Keystone™ Canine Nutritional Supplement

Improves Eyesight, Itching, Joints, Digestion, and Well-Being For Healthy, Happy Pups!

Keystone™ is an all-natural canine supplement that contains a balanced blend of easily absorbed chelated vitamins, minerals, enzymes, and amino acids needed for a complete diet… This dog vitamin mineral helps the eyes, skin, coat, itch relief, joints, digestion, immune, & nervous systems so your pup can Feel Great and Live a Happy Healthy Life!

High processing temperatures cook enzymes and important nutrients out of kibble before dogs have a chance to benefit from them. Keystone replaces all missing nutrients and helps provide the most nutritious meal for your pup every time... We hope you give it a try.

  • Sprinkle on any dog food or add water to make a delicious gravy top-dress. Contains a 30-day supply at 1 scoop per day.

  • Manufacturing premium animal supplements since 1933. Full Money Back Guarantee... This stuff works! 

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Overall rating: 4.7936506 / 5 from 126 reviews.

AI Generated Review Summary

Keystone™ Canine Nutritional Supplement is praised for its bioavailable nutrients, enhancing dogs' health and happiness. Customers highlight its effectiveness, taste, and the noticeable difference it makes in their pets' well-being.

Summary topics

  • Nutritional Supplement: 13%
  • Health Improvement: 7%
  • Dog Food Taste: 10%

Review topics: ["size","look","feel","smell","results","water","problem","work","coat","dog","supplement","taste","food","difference","nutrients","eyes","growth","benefit","change","dose","mix"].

Review highlights

  • "Excellent product, I have been able to take my dog successfully off Apolquel."Kathy A.
  • "These two products together have made a big difference."Trudy M.
  • "Recommended dose is 3 scoops a day, but I gave him 1 scoop a day for 2 months and see a huge difference!"Delia F.

Reviews

Posititive Results

"My Chesapeake Bay Retriever really likes Keystone Dog Vitamin Mineral Supplement mixed into his kibble with water. He literally licks the bowl clean. I have noticed his coat is much fuller, he moves better, and he has even more energy than before using this supplement. I clearly believe Chief benefits from this supplement, and highly recommend trying it."

Jim (5/5)

Life-changing for foster pups

"I volunteer with Central California Lab Rescue and have fostered over a dozen dogs. I recently started using Keystone for dogs who come into my home because they often arrive malnourished or sick and have terrible coats. Within just a few weeks, the dogs I have given it to have shown remarkable results. I now send the dogs to their forever homes with a bag of Keystone, knowing they will continue to improve with it. New owners love how beautiful their coats are. Thank you for this wonderful product!🙏"

Pam M. (5/5)

Great supplement

"My GSD is over 10 years, and he is on a raw diet, but something was missing. This has made a difference in his energy and he stopped snacking on anything he could find on walks!"

Elizabeth H. (5/5)

Keystone canine nutrition

"My dogs love it. But right now I can’t tell if powder is working cause before I started my dogs had gotten allergies shot. But other than that they love it."

Dennisse R. (5/5)

I have been giving Keystone

"I have been giving Keystone Canine Nutritional mix to my 3 dogs and the grand-dogs for a couple months now. I have been making their food for about 6 years. This has been the perfect additive for balancing out the home made food with vitamins, minerals and beneficial bacteria. I have used a couple other vitamin/mineral additives in the past. Keystone Canine has become the best choice and I am sticking with it! The dogs love it and are full of energy. Their eyes and coats shine. All my dogs are rescues - good food and nutrition makes all the difference to get them healthy and happy."

Heidi G. (5/5)

Skin allergies

"This powder has been by far the best treatment for my dogs, skin allergies! It took about a month for me to start seeing results, but since then he’s had absolutely no breakouts. It’s been amazing. I highly recommend this product."

Pam S. (5/5)

Great supplement for our dogs

"I mix this with salmon and add to my home made dog food (chicken, rice, peas carrots sweet potatoes and bone broth). My dogs digestive issues have stopped and their coats are doing great!"

Mike C. (5/5)

Keystone

"Fantastic. . I have already recommended to several people. . itching is way less this winter"

Keith P. (5/5)

Fantastic supplement

"My dog is on her 2nd bag. Her coat is very shiny, the itches are gone, rare head shaking and she loves the taste . Doing wonders on her!"

Yael L. (5/5)

Nutritious Dog Supplement My Dog Loves.

"This supplement smells good to me and my dog cleans up every last bit each morning. I put it on top of his food and then add a little water and stir it up. I purchased more for him as we finished the first bag."

Lyn M. (5/5)

Q&A

Dr. JimZ: My 4-year-old rough collie, Andy, and my 7-year-old cairn terrier, Ellie, have eaten Zamzow's Dynamite for dogs kibble for a year or two. It completely stopped the occasional regurgitating my little one experienced after eating. I'm thinking of adding this nutrient mainly to soothe my collie's nerves. Andy is 70 lbs. and Ellie is 10 lbs. What is the least amount that you think I could get away with giving them, daily, to stretch it out?
It is ok to start with as little as you like and gradually increase as you see fit. Your dog will benefit from these nutrients at any level :) Cheers!
Are these vitamins ok to give a pregnant dog?
Absolutely! Keystone is great for pregnant and nursing canines, puppies and older dogs as well. This is the most perfect vitamin mineral supplement available. The formula has been fine tuned over the last 40 years :) We hope you give it a try!
What is the other product you use for dogs? I read where someone fed Keystone in the morning and something else for the night feeding.
I believe that customer had also fed their pups the Dyna-Gold Mineral. It is an organic source of chelated trace minerals that is very well balanced and pure. Hope this helps!
My dog can't get over itchy ears--- we've had him on several rounds of meds from the vet. Does this product help with itchy dog ears? Thanks in advance-
Keystone has been known to improve many dog problems, itchy ears being one of them. I would certainly give it a try. When your pup gets the right balance of nutrients and minerals many of these problems go away.
Good evening! I'm interested in purchasing the Vitamins for my Bichon Frise. However I would like to know how long I should be giving my dog the Vitamins, even though I cook his food, and if it comes with a scoop?
We suggest serving this daily supplement and to continue using for continued results. This dog vitamin powder comes with a 1 oz scoop. We hope you give it a try!

Frequently Asked Questions

What makes Keystone™ different from other dog vitamin powders?

Most dog vitamins on the market use synthetic fillers and low-grade ingredients that look good on a label but don't absorb well. Keystone™ is made with chelated vitamins, minerals, enzymes, and amino acids that are easily absorbed and bioavailable. There are no fillers, no shortcuts, and no cheap substitutes. Dr. JimZ has been manufacturing premium animal supplements since 1933, and Keystone™ reflects that level of care.

What areas of my dog's health does Keystone™ support?

Keystone™ is a complete mineral supplement that supports multiple areas of your dog's health. The formula targets joint health, coat health, digestive health, immune support, eyesight, and nervous system function. It's designed to fill the nutritional gaps left behind by commercial kibble, which loses essential vitamins and enzymes during high-temperature processing. When those missing nutrients are replaced, most owners notice improvements in their dog's energy, mobility, and overall well-being.

Is Keystone™ good for older dogs?

Yes, older dogs are often the ones who benefit from it the most. As dogs age, joint function declines, nutrient absorption slows down, and the immune system weakens. Keystone™ delivers the essential nutrients, amino acids, and trace elements that support connective tissue, gut health, and immune function in aging dogs. Many customers report that older dogs show noticeably more energy and less joint stiffness within a few weeks of starting the supplement.

How do I serve Keystone™, and will my dog actually eat it?

Most dogs love it. Sprinkle one scoop directly onto your dog's food, or add water to make a gravy-style top dressing. The formula includes dried peanut butter flavoring, so it mixes well with kibble, raw diet, or any other feeding approach. Each bag contains a 30-day supply at one scoop per day, or two scoops for larger dogs up to 60 lbs. You can also stretch the product and feed less according to your budget, because any amount of Keystone™ is better than none.

What vitamins and nutrients are in Keystone™?

The formula includes vitamin A, vitamin D, vitamin E, folic acid, biotin, and niacin. It also delivers a full range of B vitamins, including thiamine, riboflavin, pyridoxine hydrochloride, and vitamin B12. Beyond the vitamins, you'll find chelated minerals like iron, zinc, copper, manganese, magnesium, and cobalt, along with probiotics, digestive enzymes, chia seed, aloe vera, and yucca extract. It's the most complete dog vitamin powder on the market in terms of ingredient quality and range.

Can Keystone™ help with itching, dry skin, or seasonal allergies?

Many skin and coat issues in dogs stem from nutritional deficiencies in their diet. When essential fatty acids, trace elements, and key vitamins are missing, it shows up as itching, dull fur, or dry skin. Keystone™ addresses those deficiencies with ingredients that support a shiny coat and healthy skin. While it's not a medication for seasonal allergies, improving your dog's overall nutrition strengthens the immune system and gives the body a better foundation to handle environmental stressors.

How should I store Keystone™, and how long does it last?

Store Keystone™ in a cool, dry place with the bag sealed between uses. The powder supplements stay fresh when kept away from moisture and direct heat. Each bag contains approximately 30 scoops, so one bag lasts about a month for dogs under 20 lbs at the recommended serving size. For dogs on two scoops per day, you'll go through a bag in about two weeks. There's a full money back guarantee, so there's no risk in giving it a try.