<unk>  is an antipsoriatic that is FDA approved for the treatment of severe psoriasis in adults. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include pruritus, arthralgia and paresthesia..
Acitretin
Tiocarlide
Moxisylyte
Etretinate
Bioallethrin
Tiamulin
Thiomersal
Sincalide