Both EquilinBASIC EquilinCOMFORT have been composed in order to have the possibility to safely feed it to any horse and in addition to any diet. In case only forage is being fed, it depends on the quality of this forage if the diet is complete (usually not), or if the diet has to be supplemented with vitamin and mineral pellets, for example the BALANCER. An analysis of your roughage will give you a definitive answer.