vitamin d3 supplement
Vitamin D3 is an essential fat-soluble vitamin. Normal formulation amounts are safe, but excess (above AAFCO upper limits) causes hypercalcemia, leading to calcification damage to kidneys, heart, and blood vessels. FDA has recorded multiple pet food recalls for D3 overages.
Other common names: cholecalciferol, vitamin d-3 supplement, vitamin d3, vit d3, 維生素D3, 膽鈣化醇, コレカルシフェロール
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Sources: ASPCA Animal Poison Control Center, FDA Center for Veterinary Medicine, veterinary literature. For reference only, not medical advice. If poisoning is suspected, seek veterinary care immediately.