Calcarea Carbonica. Calc Carb. Calcarea Ostrearum. Ostrea Edulis, the European Oyster. Calcium Carbonate taken from the soft, snow-white calcareous substance found between the outer and inner harder shell of the oyster. Prepared by Trituration method, following Hahnemann’s Homoeopathic Proving. Chief remedy of the calcium compounds and is one of the greatest of Hahnemann’s genius. This…

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