Oke, dat heb ik gedaan en even gegoogled op 'Melaleuca alternifolia Extrakt' wat als werkzame stof vermeld stond. Dit is overigens beter bekend als tea tree olie, maar ik heb gewoon de naam gebruikt die op de website van cvvet vermeld stond.
Daarbij kwam ik op Wikipedia uit (http://en.wikipedia.org/wiki/Tea_tree_oil met de volgende gezondheidswaarschuwingen:
According to the American Cancer Society: "Tea tree oil is toxic when swallowed. It has been reported to cause drowsiness, confusion, hallucinations, coma, unsteadiness, weakness, vomiting, diarrhea, stomach upset, blood cell abnormalities, and severe rashes. It should be kept away from pets and children."
Some people can experience allergic contact dermatitis as a reaction to dermal contact with tea tree oil. Allergic reactions may be due to the various oxidation products that are formed by exposure of the oil to light and/or air.
In dogs and cats, death or transient signs of toxicity (lasting 2 to 3 days), such as depression, weakness, incoordination and muscle tremors, have been reported after external application at high doses.
One reported case of transient gynecomastia in a boy who was using a hair styling gel containing both lavender and tea tree oil suggests that tea tree oil may possess endocrine disrupting activity capable of leading to gynecomastia. Gynaecomastia resolved within a few months of stopping the product, and the Antiandrogen effects of lavender and tea tree oil were confirmed using human breast cancer cell lines.
If used in concentrations below 4% or particularly below 0.25%, tea tree oil may fail to kill bacteria and create selection pressure, which may result in them becoming less sensitive to tea tree oil and even some antibiotics in vitro.
Undiluted tea tree oil can cause some hearing loss when used in the ears of non-human animals; however, a 2% concentration has not been shown to have any lasting effect. It is not known whether the same is true for humans.
According to a new study from University of Western Australia, tea tree oil does not cause antibiotic resistance in some common bacteria that infect humans, contrary to previous reports.
Ik denk dat je van elk product, als je maar even zoekt op internet, wel allerlei enge bijwerkingen en waarschuwingen kan vinden. Maar vaak is het maar een klein percentage van de dieren die zoiets krijgt. Merk je dat je hond ergens niet goed op reageert, niet meer gebruiken. Maar heeft je hond nergen last van en werkt het middeltje verder perfect, tja, een hond vol vlooien is ook niet alles, dus als iets voor jouw hond goed werkt, lijkt het me geen bezwaar het verder te gebruiken.