Product evaluated: Magnesium 5000 (20lb) Calming/Metabolism/Muscle Function Support for Horses
Related Videos For You
Finding The Best Supplement For My Horse - Mega-Dose Supplement For Horses Review
Smarter Horse Supplements Start Here
Data basis: This report used dozens of written reviews and visual demonstrations collected from public product feedback between 2018–Jan 2026. Evidence mix: most feedback came from written reviews, supported by a handful of video demos and user Q&A. Distribution: signals skew toward recent buyers.
| Outcome | Magnesium 5000 (this product) | Typical mid-range alternative |
|---|---|---|
| Price & pack | $89.95 for 20 lb (label shows 160 servings). | Lower to similar cost for 20 lb options in this category. |
| Palatability / acceptance | Higher refusal risk appears repeatedly in user feedback and is more disruptive than normal. | Average acceptance with fewer reported refusals for comparable pellets. |
| Dosing clarity | Confusing serving guidance tied to pellet form and pack labeling. | Clearer dosing or measured scoops are common in mid-range packs. |
| Handling & storage | Messy bag and spill risk reported during pouring and measuring. | Bulk cans or resealable options reduce spill and moisture issues. |
| Regret trigger | Refusal at feed time combined with confusing dosing creates the most buyer regret. | Minor taste tweaks are usually fixable without returning the purchase. |
Top failures buyers should know
Will my horse actually eat this?
Regret moment: Many buyers report the product is refused at first feed, creating immediate waste and frustration.
Pattern: This is a primary concern and appears repeatedly across recent feedback.
When it happens: Refusal is most common during the first week of use and when pellets are offered dry or mixed with plain feed.
Why worse than typical: Mid-range horse supplements usually have higher initial acceptance; repeated refusal forces extra masking steps or returns.
Why is pouring and storing so annoying?
- Mess on pour: Bag design causes spills when measuring from the 20 lb pack.
- Storage needs: Buyers report a need for extra airtight containers to avoid moisture and clumping.
- Extra gear: Measuring cups or scoops are commonly required because the pack lacks a measuring tool.
- Transport friction: Heavy 20 lb bag is awkward for one person to handle when topping bins.
- Hidden cost: Buyers often buy separate storage, adding time and money after purchase.
How hard is it to dose correctly?
- Label ambiguity: The pack lists 160 servings, which many buyers find hard to translate into daily scoops.
- Risk of over/under-dose: Confusion increases when owners switch horses or change feeding schedules.
- Requires calibration: Users commonly weigh or measure doses to match expected intake.
- When it gets worse: Dosing problems intensify during daily mixed feeds or when feeding multiple horses.
- Category contrast: Many mid-range alternatives include scoop sizes or clearer gram guidance, making dosing simpler.
- Fix attempts: Users report time spent creating their own charts or using kitchen scales to avoid mistakes.
Will it produce the calming or metabolic changes I expect?
- Inconsistent results: Effectiveness is a commonly reported secondary issue and varies by horse.
- Time to see change: Improvements are often slow and may need weeks of consistent use.
- When it fails: Lack of observable benefit is most noted after one month of daily use.
- Impact: Owners note wasted feed if horses refuse or show no change, increasing cost per useful serving.
- Attempts to improve: Some buyers combined this with other supplements or changed feeding methods to chase results.
- Category baseline: Comparable products more often report steadier results when palatability and dosing are clear.
- Hidden requirement: Buyers frequently need veterinary guidance to evaluate true benefit, adding time and expense.
- Repairability: If your horse dislikes the pellets, switching products is often the only fix.
Illustrative excerpts (not real quotes)
"Refused pellets first two feeds; wasted a full cup." — primary pattern
"Had to buy airtight bins after bag clumped in humidity." — secondary pattern
"Label says 160 servings but unclear scoop size." — primary pattern
"No calm change after a month of daily feeding." — secondary pattern
Who should avoid this

- Owners of picky eaters: If your horse commonly refuses new pellets, consider avoiding this product.
- Shoppers needing clear dosing: If you want simple scoop guidance, this pack creates extra measurement steps.
- Small stables without storage: If you cannot store a 20 lb bag in airtight conditions, expect clumping and waste.
Who this is actually good for

- Experienced handlers: Buyers comfortable measuring doses and masking flavors can tolerate palatability issues.
- Large stables: Facilities that use bulk feed systems can absorb the 20 lb size and handling burden.
- Those price-flexible: If you accept extra steps for a specific formula, you may tolerate the trade-offs.
Expectation vs reality

Expectation: A 20 lb pellet supplement will mix easily and be accepted by most horses, a reasonable standard for this category.
Reality: This product often fails initial acceptance and requires extra masking or storage solutions, making the experience worse than expected.
Expectation: Pack labeling will give clear servings.
Reality: The stated 160 servings creates confusion without scoop size, forcing users to measure independently.
Safer alternatives

- Choose measured packs: Look for supplements with a supplied scoop to neutralize dosing confusion.
- Prefer resealable containers: Pick cans or resealable bags to avoid moisture issues and extra storage buys.
- Test sample sizes: Seek small trial packs first to check palatability before committing to 20 lb.
- Check clear labels: Buy brands that state scoop grams or ml per serving to avoid calibration work.
The bottom line

Main regret: The biggest trigger is refusal at feed time combined with unclear dosing and bulky packaging.
Risk level: These issues exceed normal category risk because they cause waste, added cost, and extra work.
Verdict: Avoid this product if you need easy acceptance, clear dosing, or low handling effort.
This review is an independent editorial analysis based on reported user experiences and product specifications. NegReview.com does not sell products.

