GrassSaver Wafers Supplement
Verified Jul 19, 2026
This is a chewable supplement for dogs designed to support urinary tract function and help reduce lawn spotting from urine. It uses dl-methionine to influence urine characteristics, along with cranberry, yucca, B vitamins, enzymes, fiber, and a probiotic. It’s intended for dogs over 12 weeks of age and is not safe for cats.
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Strong Choice
This is a functional supplement rather than a complete diet, aimed at dogs whose urine is causing lawn spots and whose owners also want some urinary tract support. It combines dl-methionine, cranberry, yucca, B vitamins, fiber, enzymes, and a probiotic, which is a thoughtful blend for urinary and digestive support. I would use it cautiously in dogs with any history of urinary stones or kidney issues and only under veterinary guidance.
Computed from 3 of 3 applicable checks. Missing data is skipped, never counted against a food.
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At a Glance
Where these benefits come from
Benefits the manufacturer highlights in its own product marketing. KibbleLab lists them for reference and does not verify these claims.KibbleLab Review
Strengths
- Includes dl-methionine, which can acidify urine and may help reduce lawn burn in appropriate dogs.
- Cranberry and a vitamin B blend add some support for urinary tract health and general metabolism.
- Contains yucca, fiber, enzymes, and a probiotic, which may gently support digestion and stool quality.
- Clear, weight-based dosing makes it easier to give an appropriate amount for your dog’s size.
Considerations
- Dl-methionine alters urine characteristics, so dogs with a history of urinary stones, kidney disease, or on urinary diets should only use this under veterinary advice.
- This is a supplement, not a complete food, so it should be used alongside a balanced diet, not instead of one.
- Contains dairy-derived ingredients like dried whey and non-fat dry milk, which will not suit dogs with dairy allergies or intolerances.
- Any supplement that aims to change urine traits should be discussed with your vet, especially for breeds prone to urinary issues.
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
DL-Methionine
DL‑methionine is a synthetic, racemic form of the essential sulfur‑containing amino acid commonly added to dog and cat foods to meet methionine requirements for protein synthesis, support skin and coat health, and to acidify urine when clinically indicated to help prevent struvite crystals. Only the L‑isomer is directly used by the body (the D‑isomer is converted), and while it can be a precursor to cysteine and indirectly to taurine, it does not replace dietary taurine for cats; excessive supplementation can upset amino acid balance or over‑acidify urine, so it should be used at recommended levels.
02
Cranberry Fiber
Cranberry fiber is a fiber-rich ingredient derived from cranberry pomace used in pet foods to provide soluble and insoluble fiber for digestive health and improved stool quality, while also contributing antioxidant polyphenols. In dogs and cats it can help regulate intestinal transit and fecal bulk and may supply cranberry compounds sometimes associated with urinary tract support, but evidence is limited and high inclusion levels can reduce calorie density, affect palatability, or cause loose stools, so it should not replace veterinary treatment when needed.
03
Nutrient Blend
A “Nutrient Blend” in pet food typically refers to a vitamin and mineral premix added to ensure the diet meets essential micronutrient requirements and helps make the product complete and balanced for dogs and/or cats. These blends support growth, immune function, skin/coat and bone health, but formulations vary — quality and correct dosing matter because imbalances or excesses of some vitamins or minerals can be harmful, so choose foods formulated to recognized standards (e.g., AAFCO/NRC).
04
Biotin
Biotin (vitamin B7) is a water‑soluble vitamin added to pet foods as a micronutrient to support energy metabolism and healthy skin, coat, and paw pad integrity in dogs and cats. Deficiencies are uncommon with commercial diets but supplementation can help with dermatitis or poor coat quality—biotin is generally safe at recommended levels, though therapeutic or high‑dose use should be done under veterinary guidance and raw egg whites can interfere with biotin absorption.
05
Vitamin B12
Vitamin B12 (cobalamin) is an essential water‑soluble vitamin commonly added to pet foods and supplements to support red blood cell production, neurological function, DNA synthesis, and normal energy metabolism in dogs and cats. It helps prevent deficiency signs such as anemia, poor appetite, weight loss and neurologic abnormalities, and is particularly important in diets low in animal ingredients or in pets with gastrointestinal malabsorption—generally safe because excess is excreted, though animals with GI disease may need higher or parenteral dosing under veterinary guidance.
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.
Manufacturer
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
No recall is listed for NaturVet GrassSaver Wafers Supplement.
Source: FDA animal food recall listings back to January 2019 · Checked daily, last on Aug 31, 2026
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Frequently Asked Questions
Has NaturVet ever been recalled?
We have no recalls on record for NaturVet. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
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 listings. Last verified dates reflect our most recent data check. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
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