The invention relates to an equine inhalation mask, comprising at least one valveless combined inhalation and exhalation conduit, into which inhalant sources comprising respiration control elements and an energy supply that does not require supply lines are interchangeably integrated. A filter system is mounted on the outer end of the inhalation and exhalation conduit facing away from the head of the horse. Said system and the fact that the mask is effectively sealed when on the head of the horse prevent any escape of the aerosol into the environment, thus permitting a reliable inhalation therapy lasting several minutes under normal respiratory conditions.