Rx Vitamins Phos-Bind Powder Kidney Supplement for Dogs, 200-g

By Rx Vitamins
Rated 4.4615 out of 5 stars
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$34.77Chewy Price
$42.00Chewy Price
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About This Item

  • Supports normal health and kidney function.
  • Kidney care for both dogs and cats.
  • Improves urinary incontinence.
  • Hypoallergenic powder for pets with sensitivities.
  • Approved by the National Animal Supplement Council (NASC).

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Top IngredientsActive Ingredients Per 1 scoop: Aluminum Hydroxide (USP) 500mgActive Ingredients: Calcium Carbonate, Chitosan.Potassium Gluconate.Astragalus Root Extract, N-Acetylcysteine, Rehmannia glutinosa Extract...Potassium Gluconate
Breed SizeAll Breeds, Extra Small & Toy Breeds, Small Breeds...Small Breeds, Medium Breeds, Large BreedsSmall Breeds, Medium Breeds, Large Breeds...All Breeds, Extra Small & Toy Breeds, Small Breeds...Small Breeds, Medium Breeds, Large Breeds
LifestageAdult, SeniorAdultAdult, SeniorAdult, SeniorAdult
Health FeatureKidney CareKidney CareKidney Care, Vitamins & MineralsKidney CareKidney Care
Food FlavorN/AN/AN/AN/AChicken
Special DietN/AN/AN/AN/AN/A

Questions & Answers

22 Customer Questions

What are the ingredients?
Answer by ChewyApr 17, 2019
The only ingredient in this supplement is Aluminum Hydroxide (USP) 500mg.

My cat takes 250mg twice daily.I see the ingredient here is 500mg.Is the scoop measured to give 250mg? I am assuming one scoop equals 500mg?thanks
Answer by ChewyMar 25, 2021
The 200 gram container has a scoop size of 2.5 cc (½ tsp) and measures 500 mg/scoop.

Sometimes I put this in my dog’s food but then she decides that she doesn’t want to eat. I refrigerate it to give it to her later. She doesn’t like cold food so I need to heat it. Is it safe to put in the microwave-would the microwave decrease it’s effectiveness and would it harm the microwave?
Answer by ChewyJan 10, 2021
It is not safe to reheat the PhosBind material. Exposing the material (aluminum hydroxide) to the heat of a microwave will cause it to decompose. If your dog does not eat a complete meal, it is best to give the PhosBind dose just before a meal by mixing it in tepid water or a small amount of food. It's heavily not recommended to reheat the food with the PhosBind material in the food.

Does it come with a dosage spoon?
Answer by ChewyMay 22, 2019
This product does have a scoop included.

ReviewsWrite a Review

Rated 4.4615 out of 5 stars
39 Reviews
Would recommend to a friend

39 Customer Reviews

Rated 5 out of 5 stars
By DogMom68235 on Jun 28, 2022

Works wonders

My elderly dog was loosing weight fast and refusing food. We tried lots and lots of different dog and people foods but nothing was working. His phosphorus was very high. My Vet recommended this, within days he was eating almost full meals, and Wow 2 weeks later he is begging for food and has more energy. Especially when starting out give them the full binder in just 2 bites of food. That way if they won’t eat more you know they got the binder. Within 3 days we were seeing a big change in his appetite. Ask your vet how much to give your pet as weight, age, etc makes a difference.

Rated 1 out of 5 stars
By Dogmomof4 on Feb 9, 2022

Ingredients are concerning

I only purchased this because they did not have what I normally use. I really am uncomfortable with the ingredient aluminum in this product. I was told the Dr. Harvey product was discontinued, but I really hope not. I won't use this product and will try to find something comparable to Dr. Harvey.

Rated 5 out of 5 stars
By misha on Feb 2, 2022

mishas food

This stuff appears to work very well. Misha's latest blood work shows his kidney function to be normal. We almost lost him a year ago to declining kidney function. Phos-bind coupled with IV fluid transfusions and a renal friendly diet have stabilized his kidney function.

Rated 5 out of 5 stars
By MissAnnaHere on Oct 10, 2021
Top 250 Contributor

Cat not throwing up as much

My vet recommended for my cat who is in early stages of kidney issues. It really is helping her to not throw up nearly as much. I have not had her labs rechecked yet, but I can say it is helping her to keep her food down. My instructions were to mix 1/4 teaspoon daily throughout meals (total of 1/4 tsp daily). But check with your vet for personalized instructions.

Rated 1 out of 5 stars
By jag9 on Dec 1, 2021

Doesn't work for my cat

I tried everything to get my cat to eat this. I mixed it in food. She eats around it and after a couple days refused to touch the food at all if this is in it.

Rated 5 out of 5 stars
By Maddie on Nov 28, 2021

Phos-Bind Powder

I cannot rate this product for its efficacy until my dog has repeat lab tests in 6 weeks. I had to unsubscribe; I was getting way too many emails from Chewy

Rated 5 out of 5 stars
By Lady5423 on Sep 10, 2021

Good Value

Vet recommended for our two senior dogs. Added to food and dogs eat their food just fine. Don’t even realize anything has been added. Don’t be afraid to try it and please, take advantage of scheduled reorder. Chewey is the greatest site ever. They have everything a pet owner needs and their service agents are the best in the business. Five stars to Chewey!

Rated 5 out of 5 stars
By Giggles on Sep 3, 2021

Nice find!

I am impressed by this product it does keep my dog's incontinence away during the day and night with stage 1-2 kidney deficiency ! Glad to have found this product no more spotting on the floors and rugs to clean up daily. Thanks Chewy!

Rated 5 out of 5 stars
By ElliesM0m on May 29, 2021

Ignore the bad reviews: Dog parents NEED to hear about this

My dog was diagnosed with kidney disease and hospitalized for 5 days. We thought we were going to lose her, but slowly she started getting better. We began administering fluids under her skin and keeping her on a Renal Support diet. My vet recommended Aluminum Hydroxide gel, but she warned me that dogs hate the taste, and she would need two big syringes per day. After doing some research, I found Phos-Bind, and I was a little hesitant due to the negative reviews about the change in texture, but excited about the idea of mixing something in her food instead of an unpleasant bitter syringe twice a day. A few reviews pointed to its sand-like consistency and raised concerns that it does not dissolve and mix in water, just remains 'sand' at the bottom of the glass. I showed it to my vet, and she approved it, in spite of it's texture. I have been adding it to her food twice a day- it seems to be tasteless, as she doesn't seem to notice it. After two weeks, I took her to the vet to have her blood tested. We were ECSTATIC to hear that her disease has regressed to stage 1. Her phosphorus levels are back in the normal range, along with her creatinine. While kidney disease can never be cured, this is the best possible outcome, and I am so thankful and overjoyed. I want more parents of dogs with kidney disease to know about this option! Please just consult with your vet for the proper dosage, as every pet is different, and too much can be harmful. If your pet has kidney disease, PLEASE try this product <3

Rated 5 out of 5 stars
By Chrissy on Jun 22, 2021


Chewy worked with us & our vet during the months our cat was sick. They were so helpful. Other family & friends use Chewy & recommended them to us. They showed concern over helping us care for our cat that we ultimately lost. Cannot recommend Chewy enough. Try them. You'll be glad you did.