7 Best Low Sodium Dog Treats for Heart Murmur (2026)

Unleash primal nutrition with a treat that taps into your dog’s biological need for raw, muscle-rich protein. The Vital Essentials Freeze-Dried Chicken Hearts stand out with their single-ingredient purity and ultra-fast 45-minute freeze process, locking in natural enzymes, vitamins, and flavor that support heart health and energy levels—critical for dogs managing a heart murmur. Unlike heavily processed kibble or baked treats, these deliver raw nutritional density without additives, making them ideal for pups needing clean, low-sodium support without compromising on taste or vitality.

In real-world use, these lightweight, crunchy morsels dissolve easily during training, making them excellent for senior dogs or smaller breeds who need soft chewability without moisture-heavy textures. Each 1.9 oz bag offers high protein per gram—over 60%—with zero grains, fillers, or sodium-laden preservatives that could exacerbate cardiac strain. We tested them across multiple breeds, and even picky eaters gobbled them up instantly. That said, because they’re pure organ meat, they’re not formulated to be low in phosphorus or protein, which may not suit dogs with concurrent kidney concerns often linked to heart disease.

Compared to other freeze-dried options like Stella & Chewy’s or Pupford, Vital Essentials matches them in ingredient integrity but falls slightly short in volume for frequent training use due to smaller pack size. Still, it’s a top-tier choice for pet parents prioritizing raw, biologically appropriate feeding and seeking a premium single-source heart treat that aligns with natural canine nutrition. While it lacks the heart-shaped whimsy or philanthropic angle of Mattie’s Treats, it outperforms in raw nutrient retention and protein quality—ideal for dogs thriving on high-bioavailability diets.

Heart-healthy meets heart-shaped in a treat that’s as compassionate as it is carefully crafted. Mattie’s Mini Treats shine with their triple-low profile: low sodium, low protein, low phosphorus—a nutritional trifecta essential for dogs with heart murmurs, especially when kidney function is a concern. These crunchy, bite-sized hearts are made with just six simple ingredients, including real pumpkin and cinnamon, delivering a mildly sweet flavor dogs love without spiking blood pressure or taxing vital organs. For owners managing complex health conditions, this is peace of mind in a treat form.

We tested these with senior dogs on cardiac diets and found they crunched easily, even for pups with dental wear. The 10 oz box offers generous portions for daily use, and the mini size allows for precise feeding—perfect for medication masking or portion control. The inclusion of fish oil provides omega-3s, which help reduce inflammation and support cardiovascular function. However, because they’re baked and grain-inclusive (light rye), they lack the raw nutrient intensity of freeze-dried organ treats and may not excite ultra-picky eaters used to meat-heavy flavors.

When stacked against the 1-pound Mattie’s box, this version offers the same stellar formula in a more manageable size, making it better for small dogs or those needing controlled intake. Compared to high-protein chicken heart options, it’s the smarter long-term choice for dogs with comorbidities—balancing safety, simplicity, and sustainability. While it doesn’t deliver the raw vitality of freeze-dried meats, it wins on dietary compatibility and purpose-driven nutrition, especially when low sodium and organ support are non-negotiable.

Big bag, big heart, and bigger value—this 1-pound box of Mattie’s Treats is the gold standard for long-term, health-conscious feeding. Engineered for dogs with heart murmurs and kidney sensitivities, these crunchy, heart-shaped treats deliver the same triple-low benefit—low sodium, low protein, low phosphorus—in a bulk format that lasts. Made with simple, recognizable ingredients like pumpkin, tapioca, and fish oil, they’re designed to complement medical diets without sneaking in hidden sodium or harmful additives.

In extended use, the larger box proved economical and practical for multi-dog homes or daily treat routines. The crisp texture holds up well in treat jars, and dogs responded positively to the warm cinnamon-pumpkin aroma—a rare win for therapeutic treats that often taste medicinal. Omega-3s from fish oil offer subtle cardiac support, while the low phosphorus content eases renal load. That said, the light rye flour base may not suit grain-sensitive dogs, and the baked profile lacks the raw nutrient punch of freeze-dried organ meats, making it less ideal for high-drive training.

Compared to the 10 oz mini version, this pound box offers better value for consistent use, especially for families managing chronic conditions. Against protein-heavy options like Dr. Harvey’s or Pupford, it sacrifices muscle-supporting protein levels but wins in overall dietary safety and organ protection. For dogs where cardiac and kidney health intersect, this treat isn’t just food—it’s nutritional stewardship with every bite, outperforming pricier freeze-dried picks in clinical appropriateness and long-term sustainability.

Break the allergy barrier with a novel protein powerhouse that turns dietary restrictions into delight. ADC Houndstone & Co.’s Duck Heart treats are a game-changer for dogs with sensitivities to common proteins like chicken or beef—offering a single-ingredient, freeze-dried duck heart formula that’s rich in iron and highly digestible. For dogs with heart murmurs who also battle skin allergies or GI upset, this treat delivers clean, species-appropriate nutrition without hidden sodium or inflammatory triggers. The ethically sourced, USA-made promise adds peace of mind for discerning owners.

In feeding trials, dogs showed high interest—likely due to the intense, gamey aroma unique to duck—and chewed them easily, even with dental limitations. The 2 oz bag is compact but potent, offering dense iron and B-vitamin content that supports oxygen transport and heart function. However, because it’s pure organ meat, it’s naturally higher in protein and phosphorus, which may not align with strict cardiac or kidney diets. It also lacks added omega-3s or sodium monitoring, so it’s best used as an occasional high-value reward, not a daily staple.

Versus chicken heart options like Stella & Chewy’s or Vital Essentials, this stands out as a strategic rotation treat—perfect for dogs needing protein variety without compromising on raw quality. While it doesn’t offer the heart-health-specific formulation of Mattie’s, it excels in allergen avoidance and ethical sourcing. For pet parents seeking a clean, novel protein boost that won’t spike sodium or trigger reactions, it outshines standard picks in niche versatility and ingredient integrity, even if it’s not the top call for strict cardiac management.

Training redefined—these 4.25 oz of freeze-dried chicken hearts are a behavioral game-changer for dog owners who demand high motivation with zero mess. Pupford’s treats deliver pure, single-ingredient chicken hearts in a lightweight, non-greasy format that stays fresh in pockets or treat bags—ideal for long training sessions where low sodium and high reward value must coexist. With no fillers, additives, or preservatives, they support heart health through natural taurine and B-vitamin content, crucial for cardiac muscle function.

We tested these with puppies, seniors, and rescue dogs—all responded with instant enthusiasm, even those with diminished appetites due to medication. The freeze-dried texture breaks easily, allowing for micro-rewards without overfeeding, and the 4.25 oz size offers more volume than most competitors in the single-ingredient space. However, like all chicken heart treats, they’re naturally high in protein and phosphorus, so they’re not suitable for dogs with kidney compromise often linked to heart disease.

Compared to Dr. Harvey’s or Stella & Chewy’s, Pupford strikes a sweet spot between value and usability—more affordable than Dr. Harvey’s while matching it in protein quality. Against Mattie’s, it lacks low-sodium formulation, but wins in palatability and training efficiency. For dogs with heart murmurs who still need high-drive reinforcement, these are unbeatable in performance, offering raw nutrition with practical convenience—just reserve them for dogs without renal restrictions.

Powerhouse protein meets purity in a treat that’s engineered for vitality—not just reward. Dr. Harvey’s Freeze-Dried Chicken Hearts deliver 65% pure protein with just 5% fat, making them one of the leanest, most nutrient-dense options for dogs needing muscle support without cardiac strain. For pups with heart murmurs requiring high-energy, low-fat nutrition, these treats offer natural taurine, iron, and B-vitamins in a form that’s easily absorbed and enthusiastically eaten. The 7 oz bag is generous, and the no-refrigeration, 30-day shelf life after opening makes it practical for daily use.

In real-world testing, these proved exceptionally palatable, even for dogs on appetite-suppressing meds. The crisp, airy texture dissolves quickly, reducing choking risk for older dogs, and the single-ingredient transparency builds trust with owners wary of hidden sodium or fillers. However, like all organ-based treats, they’re naturally high in phosphorus, which can be problematic if kidney health is a concern—limiting their use in dogs with comorbid conditions.

Compared to Pupford or Stella & Chewy’s, Dr. Harvey’s offers larger volume and superior protein-to-fat ratio, justifying its higher cost for performance-focused owners. Against Mattie’s, it lacks low-sodium formulation, but outshines it in raw nutritional impact and energy support. For dogs where heart health and muscle maintenance go hand-in-hand, this is the elite-tier choice, delivering clinical-grade protein with uncompromised purity—ideal for active, lean dogs without renal limitations.

Raw indulgence meets cardiac care in a treat that seduces even the pickiest palate. Stella & Chewy’s Freeze-Dried Chicken Hearts are 100% raw, single-ingredient morsels packed with taurine, iron, and omega-3s—nutrients directly linked to heart muscle strength and circulatory health. For dogs with murmurs, this high-value, low-sodium profile delivers essential support without the bloat or additives found in conventional treats. The 3 oz bag is travel-ready, and the intense natural flavor makes it a standout for training or medication coaxing.

We observed dogs leap for these treats even after meals—proof of their irresistible raw appeal. The freeze-dried process preserves enzymes and vitamins that cooked treats destroy, offering bioavailable nutrition that supports coat shine, digestion, and energy. However, the smaller 3 oz size means quicker turnover, and like all chicken hearts, they’re naturally high in protein and phosphorus, so they’re not ideal for dogs with kidney involvement.

Against Vital Essentials, Stella & Chewy’s matches purity but offers better brand trust and broader availability. Compared to Mattie’s, it lacks low-sodium formulation, but wins in raw nutrient density and picky-eater appeal. For dogs needing maximum nutritional payoff in a bite-sized reward, this treat delivers primal power with modern precision, making it the top single-ingredient raw pick—just pair it with vet guidance for long-term cardiac diets.