Best calming chews for dogs
For most dogs, Greenies Calming Chews: 2 chews give a 50 lb dog 220 mg of L-theanine a day, more than the 100 mg dog studies used, for $0.85 a day, with the NASC seal. For sleep and fireworks nights, Freeice Organic Calming Chews (Duck) give 6 mg of melatonin for $0.22 a day.
Best for most dogs
Greenies Calming Chews
220 mg L-theanine a day for a 50 lb dog (2 chews)$0.85 a day1NASC seal
Best for sleep and fireworks nights
Freeice Organic Calming Chews (Duck)
6 mg melatonin a day for a 50 lb dog (3 chews)$0.22 a day3
Best L-theanine + melatonin in one chew
Native Pet Calm Air-Dried Chews
100 mg L-theanine + 10 mg melatonin a day for a 50 lb dog (2 chews)$1.00 a day4NASC seal
Best for everyday anxiety (vet brand)
Purina Pro Plan Veterinary Supplements Calming Care
1 billion CFU B. longum BL9991 packet a day, any size dog$1.13 a day5NASC seal
We pick by the L-theanine or melatonin a 50 lb dog gets at the label dose, set against the amounts dog studies used, and cost a day. Prices on Amazon, October 28, 2026.6–8
What studies used, a day
By dog weight
Sources: Fan et al. 2023 review; Abdous et al. 2025; McGowan et al. 2018.
Do calming chews work for dogs?
The ones with enough L-theanine match what dog studies used. In one study, beagles given L-theanine for 8 weeks spent more time near a stranger.9 Purina's BL999 probiotic cut barking, pacing and spinning in 24 anxious Labradors.10 Start before the event, as the label says.
Our picks in detail
Best for most dogs: Greenies Calming Chews
2 chews give a 50 lb dog 220 mg of L-theanine a day, the most of any chew that prints its own amount, at $0.85 a day. The label steps up to 3 chews at 51 lb. It also has 540 mg of L-tryptophan per chew. The maker holds the NASC Quality Seal.1 See it on Amazon.
Lowest cost: Trecozy Calming Chews
3 chews give a 50 lb dog 12 mg of melatonin a day, inside the 0.1 to 0.3 mg per kg range, at $0.34 a day. They also hold colostrum, passionflower, chamomile, valerian, ginger.2 See it on Amazon.
Best for sleep and fireworks nights: Freeice Organic Calming Chews (Duck)
3 chews give a 50 lb dog 6 mg of melatonin a day, inside the 0.1 to 0.3 mg per kg range, at $0.22 a day. They also hold hemp seed, colostrum, passionflower, chamomile, valerian, ginger.3 See it on Amazon.
Best L-theanine + melatonin in one chew: Native Pet Calm Air-Dried Chews
2 chews give a 50 lb dog 100 mg of L-theanine and 10 mg of melatonin a day, at $1.00 a day. The maker holds the NASC Quality Seal.4 See it on Amazon.
Best for everyday anxiety (vet brand): Purina Pro Plan Veterinary Supplements Calming Care
One powder packet a day on food, for any size dog, at $1.13 a day. Its main ingredient was tested in anxious dogs. The label says it can take up to six weeks to work. The maker holds the NASC Quality Seal.5 See it on Amazon.
What's in every calming chew, per day for a 50 lb dog
Each product's own label dose for a 50 lb dog, times the amount in each serving. Cheapest first. The studied amounts: 100 mg of L-theanine; 2.3 mg to 6.8 mg of melatonin for sleep. Only products sold by Amazon.com or the brand.
Per day = what the label says to give a dog of that weight, times the amount in each serving. Cost per day = that many servings at the Amazon price, read October 28, 2026. Where a label gives a range, cost is for the low end. NASC seal = the maker holds the National Animal Supplement Council Quality Seal.
| Product | L-theanine a day | Melatonin a day | Tryptophan a day | Cost per day |
|---|---|---|---|---|
| Vitamatic Pets Melatonin 6 mg Chewable Tablets chewable tablet | — | 12 mg | — | $0.15 a day |
| Petrivium Melatonin Calming Chews soft chew; also GABA, vitamin B1, hemp seed, chamomile, valerian, passionflower, ashwagandha | 30 mg (30% of studied) | 1.5 mg | 25 mg | $0.17 a day |
| Freeice Organic Calming Chews (Duck) soft chew; also hemp seed, colostrum, passionflower, chamomile, valerian, ginger, vitamin B1 | 60 mg (60% of studied) | 6 mg | 135 mg | $0.22 a day |
| Elypuff Dog Calm Chews, Chicken (plant-based), 180 ct soft chew; also ashwagandha, valerian, chamomile, passionflower, GABA, vitamin B1 | 20 mg (20% of studied) | 4 mg | 40 mg | $0.23 a day |
| Yuma's Hemp Calming Chews, Advanced Strength soft chew; also chamomile, hemp seed, valerian, passionflower, vitamin B1 | — | 4.5 mg | 15 mg | $0.31 a day |
| Yuma's Melatonin Calming Chews, Maximum Strength soft chew; also chamomile, hemp seed, valerian, passionflower, vitamin B1 | — | 4.5 mg | 8 mg | $0.31 a day |
| Carmelie Hemp Calming Chews with Melatonin soft chew; also hemp seed, chamomile, vitamin B1, colostrum, ashwagandha, passionflower, ginger, valerian | 75 mg (75% of studied) | 6 mg | 120 mg | $0.34 a day |
| Trecozy Calming Chews soft chew; also colostrum, passionflower, chamomile, valerian, ginger, vitamin B1 | 120 mg (120% of studied) | 12 mg | 270 mg | $0.34 a day |
| Furaland Advanced Hemp Calming Chews, Beef Liver soft chew; also chamomile, hemp seed, valerian, passionflower, vitamin B1 | — | 3 mg | 15 mg | $0.35 a day |
| Grateful Pawz Hemp Calming Chews soft chew; also chamomile, hemp seed, valerian, passionflower, vitamin B1 | — | 4.5 mg | 15 mg | $0.36 a day |
| TTLXRL Calming Chews with Melatonin soft chew; also colostrum, passionflower, chamomile, valerian, ginger, vitamin B1 | 120 mg (120% of studied) | 12 mg | 270 mg | $0.39 a day |
| Premium Care Calming Chews soft chew; also hemp seed, chamomile, passionflower, valerian, ginger | — | — | 34 mg | $0.50 a day |
| K9 Select Melatonin 3 mg Beef Chewable Tablets, 120 ct chewable tablet | — | 12 mg | — | $0.60 a day |
| VetriScience Veterinary Strength Calm & Confident, Chicken, 60 soft chews · NASC seal soft chew; also vitamin B1, colostrum | 25 mg (25% of studied) | — | 75 mg | $0.60 a day |
| Pet Wellbeing Pet Melatonin (liquid) · NASC seal liquid | — | 3 mg to 6 mg (label range) | — | $0.64 a day |
| StrellaLab Hemp Calming Chews soft chew; also chamomile, passionflower, hemp seed, valerian, ginger | — | 45 mcg | 75 mg | $0.70 a day |
| Zesty Paws Calming Bites · NASC seal soft chew; also valerian, chamomile, hemp seed, passionflower, ginger, ashwagandha | in a 210 mg blend, amount not given | — | in a blend | $0.78 a day |
| Dr. Oscar HMR Lignans & Melatonin with Biotin chewable tablet | — | 6 mg | — | $0.78 a day |
| Greenies Calming Chews · NASC seal soft chew | 220 mg (220% of studied) | — | 1,080 mg | $0.85 a day |
| Solid Gold Calming Supplement Soft Chews soft chew; also chamomile, valerian, ashwagandha | in a 460 mg blend, amount not given | in a blend | in a blend | $0.93 a day |
| Pet Honesty Hemp Calming Max Strength Soft Chews (duck) · NASC seal soft chew | — | 1.3 mg | — | $0.96 a day |
| Native Pet Calm Air-Dried Chews · NASC seal air-dried chew; also hemp seed, hydrolyzed casein | 100 mg (100% of studied) | 10 mg | — | $1.00 a day |
| Purina Pro Plan Veterinary Supplements Calming Care · NASC seal powder | probiotic: 1 billion CFU BL999 | — | — | $1.13 a day |
| Pawfy Calming Chews soft chew; also chamomile, passionflower, ginger | — | — | 60 mg | $1.56 a day |
Want the most L-theanine? Greenies Calming Chews (220 mg), Trecozy Calming Chews (120 mg), TTLXRL Calming Chews with Melatonin (120 mg) and Native Pet Calm Air-Dried Chews (100 mg) reach the studied amount for a 50 lb dog. Vitamatic Pets Melatonin 6 mg Chewable Tablets (12 mg), Trecozy Calming Chews (12 mg), TTLXRL Calming Chews with Melatonin (12 mg), K9 Select Melatonin 3 mg Beef Chewable Tablets, 120 ct (12 mg) and Native Pet Calm Air-Dried Chews (10 mg) give more melatonin than the common sleep range for a 50 lb dog.
Source: Each brand's label; Amazon prices read October 28, 20268, 11
When to give it
- Fireworks, car trips, vet visits: give it before the event, as the label says (the vet L-theanine tablet says 12 hours and 2 hours before).12 Purina Calming Care can take up to six weeks, so start it early.
- Every day: give one product at its label dose for the time the label says, and watch for less barking, pacing and hiding.
- Panic, self-injury or aggression: see your vet.
What the research says
L-theanine is an amino acid from green tea. In one 8-week study, fearful beagles on L-theanine spent more time near a stranger; a 2023 review lists 100 mg a day for dogs 22 to 55 lb and 200 mg over 55 lb.6
Melatonin is the sleep hormone vets use for sleep and behavior problems.13 0.1 to 0.3 mg per kg is common for sleep: 2.3 mg to 6.8 mg for a 50 lb dog.7 The main side effect is sleepiness. Never use human melatonin with xylitol, which is toxic to dogs. Ask your vet before giving melatonin with other drugs, such as benzodiazepines.
L-tryptophan is in most calming chews; in one trial owners saw less anxiety.14
Probiotic B. longum BL999: in Purina's study, 24 anxious Labradors barked, jumped, spun and paced less on BL999 than on the placebo. See our probiotics guide for gut probiotics.
Alpha-casozepine, a milk protein: a 2023 review's table lists 15 mg per kg a day for one dog study, about 340 mg for a 50 lb dog. Most chews also add chamomile, valerian, passionflower or hemp seed.
Questions people ask
- Do calming chews work for dogs?
- The ones with enough L-theanine match what dog studies used. In one study, beagles given L-theanine for 8 weeks spent more time near a stranger. Purina's BL999 probiotic cut barking, pacing and spinning in 24 anxious Labradors. Start before the event, as the label says.
- What is the best calming chew for fireworks?
- Greenies Calming Chews gives a 50 lb dog 220 mg of L-theanine for $0.85 a day. Freeice Organic Calming Chews (Duck) gives 6 mg of melatonin for $0.22 a day. Give either one before the event, as the label says.
- How long before fireworks should I give a calming chew?
- Follow the label. The vet L-theanine tablet says to give it 12 hours and 2 hours before the event. Some chews say 30 minutes before. Purina's probiotic says it can take up to six weeks, so start it early.
- How much melatonin can I give my dog?
- 0.1 to 0.3 mg per kg is common for sleep: 2.3 mg to 6.8 mg for a 50 lb dog.
- Are calming chews safe for dogs?
- Yes for most dogs. Melatonin's main side effect is sleepiness. Never use human melatonin with xylitol. Ask your vet if your dog takes other medicine.
- Do hemp calming chews work?
- Most hemp chews work through the melatonin or L-theanine they add. Freeice Organic Calming Chews (Duck) gives 6 mg of melatonin for $0.22 a day.
Notes and sources
- Amounts and doses by weight come from each brand's label, read October 2026. See how we do the math. Where a label lists amounts per 2 chews, we halve them for one chew. Where two products tie on price, we list the better seller on Amazon.
- Hemp seed oil and powder are listed as the label names them. We did not count them as CBD.
- Product photos come from Amazon.
- Prices checked on Amazon October 28, 2026. Published .
Sources
- Greenies label: Supplements Calming Chews, Chicken Flavor, read October 2026.
- Trecozy label: Calming Chews, Chicken, 200 ct, read October 2026.
- Freeice label: Organic Calming Chews (Duck), read October 2026.
- Native Pet label: Calm Air-Dried Chews, 30 ct, read October 2026.
- Purina Pro Plan label: Veterinary Supplements Calming Care (canine), read October 2026.
- Fan Z, Bian Z, Huang H, et al., "Dietary Strategies for Relieving Stress in Pet Dogs and Cats," Antioxidants, 2023;12(3):545 (table of dog studies: L-theanine 100 mg a day for dogs 10 to 25 kg and 200 mg over 25 kg; alpha-casozepine 15 mg per kg in one study), read October 28, 2026.
- Abdous et al., "Dose-Response Effects of Oral Melatonin on Reproductive Parameters in Intact Male Pomeranian Dogs With Alopecia X: A Controlled Study," Veterinary Medicine and Science, 2025;11; the dose ranges are from its introduction (0.1 to 1.7 mg per kg in clinical use; 0.1 to 0.3 mg per kg commonly for sleep), read October 28, 2026.
- Prices: Amazon product data, read October 28, 2026. Cost per serving = listing price divided by the servings in the container.
- SkeptVet, "Evidence Update: Anxitane (L-theanine) for Anxiety in Dogs (and Cats)," 2018, with the 2014 review of Araujo JA et al., "Anxitane tablets reduce fear of human beings in a laboratory model of anxiety-related behavior," J Vet Behav 2010;5(5):268-275 (10 beagles, 8 weeks, maker-funded), read October 28, 2026.
- McGowan RTS, Barnett HR, Czarnecki-Maulden G, et al. (Nestle Purina Research), "Tapping into those 'Gut Feelings': Impact of BL999 (Bifidobacterium longum) on anxiety in dogs," 2018 conference abstract (no dose given), read October 28, 2026.
- NASC Quality Seal: from the National Animal Supplement Council's own member list and the seal on each label, read October 2026.
- Virbac Anxitane (L-theanine) chewable tablets, label directions and cautions as listed by 1-800-PetMeds (for events: half a tablet 12 hours and 2 hours before; not for severe phobias, separation anxiety or aggression), read October 28, 2026.
- Hamilton A, Gollakner R, "Melatonin," VCA Animal Hospitals, updated January 2026, read October 28, 2026.
- Sofyan L, "In adult dogs is supplementary tryptophan in the diet effective in reducing signs of anxiety?" Veterinary Evidence, 2024;9(4) (appraises two placebo-controlled trials), read October 28, 2026.
Labels for the products in the tables
- Carmelie: Hemp Calming Chews with Melatonin, Chicken, 200 ct.
- Dr. Oscar: HMR Lignans & Melatonin with Biotin.
- Elypuff: Dog Calm Chews, Chicken (plant-based), 180 ct.
- Freeice: Organic Calming Chews (Duck).
- Furaland: Advanced Hemp Calming Chews, Beef Liver.
- Grateful Pawz: Hemp Calming Chews, Chicken, 170 ct.
- Greenies: Supplements Calming Chews, Chicken Flavor.
- K9 Select: Melatonin 3 mg Beef Chewable Tablets, 120 ct.
- Native Pet: Calm Air-Dried Chews, 30 ct.
- Pawfy: Calming Chews, Turkey, approx 45 ct.
- Pet Honesty: Hemp Calming Max Strength Soft Chews (duck).
- Pet Wellbeing: Melatonin, liquid, 2 fl oz (55 ml).
- Petrivium: Melatonin Calming Chews, Chicken, 120 ct.
- Premium Care: Calming Chews, Bacon, 120 ct.
- Purina Pro Plan: Veterinary Supplements Calming Care (canine).
- Solid Gold: Calming Supplement Soft Chews with L-Theanine, L-Tryptophan & Melatonin, 120 ct.
- StrellaLab: Hemp Calming Chews, Bacon, 60 ct.
- TTLXRL: Calming Chews with Melatonin, 200 ct.
- Trecozy: Calming Chews, Chicken, 200 ct.
- VetriScience: Veterinary Strength Calm & Confident, Chicken, 60 soft chews.
- Vitamatic: Pets Melatonin 6 mg Chewable Tablets, Beef, 120 ct.
- Yuma's: Hemp Calming Chews, Advanced Strength, Chicken, 170 ct, Melatonin Calming Chews, Maximum Strength, Chicken, 170 ct.
- Zesty Paws: Calming Bites (All Ages), Peanut Butter, 90 ct.