Immunity + Longevity Dual Action Soft Chews Supplement
Verified Jun 30, 2026
A soft chew supplement for dogs over 12 weeks of age that combines milk thistle, omega-3 fatty acids, vitamins C, D, and E, zinc, selenium, and a nicotinamide (NAD+) precursor. It’s designed to complement a regular diet by supporting immune function, cellular health, and overall vitality. The soft chew format makes it easy to give as a daily treat with meals.
This is a well-thought-out canine supplement aimed at supporting immune health and cellular function, using ingredients like milk thistle, omega-3s, antioxidants, and an NAD+ precursor. It’s best viewed as an add-on to a complete and balanced dog food, not a replacement, and may suit adult dogs whose owners are interested in extra antioxidant and liver support. As with any supplement, it’s wise to check with your veterinarian, especially if your dog has existing medical conditions or takes other medications.
The KibbleLab Score (1–10) is assessed from publicly available product data. Our evaluation is science-based, not marketing-based.
KibbleLab may earn an affiliate commission when you buy through a link. No one can pay for a higher score, or to change what we recommend for your pet.
At a Glance
KibbleLab Review
Strengths
- Includes multiple antioxidant and immune-supporting nutrients, such as vitamins C, D, and E, zinc, selenium, milk thistle, and lutein.
- Provides omega-3 fatty acids from flaxseed and pollock oil, which can benefit skin, coat, and overall inflammatory balance.
- Contains a nicotinamide riboside (NAD+ precursor) aimed at supporting cellular energy and brain health, which is a more advanced functional ingredient than is typical in many supplements.
- Soft chew form with palatable ingredients like bone broth and natural flavoring can make daily dosing easier for many dogs.
Considerations
- This is a supplement, not a complete diet, so it should only be used alongside a balanced dog food, not as a primary source of nutrition.
- Fish (pollock oil) and yeast are present, which may be problematic for dogs with known sensitivities to fish or yeast-containing products.
- Vitamin D and other fat-soluble vitamins are included; if your dog is already on multiple supplements or a veterinary diet, it’s important to make sure total intake of these nutrients stays within safe limits.
- Bone broth is porcine-derived, so it’s not appropriate for dogs that must avoid pork for medical or dietary reasons.
Full Ingredient List
Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.
Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.
Top 5 Ingredients Explained
01
Milk Thistle
Milk thistle is an herbal supplement used in some pet foods and supplements for its liver-supporting and antioxidant properties, with the active component silymarin thought to help protect liver cells and support detoxification. It is a supportive, non-essential ingredient rather than a nutrient, so pet owners should consult a veterinarian before use because effectiveness can vary by product and dosage, and it may interact with medications or cause mild gastrointestinal upset or allergic reactions in some animals.
02
Pork Bone Broth
Pork bone broth is used as a flavorful palatant and hydration aid in pet foods and toppers, contributing gelatin, collagen-derived amino acids, and trace minerals that can support joint and gut health and make food more appealing to dogs and cats. Owners should note broths may be high in sodium or fat and sometimes contain toxic seasonings (e.g., onion, garlic, xylitol) or bone fragments, so choose low‑salt, properly strained products and treat broth as a supplement rather than a complete diet.
03
Total Omega-3 Fatty Acid
Total omega-3 fatty acid indicates the combined amount of omega-3 fats (commonly supplied by fish oil, algal oil, or flaxseed) added to pet food to support skin and coat health, joint function, cognitive development, and to provide anti-inflammatory benefits for dogs and cats. While beneficial, cats have limited ability to convert plant-based ALA to EPA/DHA and therefore need preformed EPA/DHA; excessive supplementation can increase bleeding risk, add calories, or introduce oxidized fats or contaminants, so sources, dose, and balance with omega-6 should be managed for safety and effectiveness.
04
Flaxseed
Flaxseed is used in pet foods as a plant-based source of alpha‑linolenic acid (ALA) omega‑3, soluble and insoluble fiber, and modest protein, often added to support skin and coat condition, digestive health, and kibble texture; ground seed or flaxseed oil is more digestible than whole seed. Dogs can partially convert ALA to long‑chain EPA/DHA but cats convert ALA poorly and therefore still need marine sources for essential DHA/EPA; flax is calorie‑dense, prone to oxidation if not stabilized, and contains lignans (phytoestrogens) and trace cyanogenic compounds, so it should be processed and used in moderation.
05
Pollock Oil
Pollock oil is used in dog and cat foods as a source of concentrated marine omega-3 fatty acids (EPA and DHA) and dietary fat, which support healthy skin and coat, joint mobility, cardiovascular function and anti‑inflammatory responses. It provides energy and essential long‑chain omega‑3s but must be sourced and stored carefully to avoid oxidation and contaminants, can cause gastrointestinal upset or reactions in pets with fish allergies, and high supplemental doses may have blood‑thinning effects or interact with certain medications.
Product Details & Brand
Product Specs
Brand
NaturVet is a leading brand of pet supplements offering a wide range of products for dogs, cats, and horses, focusing on natural health support including joint, digestive, allergy, and behavioral care. The brand targets pet owners seeking holistic, natural, and vet-formulated wellness solutions.
Visit NaturVetManufacturer
NaturVet manufactures products in-house at its Temecula, California facility that is compliant with current Good Manufacturing Practices (cGMP). The company maintains NASC (National Animal Supplement Council) certification, ensuring standardized manufacturing, ingredient safety, and product quality.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
NaturVet Immunity + Longevity Dual Action Soft Chews Supplement has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has NaturVet ever been recalled?
We have no recalls on record for NaturVet. We monitor the FDA Pet Food Recall Database daily.
How does KibbleLab rate foods?
Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.
Is KibbleLab a substitute for veterinary advice?
No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.
KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.
KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.
Product data sourced from manufacturer websites, AAFCO statements, and FDA recall database. Last verified dates reflect our most recent data check.
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