7 Best Cat Calming Treats, Supplements, and Other Aids, Recommended by Vets

Many cats are creatures of habit, and changes like moving, visitors, travel, or a new pet can cause stress. Cat calming treats, supplements, and other calming aids are designed to help promote calm behavior, and they work best alongside a well-rounded behavior management plan that includes behavior modification and environmental management. 

The best calming supplements for cats come from reputable brands that invest in research, contain calming ingredients with published evidence behind them, and come in a form your cat will reliably accept.  

Below, our expert panel shares their top vet-recommended picks across several categories, so you can find the one that best suits your cat’s unique needs. Be sure to talk with your vet before starting any calming aid; they can help you devise a comprehensive approach for relieving anxiety or stress in your cat. 

What To Consider When Buying Cat Calming Treats, Supplements, and Other Aids 

The best calming aids for cats come from brands that conduct product research, use a well-studied, active ingredient at a stated dose, and come in a form your cat will willingly take. Use the checkpoints below to narrow the field to the right product for your cat and the stressor you’re dealing with. 

Brand Reputation 

Choose calming supplements made by companies that fund research on their own formulas and employ veterinarians. The National Animal Supplement Council (NASC) Quality Seal on the label is another good indicator of quality. Member companies pass a third-party audit every two years and must maintain NASC standards for quality control, labeling, and adverse event reporting.  

Ingredients and Scientific Support 

Read the active-ingredient panel before you buy, and pass on anything that buries its calming ingredients in a proprietary blend with no dose listed. Look for one or more of these active ingredients: 

• L-theanine, an amino acid shown to help reduce stress-related behaviors in cats 
• Alpha-casozepine, a peptide derived from milk protein shown to help promote calm behaviors in cats, especially in socially stressful situations 
• Bifidobacterium longum BL999, a clinically studied probiotic strain that supports the gut-brain axis in cats 
• L-tryptophan, an amino acid the body uses to produce serotonin, which helps regulate mood and behavior 
• Colostrum calming complex, a milk-derived protein blend that may promote relaxation and support cognitive function 
• Omega-3 fatty acids and antioxidants, which help support a healthy stress response in cats 

Not all calming aids rely on dietary ingredients. Synthetic feline pheromones, used in sprays and diffusers, mimic cats' natural pheromones to help create a sense of familiarity and security. 

Type of Calming Aid 

When it comes to the supplement’s format, consider your cat’s tendencies. A few preferences worth considering include: 

• If your cat loves treats, start with a soft chew. 
• If your cat turns their nose up at treats, mix a powder into wet or dry food. 
• If your cat is picky about texture, try a lickable puree you can offer from the tube or a lick mat. 
• If you want a clear, measured dose, choose a capsule—most can be opened and sprinkled over food. 
• If your cat isn’t food-motivated at all, plug in a pheromone diffuser instead. 
• If your cat also has urinary issues, ask your vet about a therapeutic diet that addresses both that and the stress. 

How Fast It Works and How Long It Lasts 

Decide whether you’re addressing a one-time event or an ongoing problem, because the timelines are very different. 

For a one-time event, such as a groomer appointment or a vet visit, choose a fast-acting supplement that lasts a few hours. For ongoing or longer-term stress, such as a move or a new pet, look for a product designed for regular use, keeping in mind that some options may take several days to weeks to reach full effect. Check the label for whether the product is approved for daily use before you build it into a routine. 

Keep in mind that for pets with severe anxiety, medication in conjunction with a behavior modification plan may be the right option to help your cat.  

Vet Input 

Run your short list past your veterinarian before you buy, especially if your cat takes medication or has a health condition. Ask which format best suits your cat and whether the behavior you’re seeing warrants any lab work—a sudden change may point to an underlying medical problem.  

Note that calming aids are meant for mild to moderate stress. Cats with moderate to severe or chronic anxiety may need a full behavior plan and, in some cases, prescription cat anxiety medication.