Animal trypanosomoses, transmitted by tsetse flies are a major hindrance to livestock production in sub-Saharan Africa. In infested areas they reduce the livestock production by 50% in terms of meat and milk production. Animal traction is reduced significantly by trypanosomosis and hence the total agricultural production is also reduced by 10%. It is estimated that without the presence of tsetse flies 90 million additional cattle could be produced. To treat trypanosomosis, the most commonly used method is to apply trypanocidal drugs. The market of veterinary drugs in West Africa is estimated to be more than 14 million CFA. The proportion of trypanocidal drugs within the total of veterinary drugs varies between 20 and 50% depending on countries.