Bioavailability of Oyster Shell Electrolysate

Balance studies were conducted on 4 normal elderly subjects, 2 males and 2 females, ranging in age between 66 and 86 years in order to compare the bioavailability of oyster shell electrolysate with that of calcium carbonate and calcium lactate, in a crossover design. In each subject, 600 mg oyster shell electrolysate was more effective than calcium carbonate or calcium lactate containing the same 600 mg calcium to restore the negative calcium balance found on 600 mg/day calcium intake, suggesting a better bioavailability of oyster shell electrolysate than the two kinds of calcium salts.