When a dog struggles with anxiety, it is understandable to look for a gentle, nonprescription way to help. Pet owners frequently ask veterinarians about calming chews, L-theanine, milk-derived proteins, pheromones, CBD, herbal products, and other supplements marketed for anxious dogs.
Some of these options may be useful for selected dogs. Others have limited evidence, inconsistent formulations, or potential medication interactions that are easy to overlook.
Most importantly, “natural” does not automatically mean safer or more effective. Supplements should not replace an appropriate veterinary evaluation, behavior modification, environmental management, or prescription treatment when those are needed.
At Desert Forest Animal Hospital in Cave Creek, we take an individualized approach to canine fear and anxiety. Dr. Quinn Bauer, DVM is a Fear Free Certified veterinarian, and our team considers both physical health and emotional well-being when developing a plan for an anxious dog.
Is Anxiety Affecting Your Dog’s Quality of Life?
Talk with your veterinarian if your dog is struggling with thunderstorms, separation, veterinary visits, travel, unfamiliar people, grooming, handling, or persistent fear at home.
Desert Forest Animal Hospital
6554 E Cave Creek Road
Cave Creek, AZ 85331
(480) 488-2010
What Does Anxiety Look Like in Dogs?
Anxiety does not always look like a dog hiding under the bed. Some dogs show subtle signs of fear, anxiety, or stress long before their distress becomes obvious.
Possible signs include:
- Panting when the dog is not hot
- Pacing or inability to settle
- Trembling or shaking
- Whining or excessive vocalization
- Drooling
- Lip licking or repeated yawning
- Hiding
- Trying to escape
- Destructive behavior
- Refusing treats in situations where the dog normally eats
- Urinating or defecating when frightened
- Becoming unusually clingy
- Freezing or becoming very still
- Growling, snapping, or other defensive behavior
The AAHA behavior-management guidelines describe many of these signs as indicators of anxiety or distress in dogs and cats.
A fearful dog is not necessarily being stubborn or disobedient. Behavior communicates information about the dog’s emotional state.
The American Veterinary Society of Animal Behavior recommends reward-based training methods for canine training and behavior modification and advises against aversive methods that rely on fear, pain, or intimidation.
Before Choosing a Supplement, Ask Why Your Dog Is Anxious
One of the most important steps in treating anxiety is identifying the problem we are actually trying to solve.
A dog may be experiencing:
- Noise sensitivity or thunderstorm fear
- Separation-related distress
- Fear of strangers
- Fear of other dogs
- Travel anxiety
- Fear associated with veterinary care
- Handling or grooming sensitivity
- Generalized anxiety
- Age-related behavioral change
- Pain or another medical condition affecting behavior
A sudden change in behavior deserves particular attention. Pain, neurologic disease, endocrine disease, sensory changes, cognitive decline, and other medical problems can sometimes initially appear as restlessness, irritability, fearfulness, altered sleep, or changes in social behavior.
The AAHA Canine and Feline Behavior Management Guidelines emphasize evaluating medical contributors to behavioral problems rather than assuming every behavior change is purely behavioral.
Do Calming Supplements for Dogs Actually Work?
The most accurate answer is: some products may help some dogs, but the quality of evidence varies considerably by ingredient and product.
A calming supplement is generally best viewed as one possible component of a broader treatment plan rather than a cure for anxiety.
Depending on the individual dog, an effective plan may include:
- Identifying and reducing avoidable triggers
- Reward-based behavior modification
- Desensitization and counterconditioning
- Environmental changes
- Appropriate exercise and predictable routines
- Enrichment
- Fear Free veterinary handling
- Selected calming supplements or pheromones
- Pre-event medication
- Daily prescription behavioral medication
- Referral to a board-certified veterinary behaviorist when appropriate
The goal is not simply to make a dog appear quieter. The goal is to reduce distress and help the dog feel and function better.
1. Alpha-Casozepine
Alpha-casozepine is a peptide derived from casein, a milk protein. It is included in some veterinary calming products marketed for situational stress and ongoing behavioral support.
There is some veterinary research involving alpha-casozepine, but the evidence should be interpreted cautiously. Studies differ in product formulation, study population, stressor, and outcome measured.
A 2025 controlled crossover study published in Frontiers in Veterinary Science evaluated treats containing CBD at different doses and a combination containing CBD, L-tryptophan, and alpha-casozepine in 54 dogs exposed to a short car-travel stress test.
The combination produced a smaller cortisol increase than placebo, but most other measured outcomes were not significantly different. The authors characterized the effect as mild and recommended further study.
Importantly, because several active ingredients were combined in that treatment, the study does not establish that alpha-casozepine alone produced the observed effect.
Alpha-casozepine may be reasonable to discuss with your veterinarian as an adjunct for selected dogs, particularly when symptoms are mild or situational, but expectations should remain realistic.
2. L-Theanine
L-theanine is an amino acid naturally found in tea and is included in several veterinary calming products.
It has been investigated for potential effects on stress and emotional behavior, but veterinary evidence remains more limited than the evidence available for established behavioral medications.
For some dogs with mild or situational anxiety, a veterinarian may consider an appropriately formulated veterinary product as one component of a broader management plan.
Product selection matters because the amount of active ingredient, additional ingredients, manufacturing standards, and quality control can differ substantially among over-the-counter products.
3. Dog-Appeasing Pheromones
Pheromone products are not nutritional supplements, but they are frequently grouped with nonprescription calming options.
Dog-appeasing pheromone products are designed to mimic chemical signals associated with maternal or social reassurance and are available as diffusers, sprays, and collars.
Some controlled studies have reported improvement in selected fear- or stress-associated behaviors, while results vary between dogs and clinical situations.
Pheromones are relatively easy to incorporate into a broader behavior plan and have the advantage of not requiring oral administration, but they should not be expected to resolve severe anxiety by themselves.
4. What About CBD for Dog Anxiety?
CBD is one of the most common products pet owners ask about when looking for nonprescription approaches to anxiety.
Research into cannabidiol use in dogs continues, but CBD should not be treated as a proven or automatically safe treatment for canine anxiety.
The U.S. Food and Drug Administration states that cannabis has not been approved for any use in animals and that the agency cannot ensure the safety or effectiveness of cannabis products marketed for pets.
Reasons for caution include:
- CBD concentration may differ from the amount stated on the label
- Products may contain additional cannabinoids or contaminants
- CBD may affect drug metabolism
- Adverse effects can occur
- Dogs may accidentally consume human cannabis products containing THC
- Research specifically addressing clinical canine anxiety remains limited
Do not simply increase a CBD product until your dog appears calmer.
If you currently give CBD or are considering it, tell your veterinarian the exact product, concentration, amount, and frequency. This is especially important if your dog takes prescription medication or has liver disease or another chronic medical condition.
What If My Dog Eats Marijuana or a THC Edible?
Accidental cannabis ingestion is different from intentionally giving a pet a supplement.
The FDA identifies signs of cannabis exposure in pets that may include lethargy, depression, heavy drooling, vomiting, agitation, tremors, and convulsions.
If your dog accidentally consumes marijuana, a THC-containing edible, or another cannabis product and becomes lethargic, unsteady, unusually agitated, tremorous, vomits, or otherwise appears ill, contact a veterinarian promptly.
During regular hospital hours, call Desert Forest Animal Hospital at (480) 488-2010 before coming in. Our team can discuss the exposure, the symptoms you are seeing, and whether evaluation at our hospital or immediate treatment at a 24-hour emergency facility is the more appropriate next step.
Collapse, severe neurologic abnormalities, difficulty breathing, seizures, profound weakness, or another rapidly worsening reaction should be treated as an emergency.
Learn more about urgent veterinary care at Desert Forest Animal Hospital →
5. What About Valerian Root and Herbal Calming Products?
Valerian and various herbal combinations are marketed for canine anxiety, but high-quality veterinary evidence supporting many of these products is limited.
Plant-derived products can still produce side effects or interact with medications.
For that reason, we do not recommend choosing or combining herbal sedatives solely on the basis of labels such as “natural” or “veterinarian recommended.”
Bring the product label—or a photograph of the front label and complete ingredient panel—to your veterinary appointment so the veterinarian can evaluate the actual formulation.
Can I Combine Several Calming Supplements?
Do not assume that using several calming products simultaneously will produce a better result.
Combining products can:
- Duplicate active ingredients
- Increase the total amount of an ingredient beyond what you intended
- Increase sedation or gastrointestinal side effects
- Create potential interactions with prescription medications
- Make it difficult to determine which product is helping
If a supplement is reasonable for your dog, introducing one change at a time may make it easier to evaluate response and tolerability.
Keep a simple record of your dog’s triggers, behavior, supplement or medication use, and response. Patterns documented over time can be much more useful than relying on memory alone.
Prescription Anxiety Medication Is Not a Failure
One persistent misconception is that prescription medication should only be considered after every nonprescription option has failed.
That is not how evidence-based veterinary behavioral medicine approaches significant anxiety.
For a dog experiencing substantial fear, panic, separation distress, or chronic anxiety, medication may reduce the intensity of the emotional response enough for the dog to engage more successfully in behavior modification and normal daily activities.
AVSAB’s current humane-training position specifically notes that serious behavior concerns such as fear, anxiety, and aggression may require a plan combining environmental management, behavior modification, and medication when appropriate.
Medication may be prescribed:
- For predictable stressful events
- Before veterinary visits
- For thunderstorms or fireworks
- For travel
- As daily therapy for chronic anxiety
- Alongside structured behavior modification
The medication selected depends on the individual dog, medical history, type and severity of anxiety, frequency of triggers, other medications, and treatment goals.
Behavior Modification Still Matters
Supplements and medications may change how intensely a dog responds to a stressful situation, but they do not automatically teach the dog that the situation is safe.
That is where behavior modification becomes important.
Two commonly used strategies are desensitization and counterconditioning.
In simplified terms:
- Desensitization introduces a trigger at a sufficiently low intensity that the dog can remain relatively comfortable.
- Counterconditioning pairs that trigger with something the dog values, helping establish a different emotional association over time.
The process should proceed gradually. Overwhelming a frightened dog with a full-intensity exposure may worsen fear rather than resolve it.
The American Veterinary Society of Animal Behavior’s current humane-training guidance recommends reward-based methods for both training and treatment of behavior problems.
When Should My Dog See a Veterinary Behaviorist?
Some anxiety problems can be managed effectively through the dog’s primary-care veterinarian working with the family and an appropriately qualified reward-based trainer.
Referral to a board-certified veterinary behaviorist may be particularly helpful when:
- Anxiety or panic is severe
- Aggression creates a safety concern
- Separation-related distress is significant
- Multiple behavioral disorders occur together
- The dog has not improved despite an appropriate treatment plan
- Medication management is complicated
- A medical and behavioral problem may be interacting
A board-certified veterinary behaviorist is a veterinarian with advanced specialty training in behavioral medicine and can diagnose behavioral disorders and prescribe medication when indicated.
The American College of Veterinary Behaviorists directory can help families locate a Diplomate when specialty behavioral care is appropriate.
Fear Free Veterinary Care for Anxious Dogs
Some dogs experience their most intense anxiety at the veterinary hospital.
Dr. Quinn Bauer is a Fear Free Certified veterinarian at Desert Forest Animal Hospital with a particular interest in helping nervous, sensitive, and previously fearful patients receive necessary medical care.
A lower-stress veterinary visit may involve:
- Allowing acclimation time when medically appropriate
- Using high-value treats when appropriate
- Reducing unnecessary restraint
- Using non-slip surfaces
- Adjusting positioning during the examination
- Changing the order of procedures
- Pausing when stress is escalating and it is medically safe to do so
- Prescribing pre-visit medication for selected patients
Fear Free care does not mean every dog will experience zero stress or that medically necessary procedures should always be delayed. It means emotional welfare is considered alongside physical health while the team uses the least stressful safe approach available.
Learn more about Fear Free veterinary care at Desert Forest Animal Hospital →
When Should an Anxious Dog See a Veterinarian?
Schedule an evaluation if anxiety:
- Is new or suddenly worsening
- Interferes with normal eating, sleeping, or activity
- Causes panic
- Results in escape attempts or self-injury
- Causes destructive behavior
- Occurs when your dog is left alone
- Is associated with aggression
- Prevents routine veterinary care or grooming
- Is reducing your dog’s quality of life
- Is becoming difficult for your family to manage safely
Older dogs with new nighttime restlessness, pacing, vocalization, house-soiling, sleep changes, or altered social behavior should also be evaluated. Pain, sensory changes, chronic disease, and age-related cognitive changes can affect behavior.
Learn more about senior dog care at Desert Forest Animal Hospital.
How We Approach Dog Anxiety at Desert Forest Animal Hospital
There is no single “best calming supplement” for every anxious dog.
When evaluating anxiety, our veterinarians may consider:
- Your dog’s age and medical history
- When the behavior began
- The situations that trigger it
- How intense the response becomes
- How quickly your dog recovers
- Previous training or behavioral treatment
- Current medications and supplements
- Possible pain or underlying illness
- Your dog’s home environment and routine
From there, we can help determine whether your dog may benefit from environmental management, reward-based behavior modification, a selected calming supplement, pheromone therapy, pre-visit medication, prescription behavioral medication, or referral for specialty behavioral care.
Choosing a Calming Supplement for Your Dog
If a supplement is appropriate, look beyond marketing terms such as “natural” or “veterinarian recommended.”
Consider:
- The actual active ingredient
- The amount of that ingredient in each dose
- Whether the product is formulated specifically for dogs
- Manufacturer quality control
- Whether canine research exists for that ingredient or product
- Possible medication interactions
- Your dog’s medical history
If your dog already receives medications or multiple supplements, bring a complete list—or photographs of the product labels—to the veterinary appointment.
Our pet nutrition counseling information also explains why supplements and nutritional products should be considered in the context of the whole patient rather than evaluated solely by marketing claims.
Dog Anxiety Care for Cave Creek, Carefree, Desert Mountain & North Scottsdale
Desert Forest Animal Hospital provides veterinary care for dogs and cats from Cave Creek, Carefree, Desert Mountain, North Scottsdale, Tatum Ranch, Terravita, Desert Hills, Anthem, and surrounding North Valley communities.
For anxious dogs, our goal is to identify whether fear or behavior changes may have a medical component, understand the situations triggering distress, and develop a realistic treatment plan that fits the individual dog and family.
Families near Carefree can also learn more about veterinary care for dogs and cats near Carefree, Arizona.
If you are new to our hospital, visit our New Client Center to learn what to expect at your first appointment.
Frequently Asked Questions About Dog Anxiety Supplements
What is the best natural supplement for dog anxiety?
There is no single supplement that is best for every dog. Ingredients such as alpha-casozepine or L-theanine and non-drug options such as dog-appeasing pheromones may be considered for selected patients, but evidence and individual response vary. Moderate or severe anxiety may require behavior modification, prescription medication, or both.
Is CBD safe for dogs with anxiety?
CBD should not automatically be considered safe because it is plant-derived. The FDA has not approved cannabis for any use in animals and states that it cannot ensure the safety or effectiveness of cannabis products marketed for pets. Discuss CBD with your veterinarian before using it, particularly if your dog takes other medications or has a chronic medical condition.
Can I give my dog several calming supplements at once?
Do not combine several products without veterinary guidance. Products may contain overlapping ingredients, increase sedation or gastrointestinal effects, or interact with prescription medications. Starting several products at once also makes it difficult to determine what is helping or causing a problem.
Are calming supplements safer than prescription anxiety medication?
Not necessarily. “Natural” does not mean risk-free. Prescription medications have known formulations, dosing ranges, expected effects, and adverse effects that veterinarians can monitor. The appropriate choice depends on the individual dog and the severity and type of anxiety.
Can supplements replace training for an anxious dog?
Usually not. Supplements may reduce stress in some dogs, but clinically meaningful anxiety is generally managed most effectively through environmental management and reward-based behavior modification, with supplements or medication added when appropriate.
Can Desert Forest Animal Hospital help with a dog who is afraid of the vet?
Yes. Dr. Quinn Bauer is a Fear Free Certified veterinarian, and our team uses lower-stress handling approaches when medically appropriate. Tell us about your dog’s previous experiences before the appointment so we can consider ways to make the visit safer and less stressful.
Does a suddenly anxious older dog need a veterinary examination?
Yes. New anxiety, pacing, altered sleep, irritability, house-soiling, or other behavior changes in an older dog may sometimes be associated with pain, sensory changes, cognitive dysfunction, neurologic disease, endocrine disease, or another medical condition. A veterinary evaluation can help determine whether an underlying medical problem should be investigated.
Trusted Canine Behavior & Supplement Resources
- American Veterinary Society of Animal Behavior — Position Statements
- AAHA — Canine and Feline Behavior Management Guidelines
- FDA — Cannabis and CBD Products, Including Animal Products
- PubMed — 2025 Study of CBD, L-Tryptophan and Alpha-Casozepine Treats in Dogs
- American College of Veterinary Behaviorists — Find a Veterinary Behaviorist
Help Your Dog Feel Safer
If anxiety is interfering with your dog’s daily life, you do not need to experiment with an entire shelf of calming products before asking for veterinary help.
Desert Forest Animal Hospital can help evaluate whether an underlying medical issue may be contributing, discuss behavior and environmental strategies, review supplements your dog is already receiving, and determine whether Fear Free handling, medication, or behavioral referral may be appropriate.
Desert Forest Animal Hospital
6554 E Cave Creek Road
Cave Creek, AZ 85331
(480) 488-2010
Medical Review & Editorial Standards
Medically reviewed by Bryan Hayter, DVM
Owner & Medical Director
Desert Forest Animal Hospital
Cave Creek, Arizona
Fear Free clinical perspective: Quinn Bauer, DVM, Fear Free Certified
Last medically reviewed: September 2026
This article was reviewed for medical accuracy and is intended to help dog owners understand commonly marketed calming supplements, the limitations of available evidence, and the role of veterinary evaluation, behavior modification, Fear Free care, prescription medication, and behavioral referral in managing canine anxiety.
Clinical recommendations are individualized according to the dog’s age, medical history, current medications and supplements, type and severity of anxiety, behavioral triggers, physical examination findings, and overall health.
Our educational content references established veterinary and regulatory resources including the American Veterinary Society of Animal Behavior (AVSAB), American Animal Hospital Association (AAHA), U.S. Food and Drug Administration (FDA), peer-reviewed veterinary research indexed by the National Library of Medicine, and the American College of Veterinary Behaviorists (ACVB).
This article provides general educational information and is not a substitute for veterinary examination, diagnosis, or individualized behavioral or medical treatment. Do not start, stop, change, or combine prescription medications or supplements without discussing them with your veterinarian. If your dog develops collapse, seizures, severe weakness, difficulty breathing, significant toxin-related signs, or another rapidly worsening condition, seek veterinary care promptly.