Novartis Consumer Health SA acting on behalf of all Marketing Authorisation holders (see Annex I) has applied for harmonisation according to Article 30 of 2001/ 83/ EC, as amended, of their products Calcium Sandoz 500 mg effervescent tablets (Calcium lactate gluconate + Calcium carbonate 1132 + 875 mg) and Calcium Sandoz 1000 mg effervescent tablets (Calcium lactate gluconate + Calcium carbonate 2263 + 1750 mg).