Rx D3
Starting At
$22.00
Rx D3
$22.00
Or save an extra 20% on your first order (up to $20) with Autoship*
$17.60
(save 5% on all recurring orders)
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Guaranteed lowest authorized price. Learn more.
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Guaranteed lowest authorized price. Learn more.
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Usually ships the same weekday before 3pm CT.
What are Rx D3 and Rx D3 Forte by Rx Vitamins for Dogs and Cats?
- Rx D3 is a nutritional supplement for dogs and cats that contains pure Vitamin D3 in the form of cholecalciferol.
- The cholecalciferol is blended with MCT oil and diluted sufficiently to enable safe usage in animals as small as 9 lbs.
- Rx D3 Forte is designed for dogs and cats with a greater deficiency or advanced dietary needs.
Why is Rx D3 given to cats and dogs?
- Vitamin D3 helps with calcium and phosphorus absorption in the body and helps support immune system health and function.
- Vitamin D3 is involved in the regulation of thousands of genes and helps prevent inflammatory diseases once it has been processed by the liver.
- Dogs and cats are unable to convert sunlight into Vitamin D and receive all their Vitamin D from food. Rx D3 supports the health of dogs and cats that are not getting enough Vitamin D in their diet.
What else should I know about Rx D3?
- There are about 1800 drops per bottle.
- Store at room temperature, out of direct sunlight.
What problems could my dog or cat have with Rx D3?
- Keep out of reach of children and animals.
- In case of accidental overdose, contact a health professional immediately.
- If animal's condition worsens or does not improve, stop product administration and consult your veterinarian.
How do you use Rx D3?
- Use as directed by your veterinarian.
- A vitamin D3 test using the VDI Laboratory test kit is recommended in order to establish a safe and effective dosage. Retesting in 8-10 weeks to ensure Vitamin D3 sufficiency is also recommended.
What is in Rx D3 and Rx D3 Forte?
Rx D3
- Active ingredients per 1 mL: 3000 IU of Vitamin D3 as cholecalfiferol.
- Active ingredients per 1 drop: 100 IU of Vitamin D3 as cholecalfiferol.
- Inactive ingredient: MCT Oil.
Rx D3 Forte
- Active ingredients per 1 mL: 15,000 IU of Vitamin D3 as cholecalfiferol.
- Active ingredients per 1 drop: 500 IU of Vitamin D3 as cholecalfiferol.
- Inactive ingredient: MCT Oil.
Will I get what I see in the picture?
- Rx D3 is a brand name. You will receive the exact brand that you request.
Is it important for my dog or cat to finish all of the Rx D3?
- Dogs and cats may use this product for different lengths of time. Please consult your veterinarian if you have any questions.
Who makes Rx D3?
- Rx D3 is made by the manufacturer Rx Vitamins.
Review Summary
46 total reviews
Rated 4.98 out of 5 stars
100% of respondents would recommend this to a friend
Ratings Distribution
45 5 star reviews
1 4 star reviews
0 3 star reviews
0 2 star reviews
0 1 star reviews
Reviews
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RX D3 Forte, 2 oz arrived!
From UndisclosedComments about Rx D3 Forte, 2ozMy fur baby was low in her vitamin D. They recommended this product, but the price was $30 more that what the cost was here. So naturally, I purchased here. The product arrived quickly and was wrapped in bubble wrap and very protected. I am very pleased and will continue to purchase any medications or products I can through you guys. Thank you.-
![RX D3 Forte, 2 oz arrived!]()
Relaxing in the sun!
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AWESOME
From UndisclosedComments about Rx D3 Forte, 2ozExcellent service and product……..my dog had dangerously low levels of D3 and this product virtually saved his life……his levels are now and have been within normal range since starting this product with the doctor's recommendation -
RxD3 Forte
From UndisclosedComments about Rx D3 Forte, 2ozBoth of my dogs - the bearded collie and Austrialian Labradoodle has low Vitamin D levels. they have been on RxD3 for a few years and their levels are now up to par. Excellent Product!-
![RxD3 Forte]()
Lily and Magnolid
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Vit D3 Forte is a tremendously assistance in Luke's healing
From UndisclosedComments about Rx D3 Forte, 2ozOur Precious 14 year old Dog Luke is dealing with a Adenosquamous carcinoma on his jaw. He had surgery to remove but is has grown back. After having a Vit D test, he was very low. The RX D3 Forte is helping him tremendously in his healing journey. -
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This medication really works
From UndisclosedComments about Rx D3 Forte, 2ozThe product was recommended by my dog Popcorn's vet. His D-3 levels were a bit low and just after a few weeks of giving him this supplement in his, he was back to normal. I recommend it to everyone I know has dogs.-
![This medication really works]()
Cool Dude Popcorn
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Has helped with Callies low vitamin D values.
From UndisclosedComments about Rx D3 Forte, 2ozHave been using Rx D3 Forte for years. An excellent product-
![Has helped with Callies low vitamin D values.]()
Our beautiful rescue, Callie Rose
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Healthy and Strong!
From UndisclosedComments about Rx D3 Forte, 2ozBear was vitamin D deficient. But with only 2 drops, (as directed by veterinarian) everyday on her favorite treat she is now fully sufficient. Vitamin D is extremely important to keep your fur babies immunity up! Great product!-
![Healthy and Strong!]()
@bear_with_me_003 loves her vitamin D! Keeps her healthy and strong so we can play fetch all day long!
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I use Vit D3 as preventive supplement.
From UndisclosedComments about Rx D3 2ozLow vit D is related to cancer. I have hed 2 dogs with cancer. They were German Shepard mix and I have learned that German Shepard inherit a week immune system. I give my dog vit D as preventive and si hope it helps. -
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This Vitamin D liquid has helped my dog!
From UndisclosedComments about Rx D3 2ozMy dog had low vitamin D, so her doctor informed me of this product and after using it daily her vitamin D levels are where they should be!! -
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Helps with low Vit D levels……just started but hope it helps
From UndisclosedComments about Rx D3 Forte, 2ozRecommended by our vet-
![Helps with low Vit D levels……just started but hope it helps]()
Chai - Our 14 y/o rescue American Cocker Spaniel
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Displaying Reviews 21 - 30
Q & A
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5 pound dog, how many drops and should it be daily??
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I ask for medication or vitamins to give my older cat for dry mouth. No where in the information does it mention dry mouth ???
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Rx Dx is a vitamin D3 supplement designed for dogs and cats with a deficiency or dietary needs. This product is not intended for dental care or oral conditions, including dry mouth. If your cat has dry mouth, please consult with your veterinarian. Your veterinarian can discuss and recommend the best treatment option for your cat’s needs
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Is the vitamin D supplement tasteless?
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According to the ingredients list on the product labeling, Rx D3 and Rx D3 Forte do not contain any flavoring.
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How long is the product good for? Do you go by the expiry date on the bottle or from the time of opening??
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The manufacturer of Rx-D3 goes by the expiration date listed on the bottom of the bottle regardless of opening date. If you have specific concerns about a particular product before you order, you may contact the pharmacy via email at [email protected].
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After testing, the lab recommended 2000 IU/day (0.75 on the dropper) for my dog, however the measurement on the dropper of 0.75 contains 30 drops which would be 3000 IU/day. Stick with the 20 drops to be sure??
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The Rx D3 contains 100 IU per drop. To achieve a dose of 2000 IU/day, 20 drops of the Rx D3 would have to be given. The Rx D3 Forte contains 500 IU per drop. The number of drops of the Rx D3 Forte formulation would be 4 drops to reach 2000 IU/day. Your veterinarian may be able to assist with more specific instructions.
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The difference between the RX d3 and RX D3 forte??
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The difference between these products is the amount of vitamin D. RX D3 contains 100 IU of vitamin D3 per drop, whereas RX D3 Forte contains 500 IU of vitamin D3 per drop.
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How soon can my dog eat after taking her daily drops of D3 Forte?
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Rx D3 can either be administered by mouth or mixed into your dog’s food. It is important to give this with a meal, not on an empty stomach for proper absorption. To ensure your dog receives the appropriate dose, you may consider mixing the dose in with a small amount of food prior to the main meal. Please consult your veterinarian with any further questions or concerns regarding the use of these medications for your dog.
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I have had this in the refrigerator. Does this change the potency or effectiveness??
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According to the manufacturer, refrigeration will not adversely affect the potency or efficacy of the formula; however, do not allow RxD3 to freeze.
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Does this get refrigerated??
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According to the manufacturer’s product label, Rx D3 and Rx D3 Forte should be stored at room temperature out of direct sunlight.
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I understand there are 500 IU per drop but how many drops are in a mL??
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According to the product label, Rx D3 Forte contains 15,000 IU of Vitamin D3 per 1 ml and 500 IU per drop. Using the included dropper that is provided from the manufacturer, 1 ml would contain 30 drops.
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Displaying Questions 1 - 10