Veterinary compositions for the treatment and/or prevention of protozoan diseases and methods of preparation thereof

A method of manufacturing a veterinary composition to treat and/or prevent protozoan diseases in animals, the method comprising:

• a) mixing at least one essential oil, and an organic acid or a mixture of organic acids at a ratio of 80:1 to 1:80 by weight, the essential oil including cedar oil, tea oil, cardamom oil, lavender oil, cubeb oil, eucalyptus oil, mint oil, juniper oil, cypress oil, lemongrass oil, spruce oil, pine oil, fir oil, Douglas fir oil, woanwood oil, caraway oil, cumin oil, patchouli oil, sage oil, Inula oil, tansy oil, angelica oil calamus oil, ginger oil, thyme oil, Origanum oil, rosemary oil, nutmeg oil, coriander oil, geranium oil, carrot seed oil, yarrow herb, or flower oil and the organic acid or the mixture of organic acids including valerian, isovalerian, lactic, butyric, acetic, propionic, formic, benzoic, pelargonic, salicylic, malonic, citric, phthalic, tartaric, oxalic, malic, shilcimic, fumaric, almond, cinnamic, or derivatives thereof;
• b) adding a catalyst and a metal including molybdenum, cobalt, nickel, chromium, zinc, bismuth, copper, manganese, selenium, iron, or salts or oxides thereof to form a mixture;
• c) heating the mixture to form a reaction product;
• d) allowing the reaction product to cool;
• and
• e) filtering the reaction product.