In this article, I am going to walk you through how to calculate a dose of CBD for your dog.

My favorite CBD product is HempRx by Rx Vitamins for Pets. For small dogs, I recommend starting with the HempRx Soft Chewz or the HempRx oil. If your pup is 20 lb or larger, I recommend using the HempRx Forte to save money. This version is twice as concentrated with over twice the volume.

Products with high levels of CBD are expensive. For this reason, it is most economical to find the smallest dose that is effective for your dog. There are no industry wide established doses for dogs currently. As the cannabis market expands, more resources will be dedicated to research in optimal dosing for dogs.

Choosing A Dose

I start with 0.2 mg/kg twice daily and work up to 0.5 mg/kg or higher twice daily. The HempRx Soft Chewz for Small Dogs contains 1 mg per chew, while the HempRx Soft Chewz for Dogs contains 3 mg per chew. HempRx oil contains 0.5 mg per drop and the HempRx Forte contains 1 mg per drop.

It is safe to increase the dose past 0.5 mg/kg twice daily. Often for pain, seizures or severe inflammatory disease, I increase to 2-3 mg/kg twice daily. For reference, all of my animals are on 2 mg/kg or more twice daily. I definitely have the HempRx Forte in my fridge! If your dog tolerates CBD, the only downsides to a higher dose, is a higher cost.

Calculating a Dose

If you want to skip the calculations, I have a dosing chart here. However, if you want to calculate the dose yourself, here is how.

Step 1: Convert your pup’s weight from pounds (lbs) to kilograms (kg). You can do this by dividing the weight in pounds by 2.2. Let’s start with an 40 lb dog.

40lb (division sign) 2.2 = 18 kg

Step 2: Multiply the number of milligrams (mg) in the dose by the number of kilograms (kg). If the dose is 0.2 mg/kg, you would multiply 18 kg x 0.2 mg to get 3.6 mg. I would round this up to 4 mg.

0.2 mg x 18 kg = 3.6 mg per dose, round to 4 mg per dose

Step 3: Use the concentration of the CBD product you are using to calculate the volume of oil you should administer. Depending on the product you are using, this is easier said than done. If you are using HempRx or HempRx Forte, it’s REALLY simple! HempRx has 0.5 mg per drop. HempRx Forte has 1 mg per drop. For example if you need to give your pup 4 mg of CBD twice daily. You could use 8 drops of the HempRx or 4 drops of the HempRx Forte twice daily.

If you are using another product, you need to know how many milligrams (mg) of CBD is in each milliliter (mL) of oil. Unfortunately there are a few companies that refuse to disclose this information. It is impossible to know if the dose you are using is therapeutic. For this reason, I don’t recommend these products.

Once you know how many milligrams of CBD are in each milliliter (ml) you can calculate the dose volume. For example, HempRx has 15 mg of CBD per milliliter (mL) of oil. If I have calculated my dose to 4 mg of CBD twice daily, I simply divide 4 by 15 to get the number of milliliters of oil I need to give my kitty.

HempRx has 15 mg/ml of CBD Dose of CBD is 4 mg twice daily 4 mg (divided by sign) 15 mg = 0.266 ml Dosing past one tenth of a milliliter is difficult. Don’t do it!

I would round 0.266 mls to 0.3 mls. For this volume, you could use a 1 milliliter syringe and draw back to 0.3 mL mark. If you prefer to use the dropper in the bottle, you could estimate a third of the dropper. This assumes the dropper holds 1 mL of liquid. For reference 1 milliliter (mL) is equal to a cc.

Is your head spinning with numbers and units of measurements yet? Feel free to post questions in the comments below!

Sending you and your pet all of my love,