Texas Agricultural Extension Service â¢ Zerle L. Carpenter, Director â¢ The Texas A&M University System â¢ College Station,Texas. Porcine Reproductive and Respiratory. Syndrome (PRRS) is rapidly gaining importance. as one of the most economically significant dis-. eases to keep out of Texas swine herds. In late 1992, a large swine herd in Texas. became infected with PRRS virus. The results.
If you take dietary supplements, chances are you are also taking Silicon Dioxide which is often contained within most supplements. Silicon Dioxide is an anti-caking agent that may account for up to 3% of a vitamin formula.
Many natural calcium carbonate preparations such as oyster shells or bone meal contain some lead. The low lead levels in calcium supplements are unlikely to be a health risk because calcium blocks lead absorption. Calcium citrate is well absorbed in the fasting state. Calcium doses above 500 mg are not absorbed as well as smaller doses, so large doses of supplements should be taken in divided doses (eg, in the morning and evening).