Their use does not alter the symptoms but temporarily prevents their expression. The nosode must be given repeatedly and in increasing potency to be effective. If not given this way the original susceptibility returns unchanged. This is the major difference between nosodes and vaccines. The nosodes do not effect lasting changes.
Prevention leaves the susceptibility.
Cure removes the susceptibility permanently. Cure is the ultimate goal for the true healer. No I don't use or recommend nosodes but that is a personal belief. Many good Homeopaths advocate their use. Again this goes back to the preferences and the comfort zones of the care giver and the prescriber.