Hydrolized Dog Food: Hydrolyzed Protein Diets for Allergies
hydrolized dog food: how hydrolyzed protein diets work for allergies and IBD, top brands, feeding amounts, transition tips, and what to avoid.
If your dog has been scratching nonstop, battling chronic ear infections, or dealing with persistent digestive upset, your veterinarian may have mentioned a term that sounds more like a chemistry lab than a dog bowl: hydrolized dog food. More accurately called hydrolyzed protein dog food, this specialized diet is one of the most effective tools in veterinary nutrition for diagnosing and managing food allergies, inflammatory bowel disease (IBD), and certain gastrointestinal conditions.
But hydrolyzed diets aren't your average bag of kibble. They're scientifically formulated, prescription-only in most cases, and require a clear understanding of how they work, how to feed them properly, and how to monitor whether they're actually helping your dog. This guide covers every practical detail — from protein molecular weights to feeding calculators to the exact transition schedule your dog needs.
What Is Hydrolyzed Dog Food and How Does It Work?
Hydrolyzed dog food contains proteins that have been chemically broken down (hydrolyzed) into tiny fragments — typically peptides with a molecular weight below 10 kilodaltons (kDa), and often below 5 kDa. For context, a typical intact chicken protein molecule weighs 40-150 kDa.
Here's why that matters: a dog's immune system recognizes foreign proteins by their size and shape. When protein fragments are small enough — generally under 10 kDa — the immune system essentially can't "see" them. The proteins are still nutritionally complete, providing all essential amino acids, but they no longer trigger the IgE-mediated immune response that causes allergic reactions.
According to the Merck Veterinary Manual, hydrolyzed diets serve two primary clinical purposes:
- Diagnostic elimination trials: Determining whether a dog's symptoms are truly caused by food allergies (which affect an estimated 1-2% of all dogs and roughly 10-15% of dogs with allergic skin disease)
- Long-term management: Providing a nutritionally complete diet that avoids triggering immune responses in dogs with confirmed food allergies or IBD
Hydrolyzed vs. Novel Protein vs. Limited Ingredient
Understanding where hydrolyzed diets fit among other therapeutic options helps clarify when they're the right choice:
| Diet Type | How It Works | Best For | Limitation |
|---|---|---|---|
| Hydrolyzed Protein | Proteins broken below immune-detection threshold | Multi-allergy dogs, IBD, elimination trials | Higher cost, some dogs react to trace peptides |
| Novel Protein | Uses proteins the dog has never eaten (venison, rabbit, kangaroo) | Single-protein allergy, first elimination trial | Cross-reactivity possible, limited long-term options |
| Limited Ingredient (LID) | Fewer total ingredients to reduce exposure | Mild sensitivities, maintenance after trial | Not truly hypoallergenic, cross-contamination risk |
Nutritional Requirements: What Hydrolyzed Diets Must Deliver
A common misconception is that hydrolyzed diets are nutritionally inferior because the proteins are "processed." In reality, veterinary-formulated hydrolyzed diets must meet the same AAFCO (Association of American Feed Control Officials) nutrient profiles as any other complete and balanced dog food. Here's what to expect from a quality hydrolyzed diet:
| Nutrient | Adult Maintenance (Minimum) | Typical Hydrolyzed Diet Range | Why It Matters |
|---|---|---|---|
| Crude Protein | 18% (DM basis) | 18-25% (DM basis) | Muscle maintenance, immune function, coat health |
| Crude Fat | 5.5% (DM basis) | 10-20% (DM basis) | Energy density, essential fatty acids for skin barrier |
| Caloric Density | ~3,200-3,800 kcal/kg | 3,300-4,100 kcal/kg | Gut-friendly diets often use moderate fat for digestibility |
| Omega-3 Fatty Acids (EPA+DHA) | Not required by AAFCO minimum | 0.3-1.5% (DM basis) | Anti-inflammatory support for skin and gut lining |
| Fiber (Crude) | No maximum set | 1-5% (DM basis) | Moderate fiber supports GI motility without irritation |
| Calcium | 0.5% (DM basis) | 0.6-1.2% (DM basis) | Bone health, muscle function |
Daily caloric needs by weight for an average adult dog on a hydrolyzed diet (assuming moderate activity, neutered/spayed):
- 10 lb (4.5 kg): ~250-300 kcal/day
- 20 lb (9 kg): ~420-500 kcal/day
- 40 lb (18 kg): ~700-830 kcal/day
- 60 lb (27 kg): ~950-1,120 kcal/day
- 80 lb (36 kg): ~1,170-1,380 kcal/day
- 100 lb (45 kg): ~1,375-1,620 kcal/day
These are starting points. Adjustments for activity level, metabolism, age, and body condition score are covered in the feeding section below.
Conditions That Benefit From Hydrolyzed Protein Diets
Not every itchy dog needs a hydrolyzed diet. These diets are specifically indicated for certain clinical scenarios, and understanding when they're appropriate helps you have a more informed conversation with your vet.
Canine Adverse Food Reactions (Food Allergies)
True food allergies in dogs are immune-mediated responses, most commonly to protein sources like beef, chicken, dairy, wheat, egg, and lamb. Symptoms include:
- Non-seasonal pruritus (itching) — especially paws, ears, groin, and perianal area
- Recurrent ear infections (otitis externa) that don't respond fully to topical treatment
- Gastrointestinal signs in 10-30% of cases: chronic diarrhea, vomiting, increased bowel frequency
A hydrolyzed diet serves as the gold-standard elimination trial: feed exclusively for 8-12 weeks, monitor symptom resolution, then challenge with the original diet to confirm diagnosis.
Inflammatory Bowel Disease (IBD)
IBD involves chronic inflammation of the gastrointestinal tract, often with an immune component triggered by dietary antigens. Hydrolyzed diets reduce the antigenic load reaching the gut-associated lymphoid tissue (GALT), which can decrease inflammation and improve nutrient absorption. Studies published in the Journal of Veterinary Internal Medicine have shown that hydrolyzed diets can be as effective as elimination diets using novel proteins for managing canine chronic enteropathies.
Puppy Considerations
Some hydrolyzed diets are formulated for all life stages, including growth. If a puppy shows signs of food allergy (rare but possible, typically presenting as early-onset pruritus or GI distress), a veterinarian may prescribe a growth-appropriate hydrolyzed formula. These will carry an AAFCO statement confirming suitability for growth or "all life stages" and will contain higher protein (minimum 22% DM) and fat (minimum 8.5% DM) to support development.
Senior Dogs and Weight Management
Senior dogs with lifelong food allergies need continued hydrolyzed feeding. For overweight dogs on these diets, your vet may recommend a calorie-controlled portion rather than switching formulas, since hydrolyzed options for weight management are limited. Reducing portions by 10-15% while maintaining the hydrolyzed formula is a common approach.
Top Recommended Hydrolyzed Dog Foods (2026 Selection)
The hydrolyzed diet market is dominated by veterinary prescription brands. Here are the most clinically established options your vet is likely to recommend, with real-world pricing and nutritional profiles:
1. Royal Canin Veterinary Diet Hydrolyzed Protein HP (Dry)
Protein Source: Hydrolyzed soy protein (molecular weight <1 kDa in the HP formula)
Guaranteed Analysis: Crude protein 19% min, crude fat 14% min, crude fiber 5% max
Caloric Content: ~3,498 kcal/kg (~306 kcal/cup)
Price Range: $42-55 for a 12 lb bag; $80-105 for a 25 lb bag
Best For: Adult dogs with confirmed food allergies, elimination trials
AAFCO Statement: Adult maintenance
Key Feature: Extremely low molecular weight peptides; one of the most extensively hydrolyzed diets available
2. Royal Canin Veterinary Diet Hydrolyzed Protein PS (Dry)
Protein Source: Hydrolyzed soy + hydrolyzed poultry (peptides <3 kDa)
Guaranteed Analysis: Crude protein 18% min, crude fat 12% min, crude fiber 5.5% max
Caloric Content: ~3,410 kcal/kg (~296 kcal/cup)
Price Range: $38-48 for a 12 lb bag
Best For: Dogs with mild food sensitivities, maintenance after successful HP trial
AAFCO Statement: Adult maintenance
Key Feature: Slightly larger peptide size than HP; more affordable for long-term feeding
3. Hill's Prescription Diet z/d (Dry)
Protein Source: Hydrolyzed chicken protein (hydrolyzed to amino acids and small peptides)
Guaranteed Analysis: Crude protein 19.1% min, crude fat 16.4% min, crude fiber 1.5% max
Caloric Content: ~3,561 kcal/kg (~344 kcal/cup)
Price Range: $45-58 for an 11 lb bag; $85-110 for a 25.5 lb bag
Best For: Food allergies with concurrent skin issues; high omega-3 content supports skin barrier
AAFCO Statement: Adult maintenance
Key Feature: Contains added omega-3 fatty acids from fish oil; clinically tested for dermatologic response
4. Hill's Prescription Diet z/d Low Allergen (Wet/Canned)
Protein Source: Hydrolyzed chicken
Guaranteed Analysis: Crude protein 5.5% min, crude fat 3.5% min, crude fiber 1.0% max (as-fed basis)
Caloric Content: ~379 kcal per 13 oz can
Price Range: $3.80-5.20 per 13 oz can (case of 12: $42-58)
Best For: Picky eaters, dogs needing increased moisture intake, IBD dogs with vomiting
AAFCO Statement: Adult maintenance
Key Feature: Higher moisture content aids hydration; palatability often better than dry hydrolyzed diets
5. Purina Pro Plan Veterinary Diets HA Hypoallergenic (Dry)
Protein Source: Hydrolyzed soy protein (single-source, low-molecular-weight)
Guaranteed Analysis: Crude protein 19% min, crude fat 14% min, crude fiber 4.5% max
Caloric Content: ~3,568 kcal/kg (~362 kcal/cup)
Price Range: $40-52 for an 11 lb bag; $78-98 for a 24 lb bag
Best For: Elimination trials, long-term allergy management
AAFCO Statement: All life stages including growth of large-size dogs (70+ lb adult weight)
Key Feature: One of the few hydrolyzed diets approved for puppies and all life stages; uses a carbohydrate source (corn starch) that is not a common allergen
6. Purina Pro Plan Veterinary Diets HA Hypoallergenic (Wet)
Protein Source: Hydrolyzed soy protein
Guaranteed Analysis: Crude protein 6% min, crude fat 4% min, crude fiber 2% max (as-fed)
Caloric Content: ~355 kcal per 13 oz can
Price Range: $3.50-4.80 per 13 oz can
Best For: Puppies needing hydrolyzed diet, dogs transitioning between dry and wet
AAFCO Statement: All life stages including growth
Key Feature: Growth-approved wet formula — rare combination in the hydrolyzed market
7. Royal Canin Veterinary Diet Anallergenic (Dry)
Protein Source: Feather meal hydrolyzed to amino acid level (oligopeptides <1 kDa)
Guaranteed Analysis: Crude protein 18% min, crude fat 14% min, crude fiber 7% max
Caloric Content: ~3,362 kcal/kg (~290 kcal/cup)
Price Range: $55-72 for a 12 lb bag (premium tier)
Best For: Dogs that failed standard hydrolyzed diets; severe refractory food allergies
AAFCO Statement: Adult maintenance
Key Feature: The most extensively broken-down protein available commercially; uses feather protein hydrolyzed to free amino acids and di/tripeptides — the "last resort" hydrolyzed diet
How Much Hydrolyzed Dog Food Should You Feed?
Feeding amounts on the bag are starting points, not prescriptions. Your dog's actual caloric requirement depends on their resting energy requirement (RER) multiplied by a life-stage and activity factor. Here's how to calculate it:
Step 1: Calculate RER = 70 × (body weight in kg)^0.75
Step 2: Multiply by the appropriate factor:
| Dog Profile | Multiplier | Example: 50 lb (22.7 kg) Dog |
|---|---|---|
| Neutered/spayed adult, normal activity | 1.6 × RER | RER = 732 kcal → 1,171 kcal/day |
| Intact adult, normal activity | 1.8 × RER | RER = 732 kcal → 1,318 kcal/day |
| Senior / low activity / prone to obesity | 1.2-1.4 × RER | RER = 732 kcal → 878-1,025 kcal/day |
| Weight loss (overweight dog) | 1.0 × RER (based on ideal weight) | If ideal = 42 lb (19 kg): RER = 637 kcal → 637 kcal/day |
| Puppy (2-6 months) | 3.0 × RER | Varies by current weight; recalculate monthly |
| Puppy (6-12 months) | 2.0 × RER | Varies by current weight; recalculate monthly |
Practical conversion to cups: Divide daily kcal by the kcal/cup listed on your specific bag. For example, if your 50 lb neutered dog needs 1,171 kcal/day and you're feeding Royal Canin HP (306 kcal/cup): 1,171 ÷ 306 = ~3.8 cups per day, split into two meals.
Adjustment factors to monitor:
- If your dog's body condition score (BCS) is increasing over 2-3 weeks, reduce by 10%
- If your dog has high metabolism (e.g., working breeds, terriers), you may need to increase by 10-20%
- Dogs with IBD may have malabsorption — your vet may recommend 10-15% more calories to compensate
- Treats must also be hydrolyzed-compatible (see "Foods to Avoid" below) and count toward total daily calories — keep treats under 10% of daily intake
How to Transition Your Dog to Hydrolyzed Food
Transitioning to a hydrolyzed diet requires more care than switching between regular foods. If you're doing a diagnostic elimination trial, your vet may recommend an immediate switch rather than a gradual transition to avoid prolonged exposure to the old diet. For long-term management transitions, follow this protocol:
7-10 Day Transition Protocol
| Days | Old Food | New Hydrolyzed Food | What to Watch For |
|---|---|---|---|
| Days 1-2 | 75% | 25% | Acceptance, initial stool changes |
| Days 3-4 | 50% | 50% | Stool consistency, appetite level |
| Days 5-6 | 25% | 75% | Any vomiting, flatulence changes |
| Days 7-10 | 0% | 100% | Full adjustment, monitor BCS and energy |
Elimination trial exception: Your vet may instruct an immediate 100% switch to the hydrolyzed diet to begin the trial clock. This can cause temporary loose stools for 2-4 days — this is normal and typically resolves as the gut adapts.
What Ingredients and Foods to Avoid on a Hydrolyzed Diet
This section is critical. The single biggest reason hydrolyzed diet trials fail is accidental exposure to intact proteins. During an elimination trial — and ideally during long-term management — the following must be strictly avoided:
Strict Avoid List
- All flavored medications and treats: Beef-flavored chewable preventives (many heartworm and flea/tick medications come in flavored chews), dental treats, rawhides, bully sticks, pig ears — all contain intact proteins that can trigger reactions. Ask your vet for unflavored alternatives (e.g., topical flea preventives, unflavored tablet forms).
- Table scraps and human food: Even a small piece of cheese or chicken can sabotage an elimination trial. One study found that 40% of failed elimination trials were attributed to accidental dietary indiscretion.
- Other pets' food: If you have a cat or another dog eating regular food, feed separately and clean bowls between meals. Cross-contamination is a real concern.
- Flavored toothpaste: Many enzymatic dog toothpastes come in poultry or beef flavor. Switch to an unflavored or veterinary-recommended alternative during the trial.
- Supplements with intact protein: Some joint supplements contain gelatin, chicken liver flavor, or bovine cartilage. Verify every supplement with your vet.
- "Limited ingredient" or "grain-free" over-the-counter foods: These are NOT equivalent to hydrolyzed diets. A 2018 study published in the Journal of the American Veterinary Medical Association found that many OTC limited-ingredient diets contained undeclared protein sources due to manufacturing cross-contamination.
Ingredients to Check on Any Food Label
When evaluating whether a food is truly appropriate, check the label for:
- AAFCO nutritional adequacy statement: Must say "complete and balanced" for the appropriate life stage. Look for language like "Animal feeding tests using AAFCO procedures substantiate..." which indicates the food was actually feeding-trial tested, not just formulated to meet nutrient profiles.
- Ingredient order: On hydrolyzed diets, the first ingredient should be the hydrolyzed protein source (e.g., "hydrolyzed soy protein" or "hydrolyzed chicken"). Carbohydrate sources should be single-source and non-common allergens (corn starch, rice, or potato).
- No "natural flavors" or unspecified protein sources: Vague terms like "animal digest" or "natural flavor" on non-prescription foods can hide intact proteins.
Can You Feed a Homemade Hydrolyzed Diet?
The short answer: homemade diets cannot truly replicate hydrolyzed protein diets. Hydrolysis requires industrial enzymatic processing that breaks proteins to the molecular level — this isn't achievable in a home kitchen.
However, if your dog has confirmed food allergies and you want to feed a homemade diet using novel proteins (not hydrolyzed), this is possible with significant caveats:
- Must be formulated by a board-certified veterinary nutritionist (DACVN or equivalent). A general-practice veterinarian typically does not have the specialized training to formulate complete homemade diets. You can find one through the American College of Veterinary Nutrition.
- Nutritional completeness is a serious concern: Studies have shown that over 90% of homemade dog food recipes found online are nutritionally deficient in at least one essential nutrient. A veterinary nutritionist will provide a recipe with specific gram measurements, supplement requirements, and periodic blood work monitoring.
- Cost and time commitment: Expect to spend $150-350 for an initial consultation and recipe formulation, plus ongoing costs for specific ingredients and supplements. Preparation time is typically 2-3 hours per week for batch cooking.
- Raw diets are not recommended for dogs with GI conditions or compromised immune systems. The AVMA discourages feeding raw animal-source proteins due to risks of Salmonella, Listeria, Campylobacter, and E. coli contamination — risks that are heightened in dogs with existing GI inflammation.
Supplement Guidance for Dogs on Hydrolyzed Diets
Most veterinary-formulated hydrolyzed diets are nutritionally complete, meaning additional supplements are usually unnecessary and can sometimes be counterproductive. However, certain supplements may be recommended by your vet for specific conditions:
| Supplement | When It May Be Recommended | Typical Dosage | Notes |
|---|---|---|---|
| Omega-3 Fish Oil (EPA/DHA) | Dogs with severe dermatologic signs not fully controlled by diet alone | 20-55 mg combined EPA+DHA per kg body weight daily | Many hydrolyzed diets already contain added omega-3s; check label before supplementing to avoid excess (can cause GI upset or bleeding risk at very high doses) |
| Probiotics (e.g., Enterococcus faecium, Lactobacillus spp.) | IBD dogs, dogs with antibiotic-associated diarrhea, post-flare recovery | 1-10 billion CFU/day depending on product | Choose veterinary-specific formulations; human probiotics may contain dairy or other allergens |
| Vitamin B12 (Cobalamin) | Dogs with chronic IBD and documented B12 deficiency (serum test required) | Per vet prescription — typically subcutaneous injections weekly for 6 weeks | IBD damages the ileum where B12 is absorbed; oral supplementation is often ineffective |
| Psyllium Fiber | Dogs with soft stools or IBD needing soluble fiber support | 1 tsp per 10 lb body weight, mixed into food, once to twice daily | Start at half dose and increase gradually; ensure adequate water intake |
Important: Always verify with your veterinarian that any supplement is free of intact protein sources (flavorings, gelatin capsules, etc.) before adding it to a hydrolyzed diet regimen.
Monitoring Success: How to Know the Diet Is Working
After switching to a hydrolyzed diet, you should track specific markers to evaluate whether the diet is effective. Here's what to monitor and expected timelines:
Gastrointestinal Response
Timeline: 2-4 weeks for noticeable improvement
- Stool quality: Should move toward formed, consistent stools (score 2-3 on the Purina Fecal Scoring System)
- Bowel movement frequency: Should normalize (typically 1-3 per day)
- Vomiting: Should decrease significantly or resolve
- Flatulence: Often improves within 1-2 weeks
Dermatologic Response
Timeline: 4-8 weeks for initial improvement; up to 12 weeks for full response
- Itching frequency and intensity: Keep a daily log (scale of 1-10)
- Ear infections: Should decrease in frequency and severity
- Coat quality: Improved shine, reduced flaking, less hair loss
- Hot spots and skin lesions: Should begin healing once scratching decreases
Body Condition Score (BCS)
Assess every 2-4 weeks
- Ideal BCS is 4-5 on a 9-point scale: ribs easily felt but not visible, waist visible from above, abdominal tuck visible from side
- Weight should remain stable unless intentional weight loss is planned
- Muscle condition: Palpate spine, hip bones, and shoulders — muscle should cover bones, not just fat
Energy and Overall Vitality
Timeline: 2-6 weeks
- Energy levels should stabilize or improve (especially in IBD dogs who were malabsorbing nutrients)
- Appetite should be consistent — hydrolyzed diets can be less palatable initially, but most dogs adapt within 1-2 weeks
- If your dog refuses the diet after 3-4 days, consult your vet about alternative hydrolyzed options or wet food formats
When to contact your vet during monitoring:
- No improvement in GI signs after 4 weeks on the diet
- No improvement in skin signs after 8-12 weeks of strict feeding
- Weight loss exceeding 2% of body weight per week (unless intentional)
- New symptoms developing (lethargy, vomiting, refusal to eat for more than 24 hours)
- Stool consistently watery or containing blood after the initial transition period
Frequently Asked Questions About Hydrolyzed Dog Food
Is hydrolyzed dog food safe for long-term feeding?
Yes. Veterinary-formulated hydrolyzed diets are nutritionally complete and balanced for long-term feeding. Many dogs with confirmed food allergies eat hydrolyzed diets for their entire lives without nutritional deficiencies. The proteins, while broken into smaller peptides, still provide all essential amino acids your dog needs.
Why is hydrolyzed dog food so expensive?
Hydrolyzed diets cost $3-6 per pound of dry food, compared to $1-3 per pound for premium non-prescription kibble. The higher cost reflects the specialized enzymatic hydrolysis process, quality control measures to prevent cross-contamination with intact proteins, extensive feeding trials, and the relatively small market volume compared to mainstream dog foods. Budget $80-150 per month for a medium-sized (40-50 lb) dog.
Do I need a prescription to buy hydrolyzed dog food?
Yes, in the United States, therapeutic hydrolyzed diets from Royal Canin, Hill's, and Purina require a veterinary prescription. This ensures the diet is appropriate for your dog's specific condition and that your vet is monitoring the treatment. You can fill prescriptions through your vet's office, authorized online pharmacies (Chewy's prescription service, VetRxDirect), or veterinary hospital pharmacies.
Can I give my dog treats while on a hydrolyzed diet?
Only if the treats are compatible with the elimination protocol. Royal Canin makes Hydrolyzed Protein treats, and Hill's makes z/d treats — both are formulated with the same hydrolyzed proteins as their respective diets. During a strict elimination trial, even these should be limited to under 10% of daily caloric intake. Never give flavored dental chews, rawhides, or any treat containing intact protein during a trial.
My dog won't eat the hydrolyzed food — what should I do?
Palatability is a common challenge with hydrolyzed diets. Try these steps: (1) Warm the food slightly (add warm water to dry kibble, or warm canned food to body temperature). (2) Try the wet/canned version of the same diet, which most dogs find more palatable. (3) Ask your vet about switching to a different brand's hydrolyzed formula — the flavor profiles differ between soy-based (Royal Canin, Purina) and chicken-hydrolysate-based (Hill's) diets. (4) Never add broth, cheese, or other flavorings, as these contain intact proteins.
How long does an elimination trial last?
A standard elimination trial using a hydrolyzed diet lasts 8-12 weeks for dermatologic signs and 2-4 weeks for GI signs. During this time, the dog must eat ONLY the hydrolyzed diet and approved treats/medications. If symptoms resolve, your vet will typically recommend a "challenge" — reintroducing the original diet to confirm the diagnosis. If symptoms return within 1-2 weeks of the challenge, food allergy is confirmed.
Does my dog need supplements on a hydrolyzed diet?
Most dogs do not need additional supplements on a complete and balanced hydrolyzed diet. In fact, adding unverified supplements can introduce intact proteins and undermine the diet's purpose. Exceptions include omega-3 supplementation for severe skin cases and probiotics for IBD — but only under veterinary guidance with products verified to be free of common allergens.
Can hydrolyzed dog food cause side effects?
Side effects are uncommon but can include: loose stools during the first 1-2 weeks (usually self-resolving), decreased appetite due to palatability differences, and very rarely, a paradoxical allergic response (some dogs react to trace peptides even after hydrolysis — this is why Royal Canin's Anallergenic formula exists as an even more extensively hydrolyzed option). If your dog experiences persistent vomiting, severe diarrhea, or lethargy after switching, contact your veterinarian promptly.
Key Takeaways
- Hydrolyzed dog food breaks proteins below the immune system's detection threshold, making it the gold standard for food allergy diagnosis and management.
- These diets require a veterinary prescription and should be part of a structured elimination trial or long-term management plan.
- The most common trial failure cause is accidental exposure to intact proteins through treats, flavored medications, or table scraps.
- Expect to spend $80-150/month for a medium-sized dog; GI improvement typically appears in 2-4 weeks, skin improvement in 4-12 weeks.
- Homemade diets cannot replicate hydrolysis — work with a veterinary nutritionist if you want to pursue a novel-protein homemade alternative.
Tom Renshaw
All our authors care for dogs every day — read more of their work on the authors page.
