Ark Naturals Gray Muzzle Brain's Best Friend Soft Chew Brain & Nervous System Supplement for Senior Dogs, 90 count

By Ark Naturals
Rated 4.4248 out of 5 stars
$15.99Chewy Price
$15.19Autoship Price
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Top IngredientsActive Ingredients (per Tablet): Organic MCT coconut oil…2.8 g, Choline (from organic peanut butter)…7.0 mg, Niacin (Vitamin B-3) (from organic peanut butter)…1.5 mg...Active Ingredients: Medium Chain Triglycerides (MCTs), Omega-3 Fatty Acid (Fish Oil, Flaxseed...Active Ingredients: Glucosamine HCl (Shellfish Source), Fish Oil (Omega-3), Turmeric (Curcuma Longa)...Active Ingredients: Enzyme Blend, Yucca Schidigera, Ginger...Dried Potato Product, Flaxseed, Glycerin...
Breed SizeSmall Breeds, Medium Breeds, Large BreedsSmall Breeds, Medium Breeds, Large BreedsExtra Small Breeds, Small Breeds, Medium Breeds...Extra Small Breeds, Small Breeds, Medium Breeds...Small Breeds, Medium Breeds, Large Breeds
Health FeatureBrain Health, Calming, Diabetic Support, High-Energy, Senior CareBrain HealthHip & Joint SupportDigestive HealthImmune Support, Itch & Redness Remedy, Sensitive Skin...
LifestagePuppy, Adult, SeniorAdult, SeniorSeniorPuppy, Adult, SeniorAdult
Food FlavorUnflavoredPoultry, ChickenSeafood & FishUnflavored
Special DietGluten Free, Grain-Free, Human-Grade...No Corn No Wheat No SoyNo Corn No Wheat No Soy, Rawhide-Free
Food FormSupplementSupplementSupplementSupplementSupplement

About This Item


  • Cognitive support for disorientation, recognition, memory and learned behaviors.
  • Helps combat the side effects of aging in senior dogs.
  • All-natural ingredients, chews are su-paw tasty.
  • Free of corn, wheat, soy, byproducts and artificial colors, flavors or preservatives.
  • Safe for dogs 5 years and older.

See More

Nutritional Information

Feeding Instructions


Questions & Answers

4 Customer Questions

I’m considering purchasing this brand of supplement. Want to clarify something. Does one treat (for 11 lb dog) have 320 mg of ginkgo biloba?
Answer by ChewyMay 06, 2019
The ingredients list is per 4 chews so there is 320 milligrams of ginkgo biloba in 4 chews.

Are these soft treats? My senior dog only has 10 teeth...
Answer by ChewyMay 06, 2021
This treat is a soft chew.

How many of these chews come in a bag?
Answer by ChewyJul 28, 2021
Each bag will include 90 treats.

Can you feed your dog 2-3 treats for joint health and 2 or 3 for memory health in one day . 25 lb mini golden doodle- 14 yrs . We just discovered regular joint health chicken treats - she loves them . Should we just use Sr treats
Answer by ChewyAug 21, 2021
We encourage speaking with your Veterinarian before combining supplements, for the safest opinion.

ReviewsWrite a Review

Rated 4.4248 out of 5 stars
113 Ratings
Would recommend to a friend

113 Customer Reviews

Rated 5 out of 5 stars
By Dawn on Aug 10, 2023

A Saving Grace!

Didn't think these would do anything because nothing seems to work on my pup but I was desperate and at my witts end with the sundowners and cognitive decline of my 14 year old boy. They have made a significant improvement in his behaviors I can't believe it. He's 55lbs and I give 2 in the morning and 2 in the evening two hours before the sundowners starts. He seems more comfortable overall, his tail is starting to wag again, he recognizes me more, less panting and pacing episodes (especially throughout the night), less compulsive licking of the carpet for minutes at a time, less anxious overall! So glad I tried them, poor boy finally has some relief (and so do I!)

Rated 5 out of 5 stars
By Wanda on Jul 9, 2023

Worked for my little darling

My dog would get manic at night(sundowners). She would try to climb tables, walls and anything else she could get to. When she wasn’t doing that she would pace and whine. We got very little sleep. CBD oil helped for a little while but not enough. When I found these I stared her on three a day(she’s 16 lb). They started working for her within a few days. Now we have our baby back. So thankful this worked! Delivery with Chewy is excellent

Rated 5 out of 5 stars
By Karen on Sep 13, 2023

Brain's Best Friend Chews

They are small and heart-shaped, which is good. Al enjoys them, 2 a day. He has good days and bad days, but these help. He is 15.

Rated 5 out of 5 stars
By MollysMum on Aug 21, 2023


This supplement seems to be working . . . I can notice a difference in some areas. I break it up and mix it in with her food at dinner. Pleased I found this.

Rated 5 out of 5 stars
By 1ShanninFromOklahoma on May 5, 2023

Product Works

This product works well for my 16 year old dachshund who is having signs of dementia about a yr ago (constant barking, looking around lost and even more aggressive) .. wish I would of known sooner but started her since Dec and now I can tell the difference.. it took about a month or a-little over to see any changes. I have to hide the chews in a pocket pill or other soft food since she will not eat just the chews but I’m happy it’s helping her.

Rated 3 out of 5 stars
By whereismymom on Jan 23, 2023

meh….not sure about these

I got these for our older boy, I honestly didn’t notice any difference at all. I will say that he enjoyed the taste of them - but I’ll skip ordering these again.

Rated 3 out of 5 stars
By LaneyVA on Nov 13, 2022

My dog won't take them

She tried them once and snubs her nose at them. Apparently, she didn't like them. She seems to know when treats have an ulterior motive.

Rated 5 out of 5 stars
By Mamamisty on Nov 29, 2022

Love this product

My senior dog loves these. Even tho he can't hardly chew, these bits are soft enough for him!

Rated 5 out of 5 stars
By DogMom on Feb 3, 2022

Brain Food

I actually think this might work if you start your pup on it sooner than later. Unfortunately, I fall into the latter category. I didn't find out about this supplement until Roofus was already showing strong signs of doggy dementia. But after only a month on Brain's Best Friend, I can see some cognitive improvement. I'm going to start my young seniors on it now before they start showing signs of decline.

Rated 2 out of 5 stars
By Trinity on Jan 20, 2022

Doggy Diarrhea!

I don’t know how well these worked because unfortunately it gave my 3 pound Chihuahua diarrhea, really bad after just one treat, tried it one more time with only half a treat just to be sure it was the treat and it was.