What’s in it
The full ingredient list is one word: Beef Liver. Vital Essentials processes USDA-inspected beef liver through a freeze-drying chamber that removes moisture at low temperature, concentrating the nutrition of roughly three pounds of fresh liver into every pound of the finished treat. No heat pasteurization, no preservatives, no sprayed-on palatants, no binders, no fillers. The only downstream step is size-breaking into bite-sized pieces.
This places the product in our single-ingredient freeze-dried function class — the top tier of the treats rubric’s ten function classes, carrying a +6 function-class bonus on top of the +20 single-ingredient simplicity credit. Liver itself is a nutrient-dense organ meat: it is a concentrated source of vitamin A, vitamin B12, iron, copper, and high-quality animal protein. A single freeze-dried liver cube delivers roughly 7 kcal, which makes it small enough to use as a high-value training reward without pushing a medium-sized dog over the 10% daily-calorie treat ceiling.
The good stuff
Ingredient transparency is effectively absolute — there is nothing on the panel to analyze beyond the one ingredient listed. That simplicity is exactly what the treats category optimizes for: the fewer the ingredients, the fewer the places where cost-reduction shortcuts can hide. Shop on Amazon →
Freeze-drying preserves nutrient density that cooking would degrade. Heat-sensitive vitamins (B-complex, vitamin C) and omega-3 fatty acids survive the sublimation process far better than they survive extrusion, baking, or smoking. For a functional treat — a training reward, a pilling aid, or a high-value enrichment snack — the nutrient retention argument is meaningful.
The product carries the AAFCO “intermittent or supplemental feeding only” statement on the packaging, which is the expected and correct label for any treat. Vital Essentials also discloses the per-piece calorie count on the bag, which our rubric rewards under the transparency axis — many single-ingredient freeze-dried competitors leave calorie density off the label entirely.
The not-so-good stuff
For dogs with copper-storage disease (notably Bedlington Terriers, Labradors, and West Highland White Terriers with documented copper-accumulation genotypes), beef liver is contraindicated because of the high copper content. This is a condition-specific caution rather than a rubric deduction — the treat itself is formulation-clean, but if your dog has been diagnosed with copper-related liver disease, talk to your veterinarian before offering any organ-meat treat.
Price per ounce is substantially higher than biscuit-class treats. The freeze-drying process and the weight-loss-during-dehydration economics mean a bag that looks small on the shelf represents multiple pounds of starting raw liver. For owners on a training regimen that goes through hundreds of rewards per week, a softer training treat at a fraction of the cost per unit may be the more practical day-to-day reward, with freeze-dried liver reserved as the high-value jackpot treat.
There are no active FDA recall or safety advisories on Vital Essentials’ freeze-dried product line as of this review’s verification date. Responsible handling remains prudent — treat the product as you would any shelf-stable animal protein.
How it compares
Vital Essentials A/93 sits at the top of our treats tier list. The next-closest competitor in our initial batch is Charlee Bear Grain-Free Turkey Liver (A/90), which is also a single-protein-led treat but uses a jerky format and includes chickpea, pea flour, and pea protein in the ingredient panel — a legume stack our rubric flags under the FDA’s canine dilated cardiomyopathy investigation.
Against the popular training-treat tier, Vital Essentials outscores Zuke’s Mini Naturals Chicken (B/78) primarily on the strength of its single-ingredient simplicity — Zuke’s is a meaningfully cleaner treat than mass-market biscuits, but it carries ground rice, tapioca starch, vegetable glycerin, and chickpeas as binders. Against the mainstream-biscuit tier, the gap widens dramatically: Milk-Bone Original (D/38) is a different product category in every meaningful sense. And against functional dental chews like Greenies Original Regular (C/58), Vital Essentials lacks the dental-mechanical-action function claim but wins decisively on the underlying ingredient panel.
The bottom line
Vital Essentials Freeze-Dried Beef Liver earns an A grade (93/100) on KibbleIQ’s treats rubric. It is the closest a dog treat comes to a perfect score under our methodology — one ingredient, no fillers, no preservatives, a named organ meat as the sole input, and a low enough calorie density per unit to function well in high-volume training. Use it for what it does best: the high-value reward, the pilling aid, the enrichment-feeder payload. And remember the 10% rule — a 50-pound adult dog has roughly a 110 kcal treat budget per day, which is about 15 of these liver cubes. Shop on Amazon →