Aller-911 Calming Aid Plus Chewable Tablets Supplement
Verified Aug 18, 2026
This is a chewable calming and allergy-support supplement for dogs that combines white willow bark, melatonin, L-tryptophan, B vitamins, vitamin C, and colostrum. It’s designed to help ease stress and discomfort related to seasonal allergies while also offering some immune support. The tablet form makes it easier to give as a daily add-on alongside your dog’s regular complete diet.
Jump to ingredientsAffiliate link · may earn a commission at no extra cost to you
Solid Option
This is a thoughtfully formulated calming and allergy-support supplement for dogs, using a mix of botanicals, amino acids, vitamins, and colostrum. It’s best suited as an adjunct to a balanced dog diet for pets dealing with mild stress or discomfort around allergy season. As with any supplement, it should be used under your veterinarian’s guidance, especially if your dog is on other medications or has chronic health issues.
Computed from 3 of 3 applicable checks. Missing data is skipped, never counted against a food.
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
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
- Contains multiple calming ingredients (melatonin, L-tryptophan, thiamine) that are commonly used to support relaxation in dogs.
- Includes white willow bark to help with discomfort and inflammation, as well as vitamin C and colostrum for added immune support.
- Chewable tablet format with flavoring can make daily dosing more practical for many dogs.
- Formulated specifically for dogs with clear dosing ranges by body weight.
Considerations
- This is a supplement, not a complete diet, so it should only be used in addition to a balanced dog food, not as a primary nutrition source.
- White willow bark has aspirin-like properties; it may not be appropriate for dogs with bleeding disorders, stomach ulcers, kidney disease, or those on certain medications—veterinary guidance is important.
- Colostrum and other components are derived from bovine sources, so dogs with beef or dairy sensitivities may not tolerate this well.
- Melatonin and L-tryptophan can cause drowsiness in some dogs, so monitoring your dog’s response, especially at the higher end of the dose range, is important.
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
White Willow Bark
White willow bark is an herbal ingredient sometimes included in pet supplements or treats for its salicin-derived analgesic and anti-inflammatory properties to help support joint comfort, though it does not provide macronutrients like protein or fiber. Because salicylates act similarly to aspirin, it can cause gastrointestinal upset, bleeding risks, and potential toxicity—particularly in cats, young or pregnant animals, or pets taking NSAIDs or blood thinners—so consult your veterinarian before use.
02
Ascorbic Acid
Ascorbic acid is the chemical form of vitamin C commonly used in pet foods as an antioxidant and preservative to protect fats, flavors, and other vitamins from oxidation and sometimes included as a supplemental source of vitamin C. Dogs and cats generally synthesize vitamin C endogenously so it is not essential in most diets, but added ascorbic acid can support immune function and wound healing and help stabilize the product; large supplemental doses can cause gastrointestinal upset or increase urinary oxalate in susceptible animals, so extra supplementation should be guided by a veterinarian.
03
Thiamine Mononitrate
Thiamine mononitrate is a stable, water‑soluble supplemental form of vitamin B1 commonly added to dog and cat foods to support carbohydrate metabolism and normal nervous system function. It prevents thiamine deficiency—which can cause anorexia, vomiting, and neurologic signs—and is generally safe at recommended levels, though thiamine can be degraded by some processing or inactivated by thiaminase-containing ingredients (e.g., certain raw fish) if diets are not properly formulated.
04
Colostrum
Colostrum is the antibody‑rich first milk from mammals used in pet foods and supplements to provide immune support and gut‑health benefits through concentrated proteins, immunoglobulins, growth factors and other bioactive compounds. It may aid neonatal passive immunity, intestinal barrier function and recovery during illness or stress in dogs and cats, but efficacy depends on source and processing, and it can cause digestive upset or allergic reactions in animals with dairy sensitivity and should not replace proper neonatal care or vaccinations.
05
L-Tryptophan
L‑Tryptophan is an essential amino acid used in pet foods to meet amino acid needs and, when supplemented, to support production of neurotransmitters such as serotonin and melatonin. It is important for protein synthesis and may help with mood, sleep, or mild anxiety in some dogs and cats, but supplemental doses should be used under veterinary guidance since diet usually supplies adequate amounts and improperly manufactured supplements have on rare occasions caused adverse effects.
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 Aller-911 Calming Aid Plus Chewable Tablets Supplement.
Source: FDA animal food recall listings back to January 2019 · Checked daily, last on Aug 31, 2026
Sign up for the full picture
Ingredient Check
We'll check every ingredient against your pet's profile.
Feeding Calculator
Personalized portion sizes based on your pet's weight, age, and activity level.
Side-by-Side Comparison
Compare this food with alternatives to find the best fit.
Similar Foods
Post your dog's report card and challenge friends to check their food.
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.
Continue with Google
Continue with Facebook