Medium-chain length fatty alcohols such as octanol, decanol, dodecanol, oranalogues thereof can be used as a stimulator of hematopoiesis, hematopoieticstem cell proliferation, and/or proliferation of one or more of the progenitorsof red or white blood cells (e.g., erythrocyte, leukocyte, neutrophil, granulocyte,megakaryocyte, or any combination thereof)- It also relates to the treatmentof myelosuppression; in particular, this includes the treatment of anemia and/orneutropenia associated with chemotherapy and/or radiotherapy. Moreover,anemia arising from chronic renal failure or treatment of HIV-infected patientswith AZT (zidovudine), or other inhibitors of reverse transcriptase, can betreated. Furthermore, neutropenia arising from infections, hematologic diseases,or nutritional deficiencies can be treated. It also relates to reducing drugtoxicity and enhancing drug efficiency.