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).