Overview Dexasone Injection is an anti-inflammatory agent that maybe used as a supportive therapy in inflammatory conditions such as arthritic conditions, snake bites, acute mastitis, shipping fever, pneumonia, laminitis and retained placenta. An anti-inflammatory agent that maybe used as a supportive therapy in inflammatory conditions such as arthritic conditions, snake bites, acute mastitis, shipping fever, pneumonia, laminitis and retained placenta.