swedish orphan biovitrum international ab - nitisinone - tyrosinemias - andre alimentary tract and metabolism products, - 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).