Melarsoprol dosage is as follows: For T b. gambiense: 2.2 mg / kg (maximum dose 180 mg) IV once a day for 10 days For T b. rhodesiense: 2 to 3.6 mg / kg IV once a day for 3 days; after 7 days, 3.6 mg / kg once a day for 3 days, followed 7 days later by another 3-day course at this dose In the US, eflornithine, nifurtimox, and melarsoprol can be obtained from the CDC.