Obimetry is an iron-free bolus for use in cows just after calving.

Its composition is varied: 
- Magnesium pidolate is an essential element for the mobilization of bone calcium and muscle contraction 
- Sorbitol contributes to better liver integrity 
- Artemisia is used because of its uterotonic properties 
- The oil clove essential oil is recognized as uterotonic, facilitating the emptying of the uterus 
- Tea tree essential oil is used during non-deliveries, metritis and vaginitis 
- Cinnamon essential oil is used for its antibacterial actions and its action on the uterus

Obimétri is to be distributed just after calving.