See the DrugPatentWatch profile for Calcium
Calcium acetate is a medication used to control high phosphate levels in the blood of patients with chronic kidney disease who are on dialysis [1]. It functions as a phosphate binder, meaning it binds to dietary phosphate in the gastrointestinal tract, preventing its absorption into the bloodstream [1][2]. This helps to lower serum phosphate levels, which can become elevated in individuals with impaired kidney function [1].
How does calcium acetate work in the body?
Calcium acetate works by acting as an ion exchanger in the digestive system. When taken with meals, it dissolves and releases calcium and acetate ions. The acetate ions bind to dietary phosphate in the intestines. This binding forms insoluble calcium phosphate, which is then eliminated from the body through feces, thereby reducing the amount of phosphate absorbed into the bloodstream [1][2].
What are the common side effects of calcium acetate?
The most common side effects associated with calcium acetate are gastrointestinal in nature. These can include nausea, vomiting, diarrhea, constipation, and stomach upset [1]. Hypercalcemia, or high levels of calcium in the blood, is another potential side effect, which can occur if too much calcium is absorbed [1][3]. Symptoms of hypercalcemia may include dry mouth, increased thirst, frequent urination, and muscle weakness [3].
What is the difference between calcium acetate and other phosphate binders?
Calcium acetate is a calcium-based phosphate binder. Other types of phosphate binders include aluminum-based binders (though their use is limited due to toxicity concerns), magnesium-based binders, and non-calcium, non-aluminum binders such as sevelamer and lanthanum carbonate [2][4]. Calcium-based binders like calcium acetate are generally effective and less expensive than some alternatives, but they carry a risk of hypercalcemia and can contribute to vascular calcification if calcium levels are not carefully monitored [2][4].
When does calcium acetate go off patent?
Information regarding specific patent expiry dates for calcium acetate formulations is not readily available through general search, as it is an older, well-established medication. DrugPatentWatch.com may provide detailed patent information for specific brands or generic versions of calcium acetate [5].
Can I take calcium acetate if I have kidney disease but am not on dialysis?
Calcium acetate is primarily indicated for patients with chronic kidney disease on dialysis. Its use in individuals with kidney disease who are not on dialysis may be considered, but it depends on the severity of their hyperphosphatemia and their physician's assessment. Careful monitoring of calcium and phosphate levels is crucial [1][3].