Virbac Cat Urology Dissolution& Prevention 1.5Kg

Virbac HPM — Cat Urology Dissolution & Prevention | 1.5kg | Veterinary Clinical Dry Cat Food

Dissolve existing struvite. Prevent recurrence. Virbac HPM Cat Urology Dissolution & Prevention is a veterinary clinical nutrition dry cat food specifically formulated for the active dissolution of struvite crystals and uroliths, and the long-term prevention of struvite recurrence. Where the Virbac HPM Urinary WIB formula provides balanced dual protection against both struvite and calcium oxalate crystals, the Dissolution & Prevention formula is a struvite-targeted clinical diet — more aggressively formulated for urine acidification and mineral restriction to actively dissolve existing struvite deposits and prevent new struvite formation. This is the formula prescribed when struvite crystals have been confirmed by urinalysis or imaging — the clinical diet that works actively to resolve the existing crystal burden while simultaneously preventing recurrence. Struvite is the most common urinary crystal type in cats — and dietary dissolution is the preferred first-line treatment for struvite uroliths, avoiding the need for surgical removal in most cases. 1.5kg — the struvite dissolution and prevention diet that resolves the problem and keeps it resolved.

Why Virbac HPM Cat Urology Dissolution & Prevention Is The Best Choice

• Active Struvite Dissolution — Formulated to actively dissolve existing struvite crystals and uroliths through urine acidification and mineral restriction — the dietary alternative to surgical urolith removal.
• Struvite Prevention — Maintains the urinary environment that prevents new struvite crystal formation after dissolution is complete — for long-term recurrence prevention.
• Urine Acidification — Targets a urine pH that dissolves struvite (which requires alkaline conditions to form and acidic conditions to dissolve) — the primary mechanism of dietary struvite dissolution.
• Magnesium & Phosphorus Restriction — Struvite is composed of magnesium ammonium phosphate — restricting these minerals reduces the substrate available for crystal formation.
• High Moisture Encouragement — Increasing urine volume dilutes mineral concentrations and flushes the urinary tract — supporting both dissolution and prevention.
• Struvite-Confirmed Indication — The appropriate choice when struvite crystals have been confirmed by veterinary urinalysis or imaging — more targeted than the WIB formula for confirmed struvite cases.
• Dissolution Without Surgery — Dietary struvite dissolution avoids the need for surgical cystotomy in most cases — a significant benefit for cat owners and cats alike.
• High Palatability — Clinical urinary diets must be consumed consistently for dissolution to occur — the Virbac HPM formula is formulated for high palatability.
• Virbac HPM — Veterinary Expertise — From one of the world's leading animal health companies.
• 1.5kg — The ongoing management size for the dissolution and prevention program.

(Visual asset placement: flat-lay of the Virbac HPM Dissolution & Prevention bag with the clinical branding prominent, or lifestyle photo of a comfortable, healthy cat — communicating the urinary health the clinical diet restores.)

Product Details & Features

Struvite — The Most Common Feline Urinary Crystal Struvite (magnesium ammonium phosphate, MgNH₄PO₄·6H₂O) is the most common urinary crystal type in cats — accounting for approximately 40–50% of feline uroliths submitted for analysis. Understanding struvite formation and dissolution explains why the Dissolution & Prevention formula works:

How struvite forms: Struvite crystals form when urine contains:

• Alkaline pH (>7.0) — Struvite is insoluble in alkaline urine and precipitates readily
• High magnesium concentration — Magnesium is a structural component of struvite
• High ammonium concentration — Ammonium (from protein metabolism) is a structural component of struvite
• High phosphate concentration — Phosphate is a structural component of struvite
• Concentrated urine — High urine specific gravity increases the concentration of all crystal-forming minerals

Risk factors for struvite formation:

• Urinary tract infection (UTI) — Urease-producing bacteria alkalinize urine and increase ammonium — the most common cause of struvite in dogs (less common in cats)
• Alkaline diet — High-carbohydrate, plant-protein-heavy diets tend to alkalinize urine
• Concentrated urine — Inadequate water intake
• Female cats — Wider urethra allows bacteria to ascend more easily (UTI-associated struvite)

How struvite dissolves: Struvite is soluble in acidic urine — reducing urine pH below 6.5 causes existing struvite crystals to dissolve. This is the mechanism of dietary struvite dissolution:

1. The Dissolution & Prevention diet acidifies urine to pH 6.0–6.5
2. Existing struvite crystals dissolve in the acidic urine
3. Dissolved minerals are excreted in the urine
4. The crystal burden is progressively reduced over 4–12 weeks
5. The diet is continued to prevent recurrence

The Dissolution & Prevention Formula — Clinical Mechanism

Urine acidification — The primary dissolution mechanism: The Dissolution & Prevention formula contains ingredients that acidify urine — reducing pH to the range where struvite dissolves:

• DL-methionine — An acidifying amino acid that is metabolized to sulfate, which is excreted in urine and reduces pH
• Ammonium chloride — An acidifying salt that directly reduces urine pH
• Controlled protein sources — Animal proteins produce acidic metabolites that contribute to urine acidification

The target urine pH for struvite dissolution is 6.0–6.5 — sufficiently acidic to dissolve struvite while avoiding the extreme acidification that promotes calcium oxalate formation.

Magnesium restriction: Magnesium is a structural component of struvite — restricting dietary magnesium:

• Reduces the magnesium available for crystal formation
• Reduces the magnesium concentration in urine — lowering the saturation index for struvite
• Supports dissolution by reducing the mineral substrate that maintains crystal stability

Phosphorus restriction: Phosphate is a structural component of struvite — restricting dietary phosphorus:

• Reduces the phosphate available for crystal formation
• Reduces urinary phosphate concentration — lowering the struvite saturation index

Sodium — The Hydration Driver: Controlled sodium inclusion encourages water intake — increasing urine volume and diluting mineral concentrations. Dilute urine:

• Reduces the concentration of all crystal-forming minerals
• Increases urine flow — flushing the bladder more frequently
• Reduces the time minerals have to accumulate and crystallize

Dissolution Timeline — Clinical Expectations

Dissolution timeline varies based on urolith size, number, and individual cat response. Veterinary monitoring with urinalysis and imaging is recommended every 4 weeks during the dissolution phase.

Dissolution & Prevention vs. WIB — Choosing the Right Urinary Formula The two Virbac HPM urinary formulas serve different clinical purposes — choosing the right formula requires understanding the cat's specific urinary history:

Clinical recommendation:

• Confirmed struvite → Start with Dissolution & Prevention for active dissolution → Consider transitioning to WIB for long-term prevention after dissolution is confirmed
• Unknown crystal type → WIB (safer for unknown crystal history)
• Confirmed calcium oxalate → WIB (Dissolution & Prevention's acidification would worsen calcium oxalate risk)
• Mixed struvite + calcium oxalate history → WIB

When Dietary Dissolution Is Not Sufficient Dietary dissolution is effective for struvite crystals and small uroliths — but there are situations where veterinary intervention is required alongside or instead of dietary management:

• Urethral obstruction — A veterinary emergency requiring immediate catheterization — dietary management begins after obstruction is relieved
• Large uroliths — Very large struvite uroliths may require surgical removal or urohydropropulsion before dietary dissolution can complete
• Infection-associated struvite — If struvite is associated with a urinary tract infection, antibiotic treatment is required alongside dietary management
• No improvement after 12 weeks — If urinalysis and imaging show no improvement after 12 weeks of dietary dissolution, surgical intervention should be considered

Monitoring During Dissolution Veterinary monitoring is essential during the dissolution phase:

• Urinalysis every 4 weeks — Monitoring urine pH, crystal presence, and urine specific gravity
• Imaging every 4–8 weeks — Radiography or ultrasound to monitor urolith size reduction
• Body condition monitoring — Ensuring adequate nutrition during the clinical diet

(Visual asset placement: flat-lay of the Virbac HPM Dissolution & Prevention bag, or lifestyle photo of a comfortable cat using a litter box normally — communicating the urinary health restoration the clinical diet achieves.)

Specifications & Feeding

Feeding Guidelines

Divide daily amount into 2–3 meals. Always provide multiple sources of fresh water. Feed ONLY this diet during the dissolution phase — no treats or other foods that could alter urine pH or mineral balance.

Transition Guidelines

Serving Tips

• No treats during dissolution — Any food that alkalinizes urine or adds magnesium/phosphorus can slow or prevent dissolution — feed only the Dissolution & Prevention diet during the active dissolution phase
• Multiple fresh water sources — Water fountain strongly recommended — increased urine volume accelerates dissolution
• Wet food consideration — Adding Toro soup treats or Sheba Premium wet food alongside the dry diet significantly increases moisture intake — discuss with your veterinarian
• Monitor litter box — Watch for signs of straining, blood in urine, or reduced urine output — these require immediate veterinary attention
• Male cats — emergency awareness — Straining without urine production is a veterinary emergency
• Transition to WIB after dissolution — Consider transitioning to Virbac HPM Urinary WIB for long-term prevention after dissolution is confirmed — the WIB's balanced pH is safer for long-term use

The Complete Virbac HPM Urinary Range

Dissolve. Prevent. Restore. — Backed by petyard

At petyard, Virbac HPM Cat Urology Dissolution & Prevention is the struvite-targeted clinical diet we recommend for cat owners whose cats have confirmed struvite crystals or uroliths — urine acidification to dissolve existing struvite, magnesium and phosphorus restriction to eliminate the crystal substrate, and hydration encouragement to flush the urinary tract. The dietary alternative to surgical urolith removal in most struvite cases. 1.5kg of Virbac's veterinary precision, delivered fast across Egypt from petyard. Because your cat's struvite problem deserves the clinical diet that dissolves it — and Virbac HPM delivers exactly that.