinemia type 1 (HT-1) in combination with dietary restriction of tyrosine and phenylalanine.
( 1 )
How to take
EUEuropean Union· EMA
2 products
Uses
Hereditary tyrosinemia type 1 (HT-1) Orfadin is indicated for the treatment of adult and paediatric (in any age range) patients with confirmed diagnosis of hereditary tyrosinemia type 1 (HT-1) in combination with dietary restriction of tyrosine and phenylalanine.
Alkaptonuria (AKU) Orfadin is indicated for the treatment of adult patients with alkaptonuria (AKU).
How to take
Drug interactions
Known interactions involving Nitisinone. Select one for details. This list is informational and not a complete interaction checker.
Interaction data compiled from DDInter (academic, CC-BY). Severity classification only - this is not a complete interaction checker and not medical advice.
Sources & citations
- [1]MHRA (UK) · PL369590008 · revised February 28, 2025
- [2]Health Canada (DPD) · 02457717 · revised March 22, 2025
- [3]FDA DailyMed · 00307f42-748d-42… · revised December 18, 2025 [PDF]
- [4]European Medicines Agency · EMEA/H/C/000555 · revised July 4, 2025
- [5]OpenFDA adverse-event reports (US), 12 months ending June 4, 2026.
Information on this page is compiled from public regulatory records. Drugvu is not affiliated with any regulator or pharmaceutical manufacturer. This is not medical advice. Always consult a qualified healthcare professional.