Natural Option USA utilizes plant-based calcium from algae combined with just the right amounts of micronutrients. This unique combination allows your body to easily absorb the calcium, making the tablets more efficient, cost-effective, and healthier for you. We continually stay up to date with the latest research made by the most reputable scientific institutions. We use scientifically backed research to formulate each of our unique products, always prioritizing natural ingredients and customer fulfillment. Choose Natural Option for a speedy recovery!