The average Farydak cash price is about $70,562.17 for a supply of: Capsule 20 MG 30 pcs. Get our free Farydak coupon and be eligible to receive a discount. You can reduce your Farydak cost by up to 75% with our free Farydak discount card. Bring it to a participating pharmacy near you to save on your prescription medication.Farydak is the first histone deacetylase (HDAC) inhibitor available to patients with multiple myeloma. The U.S. Food and Drug Administration (FDA) has approved Farydak (panobinostat), an oral histone deacetylase (HDAC) inhibitor indicated for the combination treatment of patients with multiple myeloma who have received at least two prior regimens, including bortezomib and an immunomodulatory agent.