CBD Dosage Calculator UK: How to Dose CBD Oil Correctly

If you plan to take CBD oil, the first hurdle you probably encounter is finding the correct dosage for your needs. With so many CBD products available on the market things can get a bit confusing and you don't want to take too little CBD oil but also not take too much. But don't worry! We're here to help you determine the optimal amount of CBD oil without too much guesswork!

By using some easy guidelines and taking into account factors such as your weight, desired effect and the concentration of the product itself (the potency of the CBD) - finding your desired dose is easy. 

The basic rule when it comes to incorporating CBD oil into your daily routine is to start with a small dosage and gradually increase it as needed. Pay attention to how the CBD oil affects your body. Last but not least, always consult a healthcare professional before making any changes to your health regimen if you have an underlying illness or are taking prescription medication.

CBD Oil Dosage Calculator Basics

It's crucial to understand that no individual is the same and CBD affects everyone differently. Factors such as body weight, lifestyle and the desired effects of CBD should be considered when determining the best CBD strength and dosage. 

You can find a CBD dosage calculator on many websites. Here you'll typically need to input your weight, the severity of your condition and the concentration of CBD in the product you're using. The calculator will then provide a suggested daily dosage of how much CBD oil you should be using expressed in milligrams of CBD. But if you use such a calculator be wary of companies that are trying to trick you into taking too much CBD! 

We suggest instead that you start with a small dose between 10-20mg of CBD. If you are heavier or more active, opt for the higher end. Monitor your body's reaction over time and gradually increase until you find your optimal dosage. It's essential to calculate your CBD usage correctly and keep track of the CBD amount you're taking in one day. The FSA suggests not to exceed a dose of 70mg of CBD per day [1]

To appropriately calculate your daily dose of CBD - check the label of your CBD product for the total CBD content in milligram and divide this by the amount of milliliter in the bottle. This will help you determine the potency of the CBD oil and figure out if you need to take an entire pipette (1ml) or less. Especially for those new to CBD dosing is a little bit easier with products like CBD gummies or CBD capsules that have a pre-defined CBD content per piece. You can also vary between all these products - but keep in mind to adjust your intake accordingly.

If you have doubts, you can always reach out to our customer service, we are happy to help! 


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Why an Optimal CBD Oil Dosage Matters

The correct daily CBD dosage can have a significant impact on the overall effects and benefits of CBD. Too little may not provide the desired benefits while too much might result in unwanted side effects.

Trial and error is a helpful approach when trying to find your optimal dose of CBD. Start with a low dose and gradually increase it until you notice the desired effects. Tracking your response to different doses will help you find the balance that works best for you. While 10mg might help you feel more relaxed during the day [2], it might not be enough to support your sleep - and you would opt for something like 25mg [3]. On the other hand, taking those 25mg first thing in the morning might not be a good idea as it might make you feel drowsy during working hours. 


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What About the CBD Dose for Dogs?

When it comes to using CBD oil for your dog calculating the proper dosage can be challenging. Consider the size and weight of your dog. Larger dogs typically require a higher dosage than smaller dogs. Guidance provided by Health Canada currently states that the amount of CBD for dogs should be between 0.2 and 2 mg per kg bodyweight daily [4].

Start on the lower end of the above recommendation. If you notice positive results with no adverse side effects you can slowly increase the dose as needed. Always keep track of your dog's response to the CBD oil and adjust the dosage accordingly. For dogs and humans alike: remember to be patient and give the CBD some time to take effect! 

We would like to add that in any case it's essential to consult with your veterinarian before starting your dog on any CBD regimen! They can help you determine if CBD oil is suitable for your dog's condition and advise on any potential concerns or interactions with other medications.


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Adjusting How Much CBD You Take Over Time

As you begin your journey with CBD oil it's essential to find the right starting dose. But life is busy and full of changes - so reevaluate and adjust it over time. Always listen to your body.

Stick with a certain daily dose consistently for a few days. Monitor any changes in your symptoms and well-being before making changes. You might need to gradually increase the dose if you're not experiencing the desired results. But don't rush it - it could take time for your body to respond to CBD. Increase the dose slowly! Such as raising it by 5-10mg every few days or each week. 

If you find that a higher dose provides better results - stick to it for a while. If you experience any side effects or discomfort at any given point you may need to lower the dose to a more suitable level. If you are planning on using CBD alongside other medications it's mandatory to speak to your doctor first.


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Portrait of Anna Falk

written by

anna falk - head of product

As the Head of Product at Harmony, Dr Anna Falk leads the development of our products and provides expert tips for your wellness. With over 10 years of experience in the research and development of natural products, her work is based on rigorous scientific studies.

Anna is an award-winning, internationally published researcher with a PhD in Organic Chemistry. She applies her expertise to develop Harmony's certified products that support your overall well-being. From research to development, she ensures that our products are of the highest quality and meet the highest standards.

We ensure our content is current and accurate with strict guidelines about sourcing that rely on governmental authority, academic institutions and peer-reviewed studies..

  • [1] Official FSA website.link to source
  • [2] Blessing EM, Steenkamp MM, Manzanares J, Marmar CR. Cannabidiol as a Potential Treatment for Anxiety Disorders. Neurotherapeutics. 2015 Oct;12(4):825-36.link to source
  • [3] Shannon S, Lewis N, Lee H, Hughes S. Cannabidiol in Anxiety and Sleep: A Large Case Series. Perm J. 2019;23:18-041.link to source
  • [4] REVIEW OF CANNABIDIOL - Report of the Science Advisory Committee on Health Products Containing Cannabis.link to source