One minute, your horse looks just fine, and the next, they’re starting to lose weight so much it’s now looking like they’ve skipped a few dinners. Before you panic or overfeed every crumb in the barn, call your vet and have them rule out any underlying health issues. While some horses are built leaner, others are fussy, anxious, ageing, or burning more energy than they take in. Whatever the reason, weight gain supplements for horses can save the day.
Sometimes, helping your horse gain healthy weight isn’t just about stuffing them with more hay or tossing in sugary feeds, which can even backfire. What you need are proper weight gain supplements for horses. These are special feeds or add-ons full of the right kind of calories, fibre, oils and nutrients. They help your horse fill out without making them hyper, bloated or uncomfortable.
So, think of it like giving your horse an extra helping of something hearty, not just chucking more on their plate. We know this might sound like a mystery, so we came up with this guide. We’ve put together 10 brilliant weight gain supplements you can easily find around you.
Top 10 Weight Gain Supplements for Horses
1. Spillers Digest+ Conditioning Cubes
Spillers Digest+ Conditioning Cubes are chunky and smell like hay mixed with bran. Packed with oil and fibre but low in starch, they provide steady energy without turning your horse into a handful. This is your go-to supplement if your horse has a delicate stomach or cannot tolerate sugary feeds. These cubes help with safe weight gain, support digestion and suit both elderly ponies and lively cobs. If you are starting to explore weight gain supplements for horses and want something simple and gentle, this one makes a lovely first choice. You can get it here.
2. TopSpec Comprehensive Feed Balancer
Formulated into fine brown pellets, TopSpec Comprehensive Feed Balancer has a wholesome, vitamin-y smell. Although small, these pellets pack essential nutrients, with a clever mix of protein, minerals and gut support that helps your horse make the most of whatever it’s eating. This is one of the best weight gain supplements for horses that are slim, sluggish or just not looking their best. It’s a proper all-rounder that quietly gets the job done from the inside out. Click here to get it.
3. Saracen Condition Improver Cubes
These dense, light-brown cubes smell faintly sweet, like grain and molasses, and crumble easily between your fingers. This one’s special because it contains Equi-Jewel, a clever rice bran ingredient that delivers concentrated calories without overload. Saracen Condition Improver Cubes are easy to chew and go down well, even with picky eaters or older horses with less bite. If you have a thoroughbred struggling to hold weight or a golden oldie tired out, these cubes can work wonders. You can get it here.
4. Cavalor WholeGain
Similar to a chunky muesli mix, full of grains and glossy bits that glisten slightly from the oily ingredients, Cavalor WholeGain smells rich and nutty, almost like toasted oats. Cavalor WholeGain is best for horses that need conditioning without the bloat, as it delivers slow-release energy and helps build healthy weight gradually. It is also brilliant for adding a lovely shine to coats, which is a bonus if your horse is heading to a show. It’s posh and polished, perfect for horses in regular work who need to look and feel their best. You can check it out here.
5. Equimins Straight Herbs Brewers Yeast
With a soft, floury texture, Equimins Straight Herbs Brewers Yeast is a pale, fine powder that smells like warm bread dough. Amongst the best weight gain supplements for horses, this yeast plays a quiet and vital role in your horse’s digestion. As a healthier gut means better appetite and more efficient use of every mouthful, nervous or fussy eaters often benefit from a little brewers’ yeast sprinkled into their feed. It can help them settle, eat more willingly, and maintain their condition in a steady, manageable way. This one is less about bulk and more about what’s happening inside. You can click here to get it.
6. Global Herbs Restore Liquid
Global Herbs Restore Liquid is a thick, dark brown syrup that smells strongly of herbs and earth, and pours slowly like treacle. It is not your typical feed, but it works wonders behind the scenes. Designed as a liver tonic, it helps horses bounce back after illness, stress, or a rough patch. By supporting the liver it improves appetite and helps the body better use the nutrients in food. If your horse is run down or not thriving, this can be a gentle nudge in the right direction. You can get it here.
7. Global Herbs Restore Powder
Global Herbs Restore Powder smells earthy and slightly bitter like dried leaves after rain. It’s the dry version of the liquid tonic, and ideal if you prefer not to deal with sticky bottles. Sprinkle it into feed and it works quietly, helping the liver and digestive system do their jobs properly. That means better appetite, better use of nutrients and a much happier horse overall. This is one of the go-to weight gain supplements for horses that are old or on medication, focusing on setting things right internally so the rest can follow naturally. You can get it here.
8. Allen & Page Calm & Condition
Starting as a fluffy mix and turning into a warm, soft mash once soaked, Allen & Page Calm & Condition smells gentle and grassy, like porridge for ponies. Allen & Page is perfect for horses that need extra calories but can’t chew well or get unsettled by rich feeds. The balance of fibre and oil helps build condition without causing silly behaviour. It is also helpful for older horses or those recovering from illness, who need something easy to eat and digest. Click here to check it out.
9. Baileys No. 4 Conditioning Cubes
These large, smooth brown cubes have a rich, cereal-like smell and a firm texture that holds up well in the feed bucket. Baileys No. 4 Conditioning Cubes are packed with oil and protein, making them a solid choice for building both weight and muscle without turning your horse into a rocket. They are convenient for leisure horses or those in light work that still need to fill out. Easy to feed, widely trusted and readily available, they tick all the right boxes. This one is a proper staple when it comes to straightforward, no-fuss supplements to help your horse gain weight. You can find Baileys here.
10. Dengie Alfa-A Oil
Dengie Alfa-A Oil resembles chopped green hay with a silky golden sheen from the soya oil. It smells fresh and grassy, with just a hint of richness from the oil. Full of slow-release energy and highly digestible fibre, it is ideal for horses that need weight without the risk of fizzy behaviour. It is also grain-free, which makes it an excellent option for horses with sensitive systems or those that cannot tolerate cereals. It offers a natural, steady way to build condition while leaving your horse with a lovely, shiny coat. You can get it here.
Conclusion
Helping a horse gain healthy weight doesn’t have to be a guessing game. With the proper support, even the fussiest or most delicate horses can start to thrive. The weight gain supplements for horses we’ve shared here are not just about bulking up, they’re about doing it safely, steadily and sensibly, as you should when feeding your horse strawberries. For extra shine or serious condition, something on this list can make a real difference for your house.
FAQs
What is a super weight gain supplement for horses?
Saracen Condition Improver Cubes are a powerful choice with proven results.
What puts the most weight on a horse the fastest?
Feeds rich in oil and digestible fibre tend to add weight most effectively without causing fizz.
Which supplement is best for weight gain?
It mainly depends on the horse, but TopSpec Comprehensive Feed Balancer is a solid all-around option.
