1-TDC Periodontal & Joint Health Dog & Cat Supplement

By 1-TDC
Rated 4.7273 out of 5 stars


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$59.68Chewy Price
$65.00Chewy Price
$56.70Autoship Price
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About This Item


  • Helps support oral health.
  • Encourages a healthy inflammatory response from nose to tail.
  • Helps promote improved joint health and mobility.
  • Comes in an easy-to-feed soft gels.
  • Paw-fect for feline friends and canine companions.

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Nutritional Information

Feeding Instructions

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Top IngredientsActive Ingredients: Proprietary Blend of 1-TetraDecanol Complex Fatty Acids, Inactive Ingredients: Carob, fish oil...Active Ingredients: Glucosamine HCI (Shellfish), Methylsulfonylmethane (MSM), Chondroitin Sulfate (Porcine)...Active Ingredients: Cetyl Myristoleate (CM8), Methylsulfonyl Methane (MSM), Glucosamine Sulfate Potassium...Active Ingredients (Per Soft Chew): Glucosamine HCl 450 mg, Methylsulfonylmethane(MSM) 400 mg, Creatine...Glucosamine Sulfate, Methylsulfonylmethane, Chondroitin Sulfate...
Breed SizeSmall Breeds, Medium Breeds, Large BreedsExtra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...
Health FeatureHip & Joint Support, Skin & Coat HealthHip & Joint SupportHip & Joint Support, Vitamins & Minerals, RecoveryHip & Joint SupportHip & Joint Support
LifestageAdultAdult, SeniorAdultPuppy, Adult, SeniorAdult, Senior
Food FormSupplementSupplementSupplementSupplementSupplement
Food FlavorBeefUnflavoredOriginalUnflavored
Special DietGluten Free, Human-Grade, Non-GMO

Questions & Answers

5 Customer Questions

Where is this manufactured?
Answer by ChewyFeb 29, 2020
Dual Action Natural Support is made at a cGMP facility in the USA, using only human grade ingredients.

If my dog is 40lbs how many capsules do I give for the first 30 days?
Answer by ChewyJan 06, 2022
For a pet weighing up to 25 pounds, the dog would receive 1 capsule a day for 30 days (that is the loading dose) and then 1 capsule every other day thereafter. For a pet weighing over 25 pounds, the dog would receive 2 capsules a day for 30 days (that is the loading dose) and then 1 capsule per day thereafter.

Can this be given with Antinol?
Answer by ChewyAug 17, 2023
You can combine 1-TDC with Antinol. 1-TDC is a more effective fatty acid as it helps both oral and joint health due to it’s unique absorption properties. Our chief medical officer does recommend that you use half of the green-lip muscle when combining it with 1-TDC.

Can I put this on my dogs food to administer?
Answer by ChewyJul 28, 2023
This supplement should be applied to nose/paws of cats to lick off or fed directly as a treat.

ReviewsWrite a Review

Rated 4.7273 out of 5 stars
22 Ratings
Would recommend to a friend

20 Customer Reviews

Rated 5 out of 5 stars
By Carol on Nov 18, 2023

Great for feline and canine gingivitis!

My kitten was diagnosed with juvenile gingivitis. With this diagnosis, there is no plaque but the gums are inflamed and can bleed. Tooth brushing is essential. And with the recommendation of a board-certified veterinary dentist, we followed our daily tooth-brushing regime with 1-TDC. After a few weeks, the inflammation is greatly reduced and our kittens gums no longer bleed with tooth brushing. We are still going to follow the recomnended protocol for juvenile gingivitis to include regular teeth cleaning at three/month intervals. But with the improvement that we have seen, we are hopeful that our kitten will be one of the lucky ones that outgrows juvenile gingivitis. Highly recommend.

Rated 5 out of 5 stars
By Jill on Nov 4, 2023


I purchased this amazing product for my 20 lb. Maine Coon mix cat. When I took him for his checkup this year I mentioned to the vet that Clive, who is 13 1/2 years old, was walking with a jerky gait and not jumping as much as he used to. She checked and agreed that he had some painful arthritis. She gave me a 10 piece sample of 1-TDC and said it should help with the arthritis and any inflammation he may have in his gums at his age. I wasn't expecting much, but within a few days I noticed a huge difference. He walks smoothly and obviously with much less or no pain. I bought a bottle before I even finished the sample.

Rated 5 out of 5 stars
By Simoa on Nov 17, 2023

My dog loves it

I read many reviews saying that their pets did not like the taste of this supplement but thankfully my dog loves it. I twist off the tab and squeeze the contents onto my finger and rub it into my dog’s gums. Then he eats the empty capsule. My vet recommended it and we are happy with this product.

Rated 5 out of 5 stars
By Johanna on Sep 7, 2023

Fantastic product for dental health

I use this product daily for my two large dogs. It keeps their gums healthy and teeth looking great. One of my dogs had a dental cleaning recently and the veterinarian commented that is teeth were in great shape! The capsules are a little hard to open but other than that, it works phenomenal.

Rated 5 out of 5 stars
By Sharon on Sep 28, 2023


Love this product. Shelties have a real problem with their teeth and this really seems to help. Keeps them much cleaner and gums in better shape. AND I love Chewy!!

Rated 5 out of 5 stars
By missy on Apr 7, 2023

it works well

this has worked wonders for both my young and senior small dogs. neither care for the taste, but I think that's a good thing because then they let it kind of soak in to their gums. I use it after brushing their teeth which i try to do twice a week at a minimum.

Rated 4 out of 5 stars
By Alana3Cats on Apr 2, 2022

Tastes bad but works?

I wonder if this is the same thing that used to be called EFAC made by Hope Science Vet. Anyway my cats hate the taste of this stuff so I have to hide it in Fortiflora, but I think it is helping one of my cats with her arthritis and the other with her IBD so it's totally worth some extra effort.

Rated 5 out of 5 stars
By JL on Feb 14, 2022

Next door neighbor

My next door neighbor doesn't have a computer and was in need of this medicine for one of her cats, so I offered to find it for her when she runs out. Her cat must like it and must be doing well as I have ordered it before for her. My cats are also taking the pills and they are also doing well.

Rated 5 out of 5 stars
By MissRuby on Feb 16, 2022

Sparkling teeth

Keeps my seven year old min pin/Terrier Miss Ruby teeth free of tarter And she loves slurping it. So I’m sure it’s also helping her joints. Hard to really tell with a terrier she has so much and energy!

Rated 5 out of 5 stars
By CatManChris on Feb 8, 2022

PAWSOME stuff!

We give this to our cats, it's a great product and you can really tell the difference it makes, some of the cats eat it like a treat too!