The present invention describes a method for preparing a polymannan extract from freeze-dried aloe powder. The polymannan extract of the present invention is further used to formulate a sterile injectable formulation for the treatment of one or more cancers, leukemias and lymphomas, prostate cancer, breast cancer, and colon cancer, immune diseases, particularly immune related neoplasms, acquired immune deficiency syndrome, and hepatitis C.本發明描述一種自冷凍乾燥的蘆薈粉末製造多聚甘露糖萃取物之方法。本發明多聚甘露糖萃取物係進一步用以調配無菌可注射調配物，以治療一或多種癌症(白血病及淋巴瘤、前列腺癌、乳癌、及結腸癌)、免疫疾病(特定言之與免疫相關之腫瘤、後天免疫不全症候群)、及C型肝炎。
