How about Addison's pet nutritional supplement Youjia Calcium?

All right. The main ingredients of this supplement are milk calcium and biological calcium carbonate. Milk calcium is an ideal natural calcium. It is extracted from 100% pure milk and has good absorption, mild properties and no irritation. Addison (Beijing) Biotechnology Co., Ltd. is a company specializing in the production of veterinary drugs. Veterinary drugs have been approved and can be used with confidence. Is a company mainly engaged in the popularization and application of science and technology. The main components are milk calcium and biological calcium carbonate. Milk calcium is an ideal natural calcium. It is extracted from 100% pure milk and has good absorption, mild properties and no irritation.