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Tumil-K Tablets (Potassium Gluconate)

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$47.01 $32.99 
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100 ct
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$47.01 $32.99 
Ships in one business day or less

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100 ct
Price w/coupon SAVE20
You save $14

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Product Info

What is Tumil-K?

Tumil-K is a supplement for pets who are potassium deficient. Tumil-K requires a prescription from your veterinarian.


Cats and dogs


  • Helps restore your pet's potassium to a healthy level

How does Tumil-K work?

Potassium is important for normal muscle function in your pet.


Give Tumil-K with food. Keep plenty of drinking water available for your pet. Safe use in pregnant pets or pets intended for breeding has not been proven. If your pet's condition worsens or does not improve, stop product administration and consult your veterinarian. Do not administer to cats with acute oliguric, anuric, or very advanced renal failure. Do not administer when high potassium levels may be encountered, such as adrenal insufficiency, acute dehydration, or urethral obstruction. For use in cats and dogs only. Keep out of the reach of children.

Brand Name:

Tumil-K (Virbac)

Generic Name:

Potassium Gluconate

What is the most important thing I should know about Tumil-K?

Tumil-K is used as a supplement in potassium deficient states. Tumil-K may also be used for purposes other than those listed here. Tumil-K is a prescription medication FDA approved for veterinary use in dogs and cats. Tumil-K is available as 2 mEq (468 mg) scored tablets. The usual dose in dogs and cats is 1 tablet (2 mEq) per 10 lbs of body weight twice a day. The dosage may be adjusted based on your pet's response to treatment. Tumil-K should not be given to cats with acute or very advanced kidney failure.

What should I discuss with my veterinarian before giving Tumil-K to my pet?

Tell your veterinarian if your pet has kidney disease, urinary tract obstruction, or cardiac disease. Tell your veterinarian if your pet is pregnant or lactating. Also, tell your veterinarian about any medications your pet is currently being given.

How should Tumil-K be given?

Give this medication exactly as directed by your veterinarian. If you do not understand the directions ask your pharmacist or veterinarian to explain them to you. Tumil-K should be given with food. Make sure plenty of fresh, clean drinking water is always available to your pet when giving Tumil-K. Store Tumil-K at room temperature away from moisture and heat. Keep this medication away from children and pets.

What are the potential side effects of Tumil-K?

If any of the following serious side effects occur, stop giving Tumil-K and seek emergency veterinary medical attention: an allergic reaction (difficulty breathing; swelling of the lips, tongue or face; hives). Continue giving Tumil-K and talk to your veterinarian if your pet experiences muscular weakness, GI disturbances or cardiac disturbances. Other side effects may also occur. Talk to your veterinarian about any side effect that seems unusual or bothersome to your pet.

What happens if I miss giving a dose of Tumil-K?

Give the missed dose as soon as you remember during the same day. However, if you don't remember until the next day, skip the dose you missed and give only the next regularly scheduled dose. Do not give a double dose of this medication.

What happens if I overdose my pet on Tumil-K?

If an overdose of Tumil-K is suspected, consult your veterinarian or emergency veterinary clinic immediately.

What should I avoid while giving Tumil-K to my pet?

Tumil-K should not be given to cats with acute or very advanced kidney failure. Tumil-K should not be given to pets with other diseases where high potassium levels may be encountered, such as adrenal insufficiency, acute dehydration or urethral obstruction.

What other drugs will affect Tumil-K?

Tumil-K may react with Corticotropin, Difoxin, Penicillin, Diuretics, Rimadyl (and other NSAIDs), Glucocorticoids, Mineralocorticoids, Anticholinergics, and Benazapril (and other ACE inhibitors).

How to Use

Tumil-K Directions:

  • Tumil-K is a prescription medication used in dogs and cats as a supplement in potassium deficient states, particularly in pets being given digitalis.
  • Tumil-K should be given with food. Allow plenty of water for your pet to drink.

The dose of Tumil-K may be adjusted by your veterinarian based on the pet's response to treatment.

All weights
The usual dose in dogs and cats is 1 tablet per 10 pounds of pet's body weight twice a day. Give Tumil-K exactly as directed by your veterinarian.
Do not use!

Store Tumil-K at controlled room temperature 59°-86°F (15°-30°C).


Tumil-K Ingredients:

Tumil-K Tablets
Active Ingredients (per tablet)
Potassium Gluconate USP
2 mEq (468 mg)

Inactive Ingredients: Croscarmellose sodium, magnesium stearate.

Customer Reviews
Tumil-K Tablets (Potassium Gluconate) is rated 4.4 out of 5 by 5.
Rated 3 out of 5 by from Confused by Dispensing Spoon This product comes with a dispensing spoon labelled 1/4 tsp. When compared to measuring spoons in my kitchen, this spoon actually dispenses 1/8 tsp. I saw no improvement in my cat until I used the measuring spoon in my kitchen, (under the advice of my vet).
Date published: 2014-08-28
Rated 5 out of 5 by from Crush and put on top of wet food My vet recommended these supplements when my cat started to lose weight. They seem to have solved that problem completely. He has restored his appetite and back to his normal self. I crush them and put them on top of his wet food, and he eats them without hesitation. My vet also warned me that most cats hate the taste and refuse to eat it. However, my cat does not seem to have that problem with either this brand or a generic version I used at one point (PotassiTabs). In fact, I think he now prefers his (wet) food with the crushed supplement on top; when I just put out his food, he gives me an indignant look and waits for the powder to be added!
Date published: 2013-03-31
Rated 4 out of 5 by from about Tumil-k my 'about' 14 or 15 yr old kitty started having kidney problems. the vet put him on Tumil-k along with Rubenal 75. It has been at least 1 yr or more and his kidney values has been stablized. my vet told us tumil-k would help him feel better and it definitily has!
Date published: 2011-04-18
Rated 5 out of 5 by from Miraculous recovery We thought our 16-yr-old cat had a stroke... incredibly lethargic, unable to hold her head up, difficulty moving let alone walk or climb stairs. Blood work showed all good levels except for slightly lowered potassium. We were ready to have her put to sleep, and our vet agreed, but we gave her 24 hours and started her on Tumil-K. She showed improvements overnight, dramatic improvements in 3 days, and within 10 days back to her normal activities including playing and jumping. I'm so impressed with Tumil-K I think I'll keep some on hand in case I start feeling poorly! (I grind it up and mix it into her wet food)
Date published: 2011-01-13
Rated 5 out of 5 by from Great Product My 18 yr old cat has kidney problems and since taking this medication, she is keeping her numbers down (along with another medication) and is active as ever. Easy to mix in just about anything.
Date published: 2008-08-11
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When will tumil k be available?  I need the tablet form.

Asked by: Shari
I'm just now needing the refill this and found the local pharmacy is unable to get it for me.  Now I see it has been unavailable for 2 months?!!  What are people using as an alternative???
Answered by: coco
Date published: 2016-04-20

Is Tumil-K (468 mg) gnow available in powder form? My vet orders it this way.

Asked by: gmottice
We only carry Tumil-K in tablet form.
Answered by: Lisa M
Date published: 2015-04-07

Why prescription needed?

You can buy potassium in most any store. My vet prescribed these for our cat and charged $50. This was before I knew about 1800petmeds. I know a lot of supplements have added inert ingredients but I found a potassium citrate capsule without any and the price per cap is much lower than any prescription price I've found. The dosage for only slightly more. I know the dosage doesn't have to be exact as our vet also adds potassium to the IV fluids I give s.q. Twice a week. Question is do you see a problem giving the P.Citrate to my cat AND why are there no OTC potassium supplements for cats? I know that too much is dangerous but this is true of many vitamins and supplements.
Asked by: AnimalLover
Why is a prescription needed? Well, to protect your pet. Choosing the correct dose of potassium for a pet must be done very carefully. It isn't done based on body weight like other medications. Typically, labs must be done to find the serum potassium level in the blood. For this reason, it is required to get a prescription from a Vet who is qualified to evaluate the pet and determine the correct dose needed.
Answered by: Rich, Pharmacy Intern
Date published: 2013-10-22

Why would my vet recommend this to go along with steroids?

Asked by: Lindy
Steroids such as prednisone, prednisolone, dexamethasone, etc., can cause a drop in potassium levels in the body. It's possible based on the dose of the steroid, the condition being treated, and the length of treatment time, that your veterinarian is looking to prevent this drop in potassium levels by supplementing with Tumil K.
Answered by: Gary, Dir. of Pharmacy Services
Date published: 2013-10-22

How does it compare to Kanimox?

I have a young cat diagnosed with genetic potassium defiency. we are using Kanimox syrup at the moment, but am wondering if there are alternatives?
Asked by: sirocco
Kanimox contains 234 mg of potassium sorbate per ml. Tumil-K, a prescription medication, contains 468 mg of potassium gluconate per tablet. You can discuss using Tumil-K with your veterinarian if you feel the tablet would be more convenient to use.
Answered by: Gary, Dir. of Pharmacy Services
Date published: 2013-10-22

Can the potassium pills be crushed & mixed with canned food?

Asked by: Kriss
Yes, we that for every dose. A mortar and pestle works great.
Answered by: pno2nr
Date published: 2013-10-22

do you carry this in powder form?

Asked by: jeanine
According to our vet, it's only available in a pill (caplet) or in a tube of paste. Many dogs seem to like the taste of the paste, but our cat hated it. We switched to the pill form and we smash each pill, grind it up into a powder, and mix it into her wet food. Doesn't even know it's in there.
Answered by: pno2nr
Date published: 2013-10-22

How big is the pill?

Asked by: Eric
About the size of a Tylenol caplet, approx 1/2" long.
Answered by: pno2nr
Date published: 2013-10-22
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