monocalcium phosphate
Monocalcium phosphate is a common calcium and phosphorus source. It is more soluble than other calcium phosphates, so its phosphorus is absorbed faster. It is used at legal levels in complete pet foods and healthy pets do not need to avoid it; cats and dogs with chronic kidney disease (CKD) should choose low-phosphorus diets.
Other common names: calcium dihydrogen phosphate, 磷酸二氫鈣, リン酸二水素カルシウム
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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.