Finish Line MSM Joint Support Powder Horse Supplement, 30-lb tub

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$175.83 Autoship Price
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$185.08 Chewy Price
($0.39 /serving)
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$244.67 List Price
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No interest if paid in full in 6 months. .

About This Item

Details

  • MSM is thought to support a healthy inflammatory response and joint health in the horse.
  • Ultra-pure formula is a 99.99 percent source of bioavailable sulfur for maximum absorption and effectiveness.
  • No fillers, artificial colors or flavors.
  • Unflavored powder makes it easy to top dress grain.
  • Available in multiple sizes for ordering convenience.

Ingredient Information

Feeding Instructions

Frequently bought together

Questions & Answers

13 Customer Questions

how many servings for a 1000 lbs horse? approximately how long does it last an average horse.

Answer by Chewy • May 31, 2022
There are 5 different tub sizes. Per the label instructions, 1/2 to 1 ounce daily for a 1000 pound horse: 1 lb 32/16 days, 2 pounds, 64/32 days, 4 pounds, 128/64 days, 10 pounds, 320/160 days and 30 pounds, 96/48 days for 10 horses. MSM is a bioavailable source of sulphur so it helps with many functions in the mammalian system but joint support is the primary reason people choose MSM as a supplement. In higher doses MSM acts as an anti-inflammatory ingredient, sometimes people are looking to reduce inflammation and discomfort. We recommend the higher dose for this application. It is difficult to overfeed MSM, the toxicity level is approximately equal to water.

Is this MSM synthetically produced? Or is this MSM organic sulfur and its crystal, lignin (wood pulp-based) form?

Answer by Chewy • May 09, 2021
The MSM in this supplement is an ultra pure 99.9% source of bio-available sulfur. It contains no fillers, no artificial colors, and no flavors.

What is the mg of msm in this product?

Answer by Chewy • Mar 14, 2022
This supplement contains 28.375 milligrams in an ounce and the scoop included in our MSM is a half ounce. That means 14,1875 milligrams of MSM product. This supplement is 99.9% pure so there are 14,173 milligrams of pure, elemental MSM per scoop.

There seems to be a lot of variance in how much MSM is in the product. What size is your scoop, and what is the amount of MSM in that scoop.

Answer by Chewy • Mar 16, 2021
This scoop measures 0.5 ounces and contains 28.35 grams per scoop.
Reviews
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4.6
Rated 4.6 out of 5 stars
83 Ratings
Terms & Conditions

23 Customer Reviews

Rated 5 out of 5 stars
By Christine on Dec 10, 2025

Finish Line MSM

99.9 percent pure MSM. Good value. Received quickly.

99.9 percent pure MSM. Good value. Received quickly.

Rated 5 out of 5 stars
By Mary on Jan 7, 2026

Keep all my horses on this.

I call it my proactive joint juice.

I call it my proactive joint juice.

Rated 5 out of 5 stars
By Whimsy on Jul 16, 2025

Glad you carry the 30 pound size.

I have a herd of horses, and this is a foundation joint supplement in lots of other preparations.

I have a herd of horses, and this is a foundation joint supplement in lots of other preparations.

Rated 5 out of 5 stars
By Roberta on Mar 22, 2025

Works great

I've gotten better results with this product than Optwize. I'm very happy it's also a lot cheaper

I've gotten better results with this product than Optwize. I'm very happy it's also a lot cheaper

Rated 5 out of 5 stars
By Linda on Sep 15, 2024

Used this for years....best MSM out there.

I have used Finish Line horse products for years and this is just part of my line up for my 21 year old gelding who was diagnosed two years ago with DSLD....keeps

I have used Finish Line horse products for years and this is just part of my line up for my 21 year old gelding who was diagnosed two years ago with DSLD....keeps him comfortable am free moving and even though he is no longer used for any riding....I want to keep him around as long as possible and Finish Line MSM is helping me do that.

Rated 5 out of 5 stars
By Judith on Sep 9, 2024

Really works!

I give this to my pony everyday for stiffness. It really makes a difference. He also has summer respiratory problems , and I read this could help with inflammation,

I give this to my pony everyday for stiffness. It really makes a difference. He also has summer respiratory problems , and I read this could help with inflammation, as well. Definitely works for stiff joints, jury is out on respiratory but it doesn’t hurt to try. Chewy’s price is comparable to other sites, less if they’re having a good sale.

Rated 5 out of 5 stars
By Tammy on Feb 4, 2025

Works well

I have noticed a difference since using this product

I have noticed a difference since using this product

Rated 1 out of 5 stars
By bitty on Jul 27, 2024

Huge waste

This product was a huge waste of money. It is so bitter. I can’t subject horse to this. I put a smidge on my finger (I sample before giving to my horse) and it’s

This product was a huge waste of money. It is so bitter. I can’t subject horse to this. I put a smidge on my finger (I sample before giving to my horse) and it’s dreadful. I put it on her feed twice. No. Just no. She gets all foamy and frothy just to eat it.

Rated 4 out of 5 stars
By Will on Jul 26, 2024

MSM

I don't give it a five because it is a little chunky and should be all powder. I can't say exactly how it works because it's a subtle product and I may never know

I don't give it a five because it is a little chunky and should be all powder. I can't say exactly how it works because it's a subtle product and I may never know how it works. The price is a little too high for what it is compared to other sources. But overall it's a decent product

Rated 4 out of 5 stars
By Andrew on May 24, 2024

Magic dust?

We started giving MSM to several horses in the barn - 2g at a time, varying between twice and 5 times per day. Most ( though not all) were clearly moving more comfortably

We started giving MSM to several horses in the barn - 2g at a time, varying between twice and 5 times per day. Most ( though not all) were clearly moving more comfortably after a few days suggesting that it might be helping them. (We haven’t confirmed this by stopping using MSM. And likely won’t.)