Equine Mega Sweat

O3 Animal Health
5 Reviews
$ 114.95

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Special Note: O3 Animal Health alerted us to a misprint on their current labeling that showed an incorrect expiration date of 2/22. This product is not expired. We will correct the date as soon as the manufacturer sends updated labels.

Equine Mega Sweat from O3 Animal Health is a specially formulated blend that may help with anhidrosis, a disease that prevents sweating in some horses. Utilizing Equine Mega Sweat, there is a 90% success rate for horses to start sweating within 24-48 hours.

Need a Pump? You can purchase one HERE!


Anhidrosis is most commonly found where temperatures and humidity are high. While the mechanism is known, it is unknown why some horses are more susceptible to developing the condition. Horses with Anhidrosis are slow to recover after exercise. 
Symptoms may include: panting heavily, very little or no sweat, elevated pulse and a higher than normal body temperature, a flaky coat and/or coat loss and distressed or lethargic behavior after exercise or even after work has ceased. It is imperative that owners pay close attention and notice signs of Anhidrosis, as it can be a dangerous health condition. 


Picky eater? While 99.9% of horses LOVE the taste, but for those that don't, we have a quick and easy fix. Crush up 10 peppermints and add to your gallon of product. Shake, Shake, Shake, and serve!


Directions for use: Top-dress Equine Mega Sweat over a low-fat, complete grain and supply your horse with healthy fat that may help trigger sweating in your Anhidrotic horse.

1 Pump = 1 Ounces

Loading Dose: 4 pumps twice daily for 2-4 weeks
Maintenance Dose: After the horse begins to sweat (usually 24-48 hours) continue to use remainder of the product. You may then switch to our original Equine Omega Complete product to maintain sweating and overall health


Premium Non-GMO Soy Oil, 12,000 IU Natural Vitamin E per daily dose, human grade deep water wild caught fish oil, all essential amino acids, other natural ingredients. Contains a scientific balance of all three chains of Omega 3’s (EPA, DHA and ALA), Omega 6 and Omega 9, unsaturated fats, vitamin E and other nutrients

Ratings & Reviews

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It works!!!


My horse stopped sweating a couple weeks ago, and after a week of trying 'True Sweat' and a beer a day with no improvement, I read about this product online and decided to give it a try. On their website it says usually you'll see results within 24-48 hours, but I decided to give him 4 days to get in his system. Today was our first ride since starting and he was covered in sweat! Even lathered between his butt checks. Hallelujah!! I was skeptical at first but hopeful, and I'm a believer now!! Well worth the money!! I'm relieved I don't have to cancel any horse shows coming up and can continue training!!



This product worked pretty instantly. My horse got to loving it on day two. Works great!! Sad it’s so pricey, would love to use it as a maintenance supplement.

Life Saving Product


Wish I could leave this 10 stars. This product is worth its weight in gold. If you have a horse that stopped sweating, stop hesitating and buy this NOW.
<br> My gelding had an acute episode of anhidrosis during a Texas heat advisory, displaying life threatening symptoms. After feeding Mega Sweat for 2 days, he was back to producing sweat and his body temperature returned to safe levels.
<br>Every person/farm caring for horses in warm climate areas needs to keep this stocked at all times!

Absolute best anhidrosis treatment ever blows the others away


9 yr old TB gelding quit sweating in the 95 temps in Florida and high humidity. Saw your product online, arrived in 3 days started him on it that day and within 24 hrs started to sweat, returned to trail riding and training 48hrs

Back to Riding and Showing!


My 12 year old, 18 hand warmblood is not a great sweater. But this summer he stopped sweating, even while on One AC and a Guiness extra stout every day. This condition made him barely rideable and fatigued, taking my competitive show horse out of the show ring - let alone regular work. I ordered this product and he began sweating within days. 2 weeks in and he is now lathering normally - even better than before! Highly recommend this product.