Science Supplements
Science Supplements is a British, vet- and scientist-led equine nutrition brand that makes researched feed supplements for everyday horses, veterans and competition horses. The range on Just Horse Riders spans 34 products, priced from £4.30, and covers calming (ProKalm), joint support (FlexAbility), digestive care (Gut Balancer), respiratory support (RespirAid), hoof care (4Feet) and daily Wellhorse balancers, plus electrolytes, coat and grooming essentials.
Free UK delivery over £50 · Next-day on eligible items ordered before 4pm · 90-day returns · Family-run UK retailer since 2010.
In a hurry?
- Science Supplements ProKalm — fast-acting calming support, from £45.78
- Science Supplements Gut Balancer — daily digestive and hindgut support, from £41.24
- Science Supplements FlexAbility+ Plus — joint and mobility support, from £67.91
- Science Supplements RespirAid — respiratory support, from £13.99
- Science Supplements 4Feet Plus — hoof and horn support, from £45.78
What does Science Supplements make?
Science Supplements is an equine nutrition company founded on veterinary and animal-science research. Rather than a single product type, it produces a broad family of supplements grouped into clear ranges so you can match a product to a specific need. The best-known ranges stocked here are ProKalm (calming and behaviour), FlexAbility (joints and mobility), Gut Balancer (digestive health), RespirAid (respiratory), 4Feet (hoof condition) and the Wellhorse daily balancers for leisure, performance and veteran horses. Alongside these sit electrolytes and hydration products (SafeSalt, Complete Electrolytes, Energex), skin and coat support, Muscle Builder, LiverAid, ImmunAid and a small number of grooming and canine (K9) lines.
Which Science Supplements range is right for me?
Start from the outcome you are looking for, then choose the range that targets it. Supplements support a balanced diet and management routine — they are not a substitute for veterinary care. If your horse has a diagnosed problem, or you are unsure, speak to your vet or a qualified nutritionist before starting anything new.
| Range | Best for | Typical starting point |
|---|---|---|
| ProKalm | Nervous, spooky or anxious horses; occasional or daily calming | ProKalm, from £45.78 |
| FlexAbility | Joint, stiffness and mobility support for working and older horses | FlexAbility+ Plus, from £67.91 |
| Gut Balancer | Everyday digestive and hindgut health | Gut Balancer, from £41.24 |
| RespirAid | Airway and respiratory support | RespirAid, from £13.99 |
| 4Feet | Weak, cracked or slow-growing hooves | 4Feet Plus, from £45.78 |
| Wellhorse | Complete daily balancer for leisure, performance or veteran horses | Wellhorse Leisure, from £27.63 |
How do I choose the right size or strength?
Many ranges come in more than one form: a standard daily version, a higher-specification "Plus" or "Professional" version for tougher cases, and sometimes a fast-acting "Express" version for short-term use. A common approach is to start on the higher-specification product while you build condition, then move to the standard maintenance version once things improve. Always follow the feeding guide on the tub and introduce any new supplement gradually.
Which Science Supplements products do we recommend?
- Science Supplements ProKalm (from £45.78) — the brand's flagship calmer; the manufacturer reports it can act within about 30 minutes of feeding and does not sedate.
- Science Supplements FlexAbility+ Plus (from £67.91) — a high-specification joint supplement for horses in regular work or feeling their age.
- Science Supplements Gut Balancer (from £41.24) — a popular everyday prebiotic and live-yeast digestive support.
- Science Supplements RespirAid (from £13.99) — respiratory support, with a smaller starter size making it an easy first try.
- Science Supplements 4Feet Plus (from £45.78) — biotin-rich hoof support for cracked or slow-growing hooves.
- Science Supplements Muscle Builder (from £46.45) — for horses building topline and muscle through correct work.
Care, feeding and related ranges
Introduce any supplement gradually over 7–10 days, store tubs sealed and cool, and keep to the recommended scoop so a tub lasts as expected. If you are feeding more than one product, check for overlapping ingredients with your vet or nutritionist to avoid doubling up. Explore the focused Science Supplements ranges below:
- Calming & behaviour
- Joint & mobility
- Digestive health
- Respiratory support
- Feet & hoof care
- Energy & electrolytes
Science Supplements FAQs
What does Science Supplements make?
Research-led equine feed supplements grouped into clear ranges: ProKalm (calming), FlexAbility (joints), Gut Balancer (digestion), RespirAid (respiratory), 4Feet (hooves) and Wellhorse daily balancers, plus electrolytes, skin and coat, muscle and liver support and a few grooming and canine lines.
Is Science Supplements suitable for my horse?
The range is formulated for horses and ponies at different life stages and workloads. Supplements support — but do not replace — a balanced diet, good management and veterinary care. If your horse has a diagnosed condition or is on medication, check with your vet before starting a new supplement.
How much do Science Supplements products cost?
In-stock prices currently range from about £4.30 for care essentials up to around £340 for the largest joint-supplement tubs. Most daily supplements sit around £40–£70, with smaller starter and Express sizes available for several ranges.
How quickly do the supplements work?
It depends on the product and the horse. Fast-acting calmers such as ProKalm are designed for short notice — the manufacturer reports action within about 30 minutes of feeding — while joint, hoof and digestive supplements are fed daily and are generally assessed over several weeks. Follow the feeding guide and give each product time.
Are Science Supplements suitable for competition horses?
Many products in the range are made with competition use in mind, but rules change and each governing body has its own prohibited-substance list. Always check the current product label and your discipline's rules before competing, and contact us or the manufacturer if you need clarification.
Do you offer free delivery on Science Supplements?
Yes — UK orders over £50 ship free, with next-day delivery available on eligible items ordered before 4pm. All orders are covered by our 90-day returns policy.
Independent buying advice from the Just Horse Riders team — last reviewed 12 July 2026.