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Species affected: Cats, Dogs
Background: The male domestic cat is particularly prone to an obstruction consisting of crystallized mineral embedded within a proteinaceous matrix; this is often considered to be an immune-mediated phenomenon. Obstructions are considered an emergency requiring sedation and unblocking with a catheter.
Symptoms: Hematuria, pain, possible obstruction or frequent urination.
Diagnostics: Urinalysis, blood tests.
Special Notes: Struvite (Magnesium Ammonium Phosphate) and oxalate are the most common urinary calculi seen in small animals. In dogs, struvite crystals and stones are associated almost exclusively with bacterial infections and excessively alkaline urine. Oxalate stones are more commonly found in certain breeds including Bichons, Schnauzers, Yorkies, Shihtzu; these are seen with excessively acidic urine or administration of excessive doses of calcium. Small struvite stones can often be dissolved using diet modifications and supplements alone; oxalate cannot be dissolved. Stones may have a struvite covering but an oxalate core. In cats, struvite and oxalate stones are both common; their incidence increasing as the majority of cat owners began feeding commercial foods, especially dry foods. There are foods to help manage/prevent both types of stones in dogs and cats, and these are usually necessary even with supplements.
Principles for Supplementation:
Natural treatment can help break up struvite stones and prevent them from reforming, if they are not too large. Bacteria can be controlled with herbs if needed. Urinary pH should be repeatedly checked, to make sure the urine is not excessively alkaline or acidic.


Formulas: Dosage: Mechanism/Purpose:


1 capsule per 20 lb bid or
1 scoop per 20 lb bid

Helps support normal kidney function and urination flow.

Jin Cao Stone23

Cats: ¼-½ tablet bid
Dogs: ½-2 tablets bid or tid

Increases urine flow; dissolves stones.

With bacteria, add:
Akebia Moist Heat23

Cats: ¼-½ tablet bid
Dogs: ½-2 tablets bid or tid

Decreases inflammation, bactericidal; clears damp heat.

With struvite stones add: CranGuard28

Cats: ¼-½ capsule tid
Dogs: ½-2 capsules tid

Antibacterial; blocks attachment of bacteria to bladder wall, acidifies urine.

For chronic and recurrent stones: Small Animal Antioxidant12

Cats: 1 capsule sid
Dogs: 2 capsules/25 lb sid

Broad-spectrum antioxidant formula.

Section 1 - Canine and Feline Index of Pages


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