

Thyroid Care Nutrition Dry Food for Adult Cats
Product Description
Hill's Prescription Diet y/d Thyroid Care Chicken Flavor Dry Cat Food is a clinically formulated diet for adult cats dealing with hyperthyroidism. It contains controlled levels of iodine to help balance thyroid hormones, while also supporting urinary health and overall wellness. Made with trusted ingredients, this complete and balanced nutrition is most effective when fed exclusively as your veterinarian advises.
Benefits
- Thyroid Support: Clinically shown to decrease thyroid hormone production within 3 weeks when fed as the sole nutritional source.
- Urinary Protection: Promotes a urinary environment that reduces the risk of calcium oxalate crystal and struvite formation.
- Heart & Kidney Care: Controlled phosphorus and reduced sodium help support kidney and heart health in adult cats.
- Lean Muscle Support: Fortified with L-carnitine to support lean muscle maintenance and help sustain an optimal body condition.
- Skin & Coat Health: Includes omega-6 fatty acids and fish oil to boost healthy skin and enhance coat appearance.
Variants
4 lb
8.5 lb
Ingredients
Corn Protein Meal, Whole Grain Corn, Chicken Fat, Powdered Cellulose, Egg Product, Chicken Liver Flavor, L-Lysine, Potassium Citrate, Dicalcium Phosphate, Lactic Acid, Fish Oil, Calcium Sulfate, Choline Chloride, Calcium Carbonate, Taurine, DL-Methionine, L-Tryptophan, Brewers Dried Yeast, L-Arginine, Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (Vitamin C), Niacin Supplement, Thiamine Mononitrate, Calcium Pantothenate, Vitamin A Supplement, Riboflavin Supplement, Pyridoxine Hydrochloride, Vitamin B12 Supplement, Folic Acid, Vitamin D3 Supplement, Biotin, Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganese Sulfate, L-Carnitine, Mixed Tocopherols, Natural Flavors, Beta-Carotene.
Guaranteed Analysis
Nutrient |
Amount |
Protein |
35.4% |
Fat |
22.2% |
Carbohydrate (NFE) |
32.3% |
Crude Fiber |
3.8% |
Calcium |
0.85% |
Phosphorus |
0.69% |
Potassium |
0.97% |
Sodium |
0.22% |
Magnesium |
0.056% |
Iodine |
0.2 ppm |
How to Use
Recommended-Usage Chart
Weight of Cat (lbs) |
Amount per Day (cups) |
Amount per Day (grams) |
6 (2.7 kg) |
3/8 |
45 |
8 (3.6 kg) |
1/2 |
65 |
10 (4.5 kg) |
1/2 |
65 |
12 (5.4 kg) |
5/8 |
80 |
14 (6.4 kg) |
2/3 |
85 |
16 (7.3 kg) |
3/4 |
95 |
18 (8.2 kg) |
3/4 |
95 |
Directions for Use
- Exclusive Feeding: Feed only this prescription diet and avoid treats or other foods to maintain proper iodine control.
- Gradual Transition: When transitioning your cat to a new food, it's best to do it slowly over a week. Begin by gradually adding more of the new food to their meals.
- Fresh Water Access: Always have clean, fresh water available during meals to help keep your cat hydrated and in good health.
- Veterinary Guidance: This diet should only be used under the veterinary guidance as it’s specifically designed for certain medical conditions.
- Regular Monitoring: Regular vet monitoring is required to ensure the diet is effective and to make any necessary adjustments to their feeding.
Disclaimer: This dosage information is provided by the manufacturer. Always consult your veterinarian before administering or adjusting any supplement for your pet.
Additional Information
Precautions
- Strict Diet Control: Avoid feeding other foods, treats, or flavored medications that may interfere with iodine restriction effectiveness.
- Not For All Cats: Not suitable for kittens, pregnant, or nursing cats due to specific nutritional requirements.
- Follow Vet Advice: Always make sure to follow veterinary guidance to manage thyroid issues safely and effectively.
Possible Side Effects
- Nutritional Imbalance Risk:Combining this food with other foods could diminish its effectiveness and interfere with proper thyroid hormone management.
- Adjustment Period: Some cats may take a while to adapt to their new diet during the early transition phase.
Storage Information
- Store In Cool Place: Keep the food in a cool, dry place to maintain nutritional quality and freshness.
- Seal Properly: Make sure the bag is sealed firmly after each use to keep out moisture and contamination.
- Keep Away From Pets: Store packaging safely out of reach of pets and children to avoid accidental ingestion hazards.
Shipping & Return
We offer ground, express, priority, and international delivery; see our shipping policy for details.
For return instructions or product concerns, please refer to our detailed refund policy.
Prescription items are NON-RETURNABLE and NON-REFUNDABLE.
Frequently Asked Questions
Q1: Can Hill's Prescription Diet y/d be fed with other foods or treats?
Ans: No, this diet must be fed exclusively to maintain its effectiveness. Even small amounts of other foods, treats, or flavored medications can interfere with iodine restriction and reduce its ability to manage thyroid hormone levels properly.
Q2: How long does it take to see results with this cat food?
Ans: Clinical nutrition in this formula has been shown to reduce thyroid hormone levels within approximately 3 weeks when fed exclusively. Consistent feeding and avoiding other food sources are essential to achieve and maintain these results effectively.
Q3: Is this food suitable for all cats?
Ans: This product is specially formulated for adult cats dealing with hyperthyroidism and should only be administered under the guidance of a veterinarian. It's not appropriate for kittens or for pregnant or nursing cats, as their nutritional needs are quite different.
Q4: Can I mix dry and wet versions of this diet?
Ans: Yes, both dry and canned versions of this prescription diet can be fed together or separately. However, they must be the only food given to ensure proper iodine control and maintain the effectiveness of thyroid management.
Q5: Does this food support any other health benefits?
Ans: Yes, in addition to thyroid support, this formula promotes urinary health by reducing crystal formation risk and supports heart, kidney, skin, and muscle health through balanced nutrients and added L-carnitine and fatty acids.
This Shipping Policy explains how orders are processed, shipped, tracked, and delivered.
1. Shipping Origin and Fulfillment
Orders are dispatched from our U.S.-based fulfillment center. We deliver to eligible addresses within the United States and to eligible international destinations shown at checkout.
If a destination, shipping service, or product is not eligible for delivery, checkout will not offer that shipping option.
2. Order Processing Time
Orders are generally processed within 1–5 business days before shipment. Processing time is separate from carrier transit time.
Our order cut-off time is 6:00 PM Pacific Time (PT). Orders placed after the cut-off time, on weekends, or on applicable holidays begin processing on the next business day.
Processing may include order verification and preparation for shipment.
3. U.S. Shipping Methods, Costs, and Transit Times
For eligible U.S. addresses, our current shipping options are:
- Priority Shipping: $5.99 — estimated carrier transit time of 1–2 business days after shipment.
- Standard Shipping: $2.99 — estimated carrier transit time of 3–6 business days after shipment.
- Free Shipping: $0 — estimated carrier transit time of 5–8 business days after shipment.
Total estimated delivery time includes both the 1–5 business day processing period and the applicable carrier transit time. The shipping service, cost, and delivery estimate available for your order are shown at checkout before payment.
4. International Shipping
We ship to eligible international destinations. Available international shipping services, shipping charges, and estimated delivery times vary by destination and are displayed at checkout.
For eligible international orders, applicable import duties and taxes are calculated and collected at checkout where required. When these charges apply, the order is shipped on a duties-and-taxes-paid basis so that the same import charges should not be collected again at delivery.
International delivery estimates may be affected by carrier operations, customs processing, local holidays, weather, or other events outside normal transit conditions.
5. Tracking
When tracking is available, you will receive shipment confirmation with tracking information after the order has shipped. Please allow up to 48 hours for tracking information to become active after the carrier receives the shipment.
6. Address Accuracy and Changes
Please review your shipping address carefully before submitting an order. If you notice an address error, contact us as soon as possible. We will try to help before shipment, but an address change cannot be guaranteed once fulfillment or carrier processing has begun.
Additional carrier or re-delivery charges resulting from an incorrect or incomplete address may be the customer's responsibility where permitted by law.
7. Delayed or Lost Shipments
If your shipment has not arrived within the estimated delivery timeframe, please contact us. We will review the tracking information, work with the carrier when necessary, and assist with an appropriate resolution based on the circumstances.
Delivery estimates are not guarantees and may be affected by carrier delays, weather, public holidays, customs processing, or other transportation disruptions.
8. Damaged, Defective, or Incorrect Deliveries
If an item arrives damaged, defective, or incorrect, contact us within 7 calendar days after confirmed delivery. Please include your order number and clear photos of the item, packaging, and shipping label when relevant.
Approved cases are handled under our Return & Refund Policy, including return-shipping assistance when the issue is our responsibility.
9. Policy Updates
We may update this Shipping Policy when our shipping services or operating requirements change. The current version will be posted on this page.
10. Contact Us
If you have questions about shipping or an order in transit, please use our Contact page or the current contact information displayed in the website footer.
This Return & Refund Policy explains when a return is eligible, how to send an item back, who pays return shipping, and how approved refunds are processed.
1. Return Window
You may request an eligible return within 30 days after confirmed delivery. Return requests submitted after the 30-day period are not accepted unless applicable law requires otherwise.
2. Return Eligibility
To qualify for a standard return, the item must generally be:
- Unused, unwashed, and in its original condition.
- Returned with the original packaging, tags, accessories, manuals, and other included components, when applicable.
- Not specifically identified as final sale or non-returnable before purchase.
Products that show use, alteration, avoidable damage, missing components, or other conditions outside the eligibility requirements may be ineligible for a refund.
3. Product-Specific Non-Returnable Items
Some products may be non-returnable for hygiene, safety, customization, final-sale, or other product-specific reasons. Any such restriction will be disclosed on the product page or before purchase when applicable.
4. No Direct Exchanges
We do not provide direct exchange service. If you want a different item, size, color, model, or version, return the eligible original item under this Policy and place a new order separately.
5. How to Start a Return
Returns are handled by mail. Before sending an item back, contact our customer support team through the Contact page or the current contact information displayed in the website footer. Please provide:
- Your order number.
- The item or items you want to return.
- The reason for the return.
Returns sent without required return authorization may be delayed or refused.
6. Prepaid Return Label and Return Shipping Cost
For eligible mail returns, a prepaid return label is included in the package.
For a standard return made for customer-choice reasons, the actual carrier postage charged for use of the prepaid return label will be deducted from the approved refund. We do not charge a separate restocking fee.
If the return is required because the item arrived damaged, defective, or incorrect and the claim is approved, we cover the return-label cost.
If you choose not to use the provided label when an alternative return method is authorized, use a trackable shipping service and keep your shipping receipt until the return is completed.
7. Original Shipping Charges
Original outbound shipping charges are non-refundable for standard customer-choice returns, except where required by law. If the return results from an approved damaged, defective, or incorrect item, applicable shipping charges will be handled as part of the resolution.
8. Refund Review and Processing
After the returned item is received, we inspect it and notify you whether the refund is approved.
If approved, the refund is issued to the original payment method. We generally process an approved refund within 1–3 business days. After the refund is issued, your bank or card provider may require an additional 5–10 business days to post the funds to your account.
9. Damaged, Defective, or Incorrect Items
If an item arrives damaged, defective, or incorrect, contact us within 7 calendar days after confirmed delivery. Include your order number and clear photos of the item, packaging, and shipping label when relevant.
After review, we will provide an appropriate resolution. When a return is required for an approved claim, we cover the return shipping cost.
10. Refused or Undeliverable Shipments
If a shipment is refused or returned because of incorrect or incomplete customer-provided shipping information, actual carrier return, re-delivery, or related shipping charges may be deducted from an otherwise eligible refund where permitted by law.
11. Policy Updates
We may update this Return & Refund Policy when our return procedures or legal requirements change. The current version will be posted on this page.
12. Contact Us
If you need help with a return or refund, please use our Contact page or the current contact information displayed in the website footer.
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