What Are Struvite Crystals?
Struvite crystals are a common type of urinary crystal found in cats, made up of magnesium, ammonium, and phosphate. When these minerals accumulate in the bladder, they can form crystals or stones that cause discomfort, urinary blockages, and infections — especially in male cats.
Signs Your Cat May Have Struvite Crystals
- Straining to urinate or urinating in small amounts
- Blood in the urine
- Frequent trips to the litter box
- Crying or signs of pain when urinating
- Licking around the urinary opening
The Role of Diet in Managing Struvite Crystals
Diet is one of the most effective ways to manage and prevent struvite crystals. A low-phosphorus, high-moisture diet helps dilute urine and reduce the mineral concentration that leads to crystal formation. Key dietary guidelines include:
- Low phosphorus: Reduces the building blocks of struvite crystals
- High moisture: Wet food or raw food increases urine volume, flushing the bladder regularly
- Controlled magnesium: Helps lower crystal-forming minerals
- Slightly acidic urine pH: Discourages struvite formation
Recommended Low-Phosphorus Foods for Cats
Browse our curated selection of low-phosphorus cat foods below, chosen to support urinary health and overall wellness.
For more pet health resources, visit Barbara's Pet Wellness Library.