DR. MERCOLA SpiruGreen Superfood Tablets Dog & Cat Supplement, 180 count - Chewy.com

Dr. Mercola SpiruGreen Superfood Tablets Dog & Cat Supplement, 180 count

By Dr. Mercola
Rated 4.5161 out of 5 stars

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$24.99Chewy Price
$23.74Autoship Price
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About This Item


  • Supports wellness, mobility and immune system health in cats and dogs with antioxidant rich algae.
  • With organic, vegetarian-grade spirulina and microalgae that are high in astaxanthin, enzymes and antioxidants.
  • Astaxanthin supports a healthy immune and cardiovascular system, plus healthy eyes and joints.
  • Spirulina is high in carotenoids that fight free radicals and help support skin and coat health.
  • Formula is perfect for cats and dogs and is made with no fertilizers, pesticides, toxins, iron, wheat, gluten, corn, or soy.

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Nutritional Information

Feeding Instructions


Questions & Answers

9 Customer Questions

Organic ingredients ?
Answer by ChewyNov 26, 2020
This supplement contains organic spirulina, microalgae and silicon dioxide. For a list of ingredients please click the "Nutritional Info" tab next to the "Description" tab.

How large are these tablets?
Answer by ChewyApr 30, 2019
These tablets 1.5 centimeters, close to the size of a chickpea. The tablets are chewable and may be broken apart, as needed.

Can y’all post a picture of the nutrition facts? Like IU or mg of nutrient per tablet?
Answer by ChewyOct 13, 2021
Please see the image below for the product facts for this supplement.

What are the nutrition facts for one serving?
Answer by ChewyJan 25, 2020
For the complete product facts per serving, please refer to the photo below:

ReviewsWrite a Review

Rated 4.5161 out of 5 stars
31 Reviews
Would recommend to a friend

31 Customer Reviews

Filter by reviews that mention

Rated 2 out of 5 stars
By Nicci on Nov 28, 2022

Too hard for cats

None of my 4 cats would eat these. They have had powdered spirulina and always liked that. These tablets were big. Too big for my cats to eat and really hard to break into smaller pieces. Probably a good product, just not practical for cats.

Rated 5 out of 5 stars
By CATMOMMY on May 31, 2022


Spirulina has Powerful Antioxidant and Anti-Inflammatory Properties. Humans are able to get this supplement so why not cats? My kitty hates them & spits them out if not delivered into the mouth properly, but I put one in her mouth on the side--careful never to choke her. I lift her head up until I see a real swallow. Done! Then I release her--now you can eat your tasty dinner! We are very fortunate indeed to be able to have this valuable supplement for cats. Some dogs eat them willingly--cats perhaps not, but worth the effort to put them safely in their mouth & allow them to swallow before they get their tasty supper! Be smart & purchase this & use your smarts to having them swallow this in a safe manner. It's good for them.

Rated 5 out of 5 stars
By harness on May 8, 2022


The one and only supplement I recently ordered that my GSD puppy Tessa is willing to take . She's on a raw diet and very picky but I shake bottle and she lays there in anticipation of getting this chewable.

Rated 5 out of 5 stars
By 2Shepherds on Jul 13, 2021

Our Shepherd LOVES these tablets!

Very happy to say that our girl loves her spirugreen tablets! She gets 3 a day for her size, and crunches them up as soon as I give them to her. I was afraid she'd just swallow them, but she chews them with no problem. Will definitely continue to purchase since it's a great supplement, and is offered at such a reasonable cost. I haven't attempted to give to any of our cats, so can't say how that would go over! Will definitely continue to purchase.

Rated 1 out of 5 stars
By Mike on May 5, 2021

Cats will not eat

We have 2 cats that will eat almost anything. They will not touch these. We tried whole, sniffed, put in mouth, spit back out. Our cats gobble soft food, I crumbled the pill into the food and the cats walked away. I have a complete bottle -4 pills that sits in the cabinet. I do not know if these pills are beneficial or anything since the cats will not eat. If a cat will eat them, it might be good for them.

Rated 5 out of 5 stars
By pauline on Apr 7, 2021

daily serving of superfood

This is perfect and easy for my two poodle terrier furkids. I just give each the right serving and they just chew and swallow. They love veggies to begin with especially the dark green leafy ones Italian/Lacinato kale and spinach.. so once they taste the “green” in this supplement, they need no further coaxing to chew & swallow the tablets.

Rated 5 out of 5 stars
By Popcorn on Jul 11, 2020

Good for post-vaccination detoxing

A friend in England suggested that I give my dog spirulina to flush the heavy metals from the vaccinations out of her system (my dog gets grey eye discharge for a few days after each jab). Until I found this I was giving her straight up spirulina powder but it was difficult to dose as a lot would stay on the bottom of her dog dish. These are a great way to ensure a consistent does but contrary to other reviews that say they don't need to disguise this with food or treats, my dog will not eat it on its own.

Rated 5 out of 5 stars
By KCtaos on Sep 6, 2020

Guess I am lucky...

My treat driven 13 yo cat eats one per day, no problem, but now this is out of stock!

Rated 5 out of 5 stars
By Chibby on Jan 24, 2020

Awesome product

Love love Mercola supplements! Thank you Dr. Karen Becker for your educational videos and publications! Thank you Chewy for your great products, fast shipping and great customer service!

Rated 5 out of 5 stars
By Marci on Nov 13, 2019

Super supplement!

I've used SpiruGreen off and on for several years for my cats and my dogs. All of my pets have loved the taste. The tablets can be easily broken into halves or thirds for cats. SpiruGreen has seemed to give my pets a beneficial boost when their immune systems needed it (runny noses, sneezing, dry skin, etc.). Highly recommended!