The pill in the image is a Bee Pollen 250mg tablet performance enhancer specifically intended for veterinary use in chickens (poultry).

It is advertised for:

Boosting health and productivity in chickens, giving them an "advantage". 

Bee pollen in general has been studied for its potential to improve performance and carcass quality in chickens. 

It is also generally used as a natural supplement to potentially enhance immunity, foster blood circulation, and increase physical activities in animals.