There is no official CBD dosage for dogs. The FDA has not approved CBD for any use in animals, so no agency or label sets a standard amount. The safest approach is to ask your veterinarian for a starting amount in milligrams, start low, go slow, and use the simple label math below to measure that amount accurately.
This guide shows you how to read a pet CBD oil label, how to turn your dog's weight into milligrams and milliliters, and how to give CBD oil to dogs without guesswork. It does not tell you what your dog needs. Only your vet, who knows your dog's age, health and medications, can do that.
Why there is no standard CBD dose for dogs
Search "how much CBD for dogs" and you will find dozens of charts, and they rarely agree. That is because there is no approved product and no official dosing guidance to copy from. The U.S. Food and Drug Administration states on its cannabis and CBD information page that it has not approved cannabis for any use in animals, and it recommends that pet owners talk with their veterinarian.
Veterinary research on CBD is still early. Most published studies are small, use one specific product, and follow animals for weeks rather than years. Products on the market also vary a lot in strength, from a few milligrams per milliliter to fifty or more. A chart built for one brand can be off by double or half for another.
So think of any CBD oil dog dose you read online, including the numbers on this page, as math, not medical advice. Your vet sets the number. You do the measuring.
How to read a pet CBD oil label (mg per ml)
Every CBD oil label should list two numbers: the total milligrams (mg) of CBD in the bottle and the bottle size in milliliters (ml). Divide the first by the second and you get the strength per milliliter.
For example, our Pet Vet oil comes in two strengths. A 750 mg bottle holds 30 ml, so 750 divided by 30 equals 25 mg of CBD per ml. The 1500 mg bottle is also 30 ml, so it has 50 mg per ml. Same bottle size, twice the strength. That matters: the same squeeze of the dropper gives your dog twice as much CBD from the stronger bottle.
| Tahoe CBD pet product | Size | CBD per 1 ml or per capsule | Per 0.5 ml | Per 0.25 ml |
|---|---|---|---|---|
| Pet Vet CBD oil, 750 mg | 30 ml | 25 mg per ml | 12.5 mg | 6.25 mg |
| Pet Vet CBD oil, 1500 mg | 30 ml | 50 mg per ml | 25 mg | 12.5 mg |
| Pet Vet CBD capsules | 30, 60 or 90 count | 10 mg per capsule | Whole capsule only | Whole capsule only |
Before you give any amount, check which bottle you are holding. Mixing up the 750 mg and 1500 mg oil is an easy way to give twice what you meant to.
CBD oil for dogs dosage by weight: the math
Vets and researchers usually talk about CBD in milligrams per kilogram of body weight (mg/kg). For example, a small 2019 study by veterinary researchers at Cornell University and other schools, published in the journal Animals, gave healthy dogs and cats 2 mg/kg twice a day for 12 weeks while the team monitored bloodwork. That was a supervised research protocol, not a home dosing instruction. It does show why your vet will likely give you a number in mg per kg.
To use that number, first convert your dog's weight from pounds to kilograms by dividing by 2.2. Then multiply by the mg/kg figure your vet gives you. The table below uses 1 mg per kg only because it makes the math easy to scale. It is not a recommended amount.
| Dog's weight | In kg | mg of CBD for each 1 mg/kg | ml of 750 mg oil (25 mg/ml) | ml of 1500 mg oil (50 mg/ml) |
|---|---|---|---|---|
| 10 lb | 4.5 kg | 4.5 mg | 0.18 ml | 0.09 ml |
| 20 lb | 9.1 kg | 9.1 mg | 0.36 ml | 0.18 ml |
| 30 lb | 13.6 kg | 13.6 mg | 0.55 ml | 0.27 ml |
| 50 lb | 22.7 kg | 22.7 mg | 0.91 ml | 0.45 ml |
| 70 lb | 31.8 kg | 31.8 mg | 1.27 ml | 0.64 ml |
| 90 lb | 40.9 kg | 40.9 mg | 1.64 ml | 0.82 ml |
How to scale it: if your vet suggests half a milligram per kg, halve the numbers in the row. If they suggest a different amount, multiply. If they give you a flat amount instead (for example, "start with 5 mg"), divide that by the oil's mg per ml to get milliliters: 5 mg of the 25 mg/ml oil is 0.2 ml.
Small dogs need very small volumes. A tenth of a milliliter is hard to eyeball with a dropper, so ask your vet or pharmacist for an oral syringe marked in 0.1 ml steps. Drop sizes vary from dropper to dropper, which makes "drops" a rough measure at best.
Start low, go slow: a simple framework
Whatever number your vet gives you, the same careful routine applies.
- Talk to your vet first. Bring the product label and a list of every medication and supplement your dog takes. The FDA notes that in people, CBD can affect how other drugs work, so your vet will want the full picture.
- Start at the low end. Begin with the smallest amount your vet is comfortable with.
- Keep it consistent. Give it at the same time each day, measured the same way, from the same bottle.
- Change one thing at a time. Do not switch foods, treats or supplements the same week you start CBD, or you will not know what caused a change.
- Keep a short log. Write down the date, time, amount in mg and ml, and anything you notice.
- Adjust only with your vet. Any increase should be your vet's call, made after a few days of notes.
Watch for anything unusual, such as drowsiness, loose stool, vomiting, a wobbly walk or a change in appetite. In the Cornell study, loose stool was the most commonly noted issue in dogs. If you see something that worries you, stop and call your vet. For dogs on CBD over a longer period, ask whether periodic bloodwork makes sense.
How to give CBD oil to dogs
Here are the common ways owners give CBD oil to a dog. Your vet can help you pick the one that suits your dog.
- Straight into the mouth. Shake the bottle, draw up the measured amount, and gently release it into the pouch between your dog's cheek and back teeth. Do not let your dog chew a glass dropper.
- On a treat. Put the oil on a small piece of a treat your dog already loves, so they eat all of it in one bite.
- In food. Mix it into a spoonful of wet food rather than a full bowl, so you know the whole amount was eaten.
- Capsules. Hide a capsule in a soft treat or pill pocket. Capsules hold a fixed amount (10 mg in our Pet Vet capsules), so they suit dogs whose vet-recommended amount lines up with a whole capsule. Oil allows finer steps for small dogs.
Wipe the dropper or syringe clean, put the cap back on tight, and store the bottle somewhere cool and dark, out of reach of kids and pets.
Full spectrum, THC and human products
Our Pet Vet oils and capsules are full spectrum. That means they contain other hemp compounds and a trace of THC, not just CBD. (Under the 2018 Farm Bill, hemp-derived products may contain no more than 0.3% delta-9 THC on a dry-weight basis.) Ask your vet whether a full spectrum product is right for your dog. Our guide to full spectrum vs broad spectrum vs isolate explains the difference.
Please do not give your dog CBD products made for people. Human tinctures are often much stronger and may include flavorings not meant for pets, and some human edibles contain ingredients such as xylitol or chocolate that are dangerous for dogs. Keep THC products, including Delta-8, THCA flower and THC gummies, well away from pets. The FDA advises that if a pet eats a cannabis product, you contact your veterinarian, a local animal emergency hospital or an animal poison control center right away.
Hemp rules are also changing. Starting December 11, 2026, the federal hemp definition counts THCA toward total THC and caps final products at 0.4 mg total THC per container. Full spectrum products across the industry may change as a result. Read our 2026 hemp law guide for details as of October 26, 2026.
Questions to ask your vet
- Is CBD a reasonable thing to try for my dog, given their age, weight and health history?
- What amount in mg should I start with, and how often?
- Could CBD affect any of my dog's current medications?
- Is a full spectrum product with trace THC okay, or should I look for something else?
- What signs should make me stop and call you?
- Should we check bloodwork if my dog stays on it for a while?
Bring the bottle or a photo of the label so your vet can see the exact mg per ml.
How Tahoe CBD fits in
Tahoe CBD is a family-run hemp and CBD shop in South Lake Tahoe, open since 2012. Our Pet Vet CBD oil comes in 750 mg and 1500 mg strengths in a 30 ml bottle, with Natural and Chicken flavors (plus Bacon on the 1500 mg). The Pet Vet CBD capsules hold 10 mg each. You can browse everything in our pet CBD category.
A quick note on the names: "Pet Vet" and "Pet Rx" are product line names. They do not mean a veterinarian has approved the product or that it is a prescription. Third-party lab reports are posted on our Lab Reports page when available. Ask us about any product before you buy and we will send the most recent report we have for it, or tell you plainly that it is not available yet.
Have a cat too? Cats are not small dogs, so read our separate guide to CBD oil for cats. Questions about a label? Call the store at (530) 544-6666 or email service@tahoecbd.com. We are happy to walk you through the math.
