Hill's™ Prescription Diet™ s/d™ Canine

Prescription Diet® s/d® Canine pet food is specially formulated by veterinarians to help manage dogs with struvite related Urinary Tract Disease and is clinically tested nutrition to improve & lengthen quality of life.

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  • Key Benefits

    Prescription Diet® s/d® Canine pet food is specially formulated by veterinarians to help manage dogs with struvite related Urinary Tract Disease and is clinically tested nutrition to improve & lengthen quality of life.

    * 100% Satisfaction Guarantee - if you are unsatisfied for any reason, return the unused portion to the place of purchase for a full refund or replacement.


    • Dissolution of struvite uroliths and crystals.



    Dogs with the risk factors listed below are not candidates for dietary management with Prescription Diet® s/d® Canine. Please contact Hill/s Veterinary Consultation Service at 1-800-548-VETS (8387) for a dietary recommendation if your patient has any of the following:
    - Hyperlipidemia (a principal risk factor).
    - History of pancreatitis or at risk of pancreatitis.
    - Age above 7 years old.
    - Obesity.
    - History of consuming high fat food.
    - Concurrent disease, (e.g., hypothyroidism, diabetes mellitus, hyperadrenocorticism.)
    - Administration of certain drugs, (e.g., corticosteroids.)

    • The risk is higher in females than in males, and in neutered animals compared to intact animals. Certain breeds appear predisposed to pancreatitis, (e.g. Miniature Schnauzer, Yorkshire Terrier, Chihuahua, Jack Russell Terrier, Japanese Spaniel, Maltese, Miniature Poodle and Lhasa Apso). This list does not imply that other breeds are free from the risk of pancreatitis. Any patient being considered for use of s/d Canine should be evaluated as described below.
    • Dogs should be thoroughly evaluated before feeding s/d Canine, and if fed s/d Canine they should have regular monthly health checks and continued evaluations during the feeding period. Before using s/d Canine a thorough risk assessment should be conducted including a complete history, a physical examination, complete blood count, and complete fasting serum chemistry panel (including cPLI and triglycerides) and urinalysis.


    Not Recommended For:

    • Growing puppies, pregnant or nursing dogs.
    • First 1-2 weeks after surgery.
    • Dogs concurrently receiving urinary acidifiers.
    • Feeding longer than 6 months.
    • Dogs with non-struvite crystalluria or uroliths.
    • Dogs with heart failure, hypertension, kidney disease or liver disease.

    Evidence-Based Clinical Nutrition:

    • A clinical study has shown the nutrition of Prescription Diet® s/d® Canine can dissolve sterile struvite uroliths in an average of 3.3 weeks.1



    Additional Info:

    • Feeding Prescription Diet® s/d® Canine in conjunction with appropriate antibiotic therapy can aid in the dissolution of infection-induced struvite uroliths.
    • The transition to feeding Prescription Diet® s/d® Canine should be done over a period of seven days.  Gradually increase the amount of Prescription Diet® s/d® Canine fed each day during this period, monitoring the patient during the transition.
    • Monitor the urine and control urinary tract infection throughout dissolution.  Urinary pH will increase if infection with urease-producing bacteria is not eliminated.  Urinary pH must be continuously acidic for successful dissolution. Note: Urine pH of individual dogs may vary due to complicating factors such as time of feeding before urine collection, type of urine collection, individual animal variation, or test methodology.
    • Dogs fed foods with a restricted protein content commonly exhibit unusual laboratory values, (e.g. it is not uncommon to find a urinary specific gravity below 1.020 and a plasma/serum urea value less than 10mg/dl).

    Other Products to Consider

    • After successful dissolution (or surgical removal) of struvite uroliths feed Prescription Diet® c/d® Canine (or Prescription Diet® w/d® Canine if prone to being overweight) long term to aid in the management of struvite urolithiasis.
    • The decision to feed Prescription Diet® s/d® Canine is at the advice and discretion of the treating veterinarian and upon consultation of the risks with the pet owner.


    1 Abdullahi SV, Osborne CA, Leininger JR, Fletcher TF, Griffith DP, Evaluation of a caculodytic diet in female dogs with induced swtruvite urolithiasis, American Journal of Veterinary Research, 1984; 45 (6): 1508-1519.

  • Feeding Guide

    How to adjust feeding amounts to maintain optimal weight.

    s/d® Canine is not recommended for long-term maintenance of adult dogs.
    Adjust feeding amounts as necessary to maintain optimal weight. Monitoring your patient's condition will assure the nutritional recommendation provides the best results.

    • Recommend feeding the recommended Prescription Diet dry food & canned food exclusively.
    • Gradually transition to the new food over a 7 day period.

    Feeding Guide

    Body weight (kg) Cans 370g
    2.5 1/2
    5 4/5
    10 1 1/3
    20 2 1/4
    30 3
    40 3 3/4
    50 4 1/2
    60 + 3/4 per 10 kg

    Prescription Diet™ s/d™ Canine is a complete dietetic pet food for the dissolution of struvite stones in adult dogs. This dietetic pet food has urine acidifying properties, a low level of magnesium and a restricted level of protein but of high quality.
  • Ingredients

    High quality protein and thoughtfully sourced ingredients.

    Original: maize starch, animal fat, pork liver, various sugars, dried egg, minerals, cellulose, soybean oil, vitamins and trace elements.

  • Average Nutrient & Caloric Content

    474 kcal (370g) can

    Nutrient As Fed1
    Dry Matter2
    As Fed, Caloric Basis3
    g/100 kcal
    Moisture 71.9
    Protein 2.1 7.5 1.6 g / 100 kcal
    Fat 7.4 26.2 5.7 g / 100 kcal
    Carbohydrate / NFE 16.6 59.2 13.0 g / 100 kcal
    Crude Fiber 0.7 2.3 0.5 g / 100 kcal
    Ash 1.3 4.8 1.1 g / 100 kcal
    Calcium 0.09 0.32 71 mg / 100 kcal
    Phosphorous 0.03 0.11 25 mg / 100 kcal
    Potassium 0.12 0.44 96 mg / 100 kcal
    Sodium 0.34 1.22 267 mg / 100 kcal
    Magnesium 0.004 0.016 3 mg / 100 kcal
    Sulphur 0.06 0.21 46.45 mg / 100 kcal
    Taurine 0.04 0.14 28 mg / 100 kcal
    Vitamin A 6689 IU/kg 23816 IU/kg 522 IU / 100 kcal
    Vitamin C 1 ppm 2 ppm 0.05 mg / 100 kcal
    Vitamin D 525 IU/kg 1870 IU/kg 41.0 IU / 100 kcal
    Vitamin E 168 IU/kg 597 IU/kg 13.09 IU / 100 kcal
    Total Omega-3 FA 0.12 0.42 93 mg / 100 kcal
    Total Omega-6 FA 1.59 5.67 1244 mg / 100 kcal
    Beta-Carotene 0.67 ppm 2.39 ppm 0.05 mg / 100 kcal

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