Struvite stones are common in cats, usually caused by urinary tract infection, poor water intake and/or dietary imbalance. These hard bladder deposits can block urination, cause considerable discomfort and, if not addressed, become life-threatening — but they can be managed with the right diet. Virbac Veterinary HPM U1 Struvite Dissolution is a clinical dry food fed for 5 to 12 weeks to help break down and flush out struvite stones, and it can also help reduce the recurrence of oxalate stones. Built on the HPM philosophy, it's a low-carbohydrate, high-protein formula (44% protein, of which 90% is animal-origin, and 23% carbohydrates) that stimulates water intake and dilutes and acidifies urine for fast results. This is a therapeutic veterinary diet for short-term use and should be used under veterinary supervision.
Key Benefits
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Dissolves struvite stones — helps dissolve struvite stones in an average of 14 days, managing feline urinary tract disease.
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Stimulates hydration — high protein and sodium encourage water intake and increased urination, and help dilute and acidify urine for fast results.
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Low struvite RSS (<1) — analysed for a low relative supersaturation to effectively dissolve and help prevent recurrence of struvite crystals.
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Reduces urinary inflammation — a high level of omega-3 fatty acids (EPA + DHA) helps reduce lower urinary tract inflammation.
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Lowers future stone risk — binds phosphorus (chitosan) and includes potassium citrate to help limit oxalate crystals, with lowered carbohydrate intake.
Composition
Dehydrated pork and poultry proteins, potato starch, hydrolysed pork and poultry proteins, animal fats, minerals, peas, faba bean hulls, rice, beet pulp, linseed, brewer's yeast, fish oil, lignocellulose, psyllium fibre (Plantago spp.), fructo-oligosaccharides, hydrolysed crustacean (source of chitosan), chondroitin sulfate, Lactobacillus acidophilus.
Free from gluten, maize, wheat, soya, beef and egg (per pack). Contains crustacean-derived chitosan — note for shellfish sensitivities.
Key functional ingredients: EPA+DHA omega-3 and omega-6 (reduce lower urinary tract inflammation) · 44% high-quality protein (encourages drinking and urination) · Chitosan 800 mg/kg (phosphorus binder) · L-carnitine 540 mg/kg (fat metabolism) · Potassium citrate 0.3% (calcium oxalate binder).
Analytical Constituents (% as fed)
Moisture 5.5% · Protein 44% · Animal:vegetal protein ratio 90/10 · Fat 16% · Minerals 7.5% · Crude fibre 4% · NFE (carbohydrates) 23% · Starch 15% · Calcium 0.65% · Phosphorus 0.65% · Sodium 1.3% · Potassium 0.7% · Magnesium 0.08% · Chloride 1.8% · Sulphur 0.7% · Methionine + cystine 1.5% · Omega-6 2.5% · Omega-3 1% · EPA+DHA 0.3% · Metabolisable energy 385–397 kcal/100 g.
Urine acidification target pH 6.0–6.5 (per pack). Energy from protein 42% / fat 37% / NFE 21%.
Added ingredients: Bentonite 5 g/kg · Killed lactobacilli 7 mg/kg · Chitosan 800 mg/kg · L-carnitine 540 mg/kg · Potassium citrate 0.3%.
Vitamins & trace elements: Vitamin A 17,000 IU/kg · Vitamin D3 1,700 IU/kg · Vitamin E 610 mg/kg · Vitamin K3 0.22 · B1 11.2 · B2 8 · B3 113.4 · B5 14.5 · B6 7.6 · B8 0.15 · B9 1.9 · B12 0.046 mg/kg · Choline 1,760 mg/kg · Taurine 2,460 mg/kg · Copper 12 · Iodine 0.4 · Zinc 110 mg/kg.
Suitable For
Adult and senior cats for short-term (5–12 week) dissolution of struvite stones — under veterinary direction. Once stones have dissolved, transition to Virbac Veterinary HPM U2 Dissolution & Prevention for long-term prevention.
Only for adult/senior cats not diagnosed with chronic kidney disease or cardiac insufficiency. Do not use during growth (kittens/junior cats) or while pregnant or lactating.
Feeding Guidelines
Rations are based on the cat's current body weight and must be reviewed and adjusted every month. Always provide a generous supply of fresh drinking water. Follow your veterinarian's plan and the recommended feeding duration.
| Body weight (kg) |
Overweight (g/day) |
Normal* (g/day) |
Underweight (g/day) |
| 2 |
20 |
20 |
25 |
| 3 |
30 |
35 |
35 |
| 4 |
40 |
45 |
50 |
| 5 |
50 |
55 |
60 |
| 6 |
60 |
65 |
75 |
| 7 |
70 |
75 |
85 |
| 8 |
75 |
85 |
95 |
| 9 |
85 |
100 |
110 |
| 10 |
95 |
110 |
120 |
*Adult neutered indoor cat with optimal body weight.
Storage
Store in a cool, dry place; keep the resealable bag closed after opening to preserve freshness.
Important Information
- A therapeutic veterinary diet for short-term use (5–12 weeks) — use under veterinary supervision, and transition to U2 for long-term prevention once stones have dissolved.
- Not for cats with chronic kidney disease or cardiac insufficiency; not for kittens/junior cats or pregnant/lactating cats.
- Ration is based on current weight and must be reviewed monthly; ensure constant access to fresh water.
- Contains crustacean-derived chitosan; inform your vet of any known shellfish sensitivities.
Product Specifications
| Field |
Detail |
| Brand |
Virbac (Veterinary HPM) |
| Product |
Veterinary HPM U1 Urology Struvite Dissolution Cat Food |
| Type |
Therapeutic dry cat food (short-term struvite dissolution) |
| Duration |
5–12 weeks (short-term) |
| Key profile |
High protein (44%, 90% animal-origin), low carbohydrate, low struvite RSS (<1), urine acidification pH 6.0–6.5 |
| Energy |
385–397 kcal/100 g |
| Pack size |
1.5 kg (resealable) |
| Suitable for |
Adult & senior cats (vet-directed, short-term) |
| Not for |
CKD, cardiac insufficiency, kittens/junior, pregnant/lactating cats |
| Manufactured by |
Virbac Nutrition, Vauvert, France |
| Imported & Marketed by |
Virbac Animal Health India Pvt. Ltd, Borivali (East), Mumbai – 400066 |
| Country of origin |
France |
| GTIN / Barcode |
Not provided |
Why Buy From Pets Lifestyle
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FAQs
What is Virbac Veterinary HPM U1 Struvite Dissolution?
It's a short-term clinical dry cat food, fed for 5–12 weeks, that helps break down and flush out struvite bladder stones and can help reduce recurrence of oxalate stones.
How fast does it work?
It's formulated to dissolve struvite stones in an average of 14 days, with a low struvite RSS (<1); follow your vet's guidance on duration.
What's the difference between U1 and U2?
U1 is a short-term dissolution diet; once the stones have dissolved, U2 Dissolution & Prevention is recommended for long-term prevention.
Which cats should not eat it?
Cats with chronic kidney disease or cardiac insufficiency, kittens/junior cats, and pregnant or lactating cats. Use under veterinary guidance.
How does it help?
High protein and sodium stimulate drinking and dilute/acidify urine, omega-3 reduces inflammation, and chitosan and potassium citrate help lower future stone risk.
Where can I buy it in India?
You can buy Virbac Veterinary HPM U1 Struvite Dissolution online in India from Pets Lifestyle with convenient delivery.
