Below are the main rubriks (i.e strongest indications or symptoms) of Phosphorus in traditional homeopathic usage, not approved by the FDA.
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Phosphorus irritates, inflames and degenerates mucous membranes, irritates and inflames serous membranes, inflames spinal cord and nerves, causing paralysis, destroys bone, especially the lower jaw and tibia; disorganizes the blood, causing fatty degeneration of blood vessels and every tissue and organ of the body and thus gives rise to hemorrhages, and hematogenous jaundice.
Third to thirtieth potency. Should not be given too low or in too continuous doses. Especially in tuberculous cases. It may act as Euthanasia here.