Background: Nowadays the extra amounts of some elements above the standard level can affect the human health among them are Florid that is used in toothpaste. The aim of this study was to study the effect of Florid on Iron metabolism in rat for short and long terms.

Materials and Methods: Florid (100, 200 and 300 ppm) was added to the rat drinking water. One control group is also selected with no florid in the drinking water. This study was undertaken in different time periods (5-88 days). After the decapitation, blood samples were collected for further experiments. Some parameters related to Iron metabolism were measured using laboratory standard methods.

Results: Results indicate that, in short term, no significant difference was seen between the control and experimental groups. In the second time period (22 days), a significant difference was seen between the control and other groups. Finally, in the third group (44 and 88 days Florid) the decreasing of hematocrit level up to 10-12 percent was obtained. Elevation in serum TIBC and reduction in serum iron and also copper was seen.

Conclusion: It is concluded that the extra consumption of Florid in toothpaste may cause damage to iron related parameters when it used for long period of time.