<unk>  is a colony stimulating factor that is FDA approved for the treatment of anemia. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include Seizures, PRCA, allergy.
Darbepoetin alfa
Darbepoetin Alfa
Methoxy polyethylene glycol-epoetin beta
Leucovorin 
Levoleucovorin
Darbepoetin Alfa Injection
Pegfilgrastim
Hydroxyurea