Rx D3™ by Rx Vitamins for Pets – Liquid Vitamin D3 Support for Dogs & Cats
Rx D3™ by Rx Vitamins for Pets is a palatable vitamin D3 supplement for dogs and cats that provides pure cholecalciferol in a convenient liquid formula. Each 1 mL supplies 3,000 IU of vitamin D3, while each drop provides 100 IU, allowing precise administration for canine and feline patients.
The cholecalciferol is blended with MCT oil and diluted sufficiently for use in animals as small as 4 kg. This liquid vitamin D3 for pets is intended for veterinarian-guided supplementation when testing indicates a need for additional vitamin D3.
Key Rx D3 Benefits
- Provides vitamin D3 for dogs and cats as cholecalciferol in an easy-to-administer liquid.
- Supplies 3,000 IU of vitamin D3 per 1 mL and 100 IU per drop for flexible dosing.
- Supports normal vitamin D status when supplementation is recommended following appropriate testing.
- Uses MCT oil as the only other ingredient in the formula.
How Rx D3 Works
Vitamin D3, or cholecalciferol, is a fat-soluble nutrient involved in numerous normal physiological functions. Adequate vitamin D status helps maintain normal calcium and phosphorus metabolism and supports healthy bones, muscles, and immune function. Because vitamin D requirements and existing blood levels can differ between individual animals, Rx D3 is formulated as a concentrated liquid that allows the amount administered to be carefully adjusted. The formula provides cholecalciferol for pets in MCT oil, with each drop supplying 100 IU. Rather than relying on a generalized approach to supplementation, the manufacturer recommends vitamin D3 testing to establish a safe and effective dosage and subsequent retesting to help confirm that appropriate vitamin D3 levels are being maintained.
Key Functional Ingredients Include:
- Vitamin D3 (as cholecalciferol): Provides a concentrated source of vitamin D3 that helps maintain normal vitamin D status and supports healthy calcium and phosphorus utilization, bone and muscle function, and normal immune activity.
- MCT oil: Serves as the carrier for this vitamin D3 liquid supplement, allowing cholecalciferol to be delivered in a convenient drop format.
Rx D3 is formulated specifically for canine and feline patients. Because vitamin D3 is fat soluble and appropriate amounts depend on the individual animal's status, testing and veterinary supervision are particularly important when incorporating this formula into a pet's nutritional program.
Rx D3 Is Formulated For
- Dogs and cats whose veterinary assessment indicates a need for supplemental vitamin D3.
- Pet owners seeking a cholecalciferol supplement for dogs and cats that allows precise liquid administration.
- Veterinarian-guided nutritional programs that use vitamin D3 testing and follow-up monitoring to individualize supplementation.
Supplements support your health but do not replace a balanced diet. Always check with your healthcare practitioner if you have doubts about a new supplement. Or you may book a FREE product consultation with Holistic Health Partners, led by Carolyn Mulally BS, RN, HN-BC. You may also wish to explore our other Vitamin D Supplements, Bone Joint and Muscle Support Supplements, and Calcium collections.
Recommendation: Rx D3 may be appropriate when laboratory testing and veterinary evaluation indicate that a dog or cat needs vitamin D supplementation for pets. Vitamin D3 testing is recommended to establish a safe and effective dosage, with retesting in 8–10 weeks to help ensure vitamin D3 sufficiency.
Serving Size: 1 ml
Servings Per Container: 60
Vitamin D3 (as cholecalciferol) ... 3,000 IU
Per one drop ... 100 IU
Other Ingredients: MCT oil
Storage: Store at room temperature out of direct sunlight.
Frequently Asked Questions About Rx D3
What are the benefits of Rx D3?
Rx D3 provides a concentrated liquid source of vitamin D3 as cholecalciferol for dogs and cats. Vitamin D3 helps maintain normal calcium and phosphorus metabolism and supports healthy bones, muscles, and immune function. The liquid format provides 3,000 IU per 1 mL and 100 IU per drop, making it possible for a veterinarian to individualize the amount according to an animal's needs. The formula uses MCT oil as its carrier and is diluted sufficiently to accommodate canine and feline patients as small as 4 kg.
Who should take Rx D3?
Rx D3 is intended for canine and feline patients when veterinary assessment and vitamin D testing indicate that supplementation is appropriate. It is not a general human vitamin D supplement and should be used with professional guidance because an animal's ideal amount depends on factors such as current vitamin D status and individual needs. The manufacturer recommends vitamin D3 testing to establish a safe and effective dosage and retesting in 8–10 weeks to help ensure vitamin D3 sufficiency. Your veterinarian can determine whether Rx D3 is suitable for your pet.
Are there any side effects of taking Rx D3?
Vitamin D3 should be administered carefully because it is a fat-soluble vitamin, and excessive intake can be harmful. Rx D3 therefore should be used according to veterinarian-guided dosing rather than given indiscriminately. The manufacturer recommends testing to establish an appropriate amount and follow-up testing to help ensure vitamin D3 sufficiency. Keep the product out of reach of children and animals, and contact a health professional immediately in case of accidental overdose. If you have questions about your pet's response to supplementation, consult your veterinarian before adjusting the amount administered.
How does Rx D3 support overall health?
Rx D3 helps maintain adequate vitamin D3 status by supplying cholecalciferol in a precisely measurable liquid form. Vitamin D3 contributes to normal calcium and phosphorus utilization, which supports healthy skeletal and muscle function. It also participates in normal immune and cellular functions throughout the body. Because vitamin D status can vary considerably among individual dogs and cats, the combination of targeted supplementation, appropriate testing, balanced nutrition, and veterinary care provides a more individualized approach to nutritional support. Follow-up testing can help a veterinarian determine whether the animal's vitamin D3 level is being appropriately maintained.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
