Patent ID: 8399017

Claim:
A composition for oral administration, in tablet form, of magnesium with progressive release, comprising: a matrix constituting a core comprising (A) 90 to 110 parts by weight of magnesium, the source of magnesium being MgCl 2 .9/2H 2 O, (B1) 180 to 190 parts by weight of hydroxypropylmethylcellulose, (B2) 19.8 to 22.2 parts by weight of glyceryl behenate, (C1) 10 to 12 parts by weight of lactose, and (C2) 10 to 12 parts by weight of colloidal silica; and a film coating of (D) 15 to 75 parts by weight of a substance selected from shellac, cellulose ethers and mixtures thereof, wherein the composition exhibits, in vitro after 2 h in a 0.1N HCl medium, a rate of dissolution (δ) of the magnesium comprised therein of greater than or equal to 20% and less than or equal to 60%.