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Fluid Action Powder
Finish Line — Item #11398
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Promotes healthy joints

  • Provides the building blocks of healthy joints
  • 5,000 mg of glucosamine, 2,000 mg of pure MSM, 1,000 mg of vitamin C & 190 mg of yucca
Fluid Action Powder now has 2,000 mg of pure MSM and 190 mg of yucca at the same great price! This formula still contains 5,000 mg of glucosamine and 1,000 mg of vitamin C. Fluid Action Powder is now better than ever for horses in training and older horses with joint issues, and provides great support for all horses.

View our Joint Supplement Comparison Chart 


  • Active Ingredients per ounce (powder formula)
  • Glucosamine HCl
    5000 mg
  • Ascorbic Acid
    1000 mg
  • MSM
    2000 mg
  • Yucca
    190 mg
  • Niacinamide
    110 mg
  • Active Ingredients per ounce (liquid formula)
  • Glucosamine HCl
    5000 mg
  • Ascorbic Acid
    1000 mg
  • MSM
    60 mg
  • Yucca
    29 mg
  • Ginko Biloba
    18 mg
Inactive Ingredients (powder): Corn gluten, Sodium Chloride, Vitamin B6, Vitamin B2, Glucose, Fructose, Vitamin B12, Magnesium phosphate, Calcium citrate, Turmeric powder, Bromelain, Calcium iodate, Aloe Vera powder, Silica gel, Sodium Benzoate.

Inactive Ingredients (liquid): Water, honey, glycerol, citric acid, aloe vera gel, riboflavin (Vitamin B2), pyridoxine hydrochloride (Vitamin B6), cyanocobalamin (Vitamin B12 supplement), sugar, sorbitol, superoxide dismutase, apple cider vinegar, magnesium phosphate, calcium citrate, apple flavor, sodium benzoate, potassium sorbate, boswellia serrata, xanthan gum, sodium saccharin, octacosanol, FD& C red 40 and 3.


Instructions for Use:
Powder: 1000 pound horses- Give one ounce daily.

Liquid: Feed 1 ounce (by weight) daily.

Clinical Research

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    The reviews provided on this website represent the experience of the individual posting the review. We do not adopt, edit, or endorse any of the submissions posted within the reviews section. Rather, the reviews are part of an online community of animal owners that desire to share their particular experience with other individuals. These reviews are not a substitute for discussing the health of your animal with a veterinarian.

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    Fluid Action Powder is rated 4.8 out of 5 by 19.
    Rated 5 out of 5 by from Good Quality We are using this for our senior horses with navicular and arthritis. We could see a real improvement in their comfort after a few days of using this product. They are more willing to canter and play in the pasture. There is also a noticeable improvement in their ability to lie down and get back up. Works well and is at a good price point. Plus our VERY picky eater gobbles this down without batting an eye.
    Date published: 2011-06-06
    Rated 4 out of 5 by from Decent option I have used this joint supplement for one our ponies on and off for about 5 years and I am fairly happy with it. She is older now and has advanced arthritis in her hocks/fetlocks and I can tell it is keeping her happy. She does a little jumping and trail riding, so I think this is a great fit. I wouldn't reccomend this for someone who is training of competing heavily - I don't think it gives enough support - but for a younger or for a lightly ridden horse it is a great fix.
    Date published: 2011-05-05
    Rated 5 out of 5 by from Fluid Action I have used fluid action for years on my slightly creaky draft cross. She has some hock issues and this is one of the only products that I could feel a difference in her movement with (subtle, but her canter quality was better). I love the liquid, within a week you could feel the difference and she ate it with no problem, of course she eats doxy like its candy so we're not much help there. Best of all I can afford it!
    Date published: 2011-01-05
    Rated 5 out of 5 by from Great Product for Great Price Dont think you have to spend $100 and $100 of dollars on joint supplements. This product is a great price and it works great too!
    Date published: 2010-06-01
    Rated 5 out of 5 by from Highly Recommend! I gave Fluid Action to my 8yr old lab that has trouble moving due to arthritis and Hip Dysplasia. After only 2 weeks on it she is a whole new dog. Moving more freely now. And running! I've never seen her run as much as she is now! Highly recommend for those with dogs that need a good joint supplement
    Date published: 2010-03-28
    Rated 5 out of 5 by from Used it for years I have a small Hunter jumper barn that is very busy. Between the show horses and the older school horses Fluid Action Joint Powder with or with out HA has been a barn staple for years. It has helped to keep my horses going sound and pain free for years. Great stuff it is everything the say it is.
    Date published: 2010-03-21
    Rated 5 out of 5 by from Can't Live Without it My friend has a 19-year-old rescue mare that she adopted 3 years ago. Since then, she has been rehabbed and is currently in dressage training, and just started showing localy this year. This product makes a world of difference! We originally put her on it because it is so economical, and in the rare occasions when we have forgotten to re-order in time, the mare was stiff and creaky. When she is on it, she acts and moves like a much, much younger horse.Because of the noticeable difference in the horse, and the great price, this mare will never be without this supplement!
    Date published: 2010-01-09
    Rated 4 out of 5 by from well worth the cost Currently used to help a older horse's joints, we see moderate improvement in range of motion with months of use. Very palatable for the horse. Easy to dispense.
    Date published: 2009-11-02
    Rated 5 out of 5 by from Love it I've used this product for years on my (now 32 year old) Morgan. He has problems associated with age, obviously. But the biggest difference is that ever since he's been on Fluid Action, you never hear all the cracking and clicking that his joints used to make, so I KNOW it's doing something!
    Date published: 2009-06-03
    Rated 4 out of 5 by from
    Date published: 2009-04-22
    Rated 5 out of 5 by from Great for my picky eater I've tried many different types of joint supplements for my finicky mare. Even the treats didn't fly with her. With the Fluid Action over her grain, she doesn't even hesitate. And a bonus feature of this fluid is that it doesn't freeze in the winter!
    Date published: 2009-02-10
    Rated 5 out of 5 by from Great for young horses I have a 3 year Arabian reiner and with the amount of riding that was put on to him, the vet recommended a joint supplement. This stuff has been great. My colt is doing great. Thank you.
    Date published: 2006-02-10
    Rated 5 out of 5 by from Fantastic In my barn, every horse is reaching their senior years (13 yrs +). All are still active, and this keeps them all free of stiffness and makes their movements more, well...fluid. I like the liquid more then the powder as even my pickiest horse, who will usually refuse to eat his meals with many other supplements, will happily eat the Fluid Action. I suggest it for every horse, every discipline, every age.
    Date published: 2005-10-29
    Rated 5 out of 5 by from I know my horses' joints are safe with Fluid Action! Finish Line products have been so helpful to my horse. I ride and train my horses in Eventing which is tough on our dear equines. I did a lot of study-up on this product and it is the best one we have tried. My horse feels great and has not been stiff or lame since I started using this product. I am so glad that Fluid Action has been a step ahead of all the rest!
    Date published: 2005-02-16
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