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SmartGain® Original

SmartSupplements by SmartPak — Item #14505
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Four methods of support

  • Provides extra calories from healthy fats & amino acids to support lean muscle development
  • Also includes prebiotics, probiotics & enzymes for digestive health
SmartGain is the weight gain solution you have been looking for, with four complementary methods of support! This comprehensive formula provides amino acids to support lean muscle development, extra calories from healthy fats, prebiotics, probiotics, and enzymes for digestive health, and the herb fenugreek to support a healthy appetite in picky eaters. Four weight gain strategies. One tasty supplement. 

View our Weight Supplement Comparison Chart


Guaranteed Analysis per 2 oz:
(Maintenance Dose = 1 scoop (2 oz) daily)
  • Crude Protein (Min)
  • Lysine
    1,250 mg
  • Methionine
    800 mg
  • Threonine
    1,000 mg
  • Crude Fat (Min)
  • Crude Fiber (Max)
  • Active Dry Yeast (Saccharomyces cerevisiae)
    27.9 billion CFU
  • Alpha-amylase
    19,700 USP
  • Protease
    19,700 USP
  • Lipase
    4,700 USP
  • Pepsin
    7 mg
  • Lactase
    35 ALU
  • Bifidobacterium Longum
    89 million CFU
  • Enterococcus Faecium
    2.25 billion CFU
  • Enterococcus Lactis
    3.85 billion CFU
  • Lactobacillus Acidophilus
    9.45 billion CFU
Ingredients: : Flaxseed Meal, Soybean Meal, Heat Stabilized Rice Bran, Dried Milk Protein, Corn Distillers Dried Grains With Solubles, Vegetable Oil, Active Dry Yeast, Yeast Extract, Fructooligosaccharide, Dried Whey, L-Lysine Monohydrochloride, L-Threonine, DL-Methionine, Dried Aspergillus niger Fermentation Extract, Brewers Dried Yeast, Dried Porcine Pancreas, Fenugreek Seed, Natural & Artificial Flavors, Dried Lactobacillus acidophilus Fermentation Product, Magnesium Silicate, Maltodextrins, Dried Enterococcus faecium Fermentation Product, Dried Enterococcus lactis Fermentation Product, Salt, Dried Bacillus subtilis Fermentation Product, Dried Bifidobacterium longum Fermentation Product, Dried Propionibacterium freudenreichii Fermentation Product, Dried Porcine Stomach, Dried Aspergillus oryzae Fermentation Extract, Vitamin E Supplement, Citric Acid (preservative)


Instructions for Use:
Horse Weight Recommended Amount
Under 500 lbs. 0.5 scoops
500 – 1000 lbs. 1 scoop
1000 – 1500 lbs. 1 scoop
Over 1500 lbs. 1.5 scoops
Feeding Instructions: Feed 2 oz daily, 1 scoop = 2 oz.

Clinical Research

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    out of 5
    86% of customers would recommend this product to a friend!
    Tell us what you think!

    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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    SmartGain® Original is rated 4.5 out of 5 by 469.
    Rated 5 out of 5 by from Wow!! I started a severely malnourished gelding on this. ( He had been Rescued from bad situation) I know it is going to take time, but I can see some results. In 2 months, he has put on weight, coat looks better, but the he FEELS GOOD! He eats all his food with gusto and greets me at the gate with a whinny and nicker!!
    Date published: 2017-04-15
    Rated 5 out of 5 by from Really helped my mare I was worried about my mare going into the winter underweight. She was struggling with her weight due to recovering from illness. SmartGain gave her the boost she needed. Now she is looking great!
    Date published: 2017-03-07
    Rated 5 out of 5 by from Great Got a rescue horse that was severely under weight. Now she has been improving greatly.
    Date published: 2017-02-24
    Rated 5 out of 5 by from So far, so good! After about four weeks' use, my 15 year old warmblood gelding may be gaining weight; it's likely too soon to really tell. But he's certainly stopped losing weight. I worried about SmartGain being a powder, rather than easier-to-eat pellets. But SmartPak promises it's palatable, and suitable for picky eaters, so I tried it. Hooray! Since I added SmartGain, my horse eats all his grain/meds/supplements mixture readily, where before he ate slowly, often leaving some uneaten. SmartGain smells SO good - even I want to eat it. But the last thing I need is a weight supplement!!
    Date published: 2017-02-16
    Rated 4 out of 5 by from Ease of packaging While I didn't see any change in the horse I was providing the supplements to, I was comfortable with the knowledge I had of the product from the staff and the information provided on the website/magazine to give it to him and see if there was a change. I have a lot of faith in the products available and will definitely be purchasing again!
    Date published: 2017-02-04
    Rated 5 out of 5 by from Healthy weight I started using this on my OTTB who wouldn't fill out on her rib age and top line even with extra hay and beet pulp into her diet. After three weeks on this I have noticed she's filling out a lot more and has gotten heavier
    Date published: 2017-01-11
    Rated 5 out of 5 by from Saw results within a month. My 26 year old mare s muscle mass had an increase in definition.
    Date published: 2017-01-03
    Rated 4 out of 5 by from weight maintained so far this winter Have used for 1 month - 26 yr old thoroughbred. I mix the powder thoroughly with hot water, then mix thoroughly with a senior feed (he chokes without a lot of water mixed with feed and supplement.) It smells and tastes good - he now finishes all his feed, and eats more hay per feeding.
    Date published: 2017-01-02
    Rated 1 out of 5 by from Too much powder Unfortunately, my horse doesn't really care for the taste. I think it may just be too much powder. I plan to try another option next month.
    Date published: 2016-12-10
    Date published: 2016-12-02
    Rated 3 out of 5 by from My horse didn't like it My horse didn't like it so not sure if it worked! :(
    Date published: 2016-12-02
    Rated 5 out of 5 by from My boys are 26 and 28 and it has helped them maintain a good weight during the winter months. Both are hard keepers.....
    Date published: 2016-11-14
    Rated 3 out of 5 by from Made my OTTB have more energy I started my OTTB on this supplement. She is in a 6 day a week work schedule for eventing. Normally forward but not a hot headed ride. This supplement put the weight back on her quickly but made her unable to pay attention, caused loss of focus. Nothing else in her diet or schedule changed. Stopped the product and in 3 days she was back to her normal energy level.
    Date published: 2016-11-10
    Rated 5 out of 5 by from Wonderful product I started smartpaks in October and my horse has already gained a healthy amount of weight. I'm glad I can head into winter and not have to worry that my horse is too thin. I'm so happy with this product.
    Date published: 2016-11-10
    Rated 4 out of 5 by from Good Weight Builder I've had my 10yo ottb mare on this supplement for about 3 months and I think it's a great fat supplement. For about 7 months she was on high fat grain and beet pulp and she just wasn't filling out like she should have been. I put her on this and after a month noticed her filling out like I wanted her to. She is now on SmartGain with her grain and alfalfa hay with a bit of pasture and is looking very good. I also like how this fat supplement has the hindgut probiotics included as well. She has also stayed very calm, so no energy difference's. She eats the supplement now fine but originally did not like it and had to mix it in with beet pulp or a little water on the grain to get it to stick. It also smells super sugary like a Reece's Peanutbutter Cup.
    Date published: 2016-11-01
    Rated 3 out of 5 by from My Picky Eater Won't Eat I decided to put my 31 y/o QH gelding on this, as he has been losing topline and is a little on the thin side, so I thought it would be a good addition. While I am sure it works well, he is just too picky for this. I was hoping it would work well, as it says that it is picky eater approved, but unfortunately, he refuses, and eats around it. So I guess it depends how picky your horse is, but I would still recommend it to others.
    Date published: 2016-10-18
    Rated 5 out of 5 by from Love it She love this I will keep buying it really helps out my hard keeper
    Date published: 2016-10-14
    Rated 4 out of 5 by from Hard working, hard keepin' TB mare I love SmartGain! My mare was already getting the maximum amount of grain recommended for her heavy work and body weight, and was still having problems keeping a good weight. SmartGain finally has her looking her best! I only wish that it came in pellets, because she tends to shift the food around when she eats, and there's always about a half a pack of powder still left in the bucket that she doesn't eat. Sad to be wasting such a great product!
    Date published: 2016-09-25
    Rated 3 out of 5 by from I am just now on my first month with this product and already see results in my horse.
    Date published: 2016-09-24
    Rated 2 out of 5 by from Does nothing Gives my gelding diarrhea and that's about all it does.
    Date published: 2016-09-19
    Rated 5 out of 5 by from Smells like a vanilla milkshake I have an older horse who was losing weight this summer with the heat tried this to help him build back some muscle and doubled his electrolytes and he is doing much better
    Date published: 2016-09-13
    Rated 3 out of 5 by from Horse doesn't like It seems to have worked but I wish it was in pellet form rather than powder. My horse doesn't like it.
    Date published: 2016-08-30
    Rated 5 out of 5 by from Like magic My horse has a degenerative disorder and recently I had a tooth removed on him as well. I've always had a VERY difficult time keeping weight on him and he's the pickiest horse I've ever met. He came out of the surgery at 995lbs looking like a skeleton and 2 months later with the smartgain he's back to around 1200 lbs! He looks incredible. I couldn't be happier!
    Date published: 2016-08-11
    Rated 4 out of 5 by from So far so good. I haven't been feeding this long but it is starting to work. I have a young tb gelding that has been at the trainers getting restarted from the track. He lost weight due to the stress and is now starting to gain it back. Another plus is that his coat is now nice and shiny!
    Date published: 2016-08-09
    Rated 5 out of 5 by from Love It! After just one month on smartgain I noticed my mares "problem areas" (topline, hips) filling in nicely. She can be a picky eater but she LOVES this smartpak....she will goes as far as to give me dirty looks if I forget to put it in her feed! I would recommend this to anyone with a horse who needs to gain some weight or fill in topline :)
    Date published: 2016-07-29
    Rated 4 out of 5 by from growing 4 yr old Tried cocasoya, tried cool cal. This seems to hold weight for my 4 yr old when he's in work. While my hope was to add weight to him I'm happy he isn't dropping any with each growth spurt. Hoping this helps more the longer he's on it.
    Date published: 2016-07-29
    Rated 3 out of 5 by from Adequate Product - Not My Favorite I see better progress with Weight Builder supplement. It seems my starvations are not gaining weight as quickly with this product. Not sure why?
    Date published: 2016-07-28
    Rated 3 out of 5 by from Little Difference My 23-year-old TB loses weight in late spring/early summer, so I wanted to be proactive in preventing weight loss by putting him on this product. Unfortunately, he still lost weight while on this product (and after). He also didn't like the smell/taste - I could only get him to eat it with his grain by first soaking it, then adding it and mixing it in afterwards. My horse gets plenty of protein from alfalfa, so perhaps this product is better suited for horses with less protein-rich foods in their diet that need to gain weight.
    Date published: 2016-07-16
    Rated 5 out of 5 by from Amazing! I started my gelding on this last month and I can already see a huge difference in his weight gain!
    Date published: 2016-07-05
    Rated 5 out of 5 by from SmartGain is a smart choice I bought this product not so much for weight gain as for an added calorie supplement for my OTSTB who is starting a conditioning program for Limited Distance/Endurance. I liked this product for what I needed it for and the powder isn't a dry powder but clingy so it easily mixes well with feed, even pelleted, without adding water/oil. I only stopped using SmartGain as I switched to SmartDigest for the Colic Care.
    Date published: 2016-07-01
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