LDDs are only available at specialty pharmacies and not retail pharmacies like CVS or Walgreens.
GoodRx coupons are not available at specialty pharmacies, but there might be other ways you can save on your prescription.
About nitisinone
NITISINONE treats tyrosinemia. It works by preventing the break-down of the amino acid tyrosine, which stops the buildup of toxins in your body. This decreases symptoms. Changes to diet are often combined with this medication.