A remedy possessing the property of preventing the return of periodic paroxysms, or exacerbations, of disease, as in intermittent fevers.

This constituent counteractshe effects of periodic diseases (intermittent) like malaria. Herbs in this category include angelica, blue vervain, boneset, chinchone, eucalyptus, golden seal and willow.

Preventing the return of recurrent fevers, e.g. malaria