Patent ID: 6926912

Claim:
A method for treating hyperphosphataemia, in an animal in need thereof, which comprises administering to said animal, a therapeutically effective amount of a solid mixed metal compound having a phosphate binding capacity, and comprising the compound obtained as a precipitate from a solution of a mixture of metallic salts, free from aluminum, and containing iron (III) and at least one additional metal selected from the group consisting of magnesium, calcium, lanthanum and cerium, said compound having a phosphate binding capacity of at least 30%, as measured by any of the following tests methods (1) or (2), over a pH range of from 3 to 7; (1) adding 1 gram of said solid mixed metal compound to 25 ml of 40 mmol 1 −1 sodium phosphate buffer solution, homogenizing and gently agitating at room temperature of 30 minutes, centrifuging at 3000 rpm for 5 minutes, filtering through 0.22 μm millipore filter and measuring the soluble phosphate in the supernatant thus produced; (2) adding 1 gram of said solid mixed metal compound to 25 ml of 20 mmol 1 −1 sodium phosphate buffer solution, homogenizing and gently agitating at room temperature for 30 minutes, centrifuging at 3000 rpm for 5 minutes, filtering through 0.22 μm millipore filter and measuring the soluble phosphate 1 the supernatant thus produced.