Parasitic diseases constitute one of the main problems affecting livestock; however the use of chemical
medicaments provides drug resistance residues in animal and environmental contamination. Changes
in production concepts require that food must be produced in hygienic conditions, per healthy animals
and that are not eliminating antibiotic residues, pesticides or other drugs. This scenario has favored
organic production and the use of medicinal plants. For the control of endoparasites, several studies
have published the benefits of Azadirachta indica A. Juss., Punica granatum Linn., Musa sp.,
Operculina hamiltonii G. DON., propolis, among others. However, despite the existence in- vitro studies
that demonstrate the pharmacological properties of phytotherapics, there is still need for clinical trials
to determine dosage and its effects in- vivo. Investigations of new bioactive natural substances can be
of great value for the control of animal health and food safety, which is particularly important for
organic production systems in which the use of chemical drugs is a limiting factor for certification.