How long it takes for CBD to work depends on the concentration, potency or purity of the CBD product as well as the frequency with which a user A bottle of CBD oil can last anywhere from a couple of days to over a year. It all depends on how much CBD is in the bottle and how much you take per day.
How long does it take for CBD to work?
The use of cannabidiol, just one of several cannabinoids extracted from the cannabis plant, has vastly increased in recent years.
Many who had previously been opposed to cannabis-based products are finding themselves embracing mother nature’s natural healer.
With very few side effects and a whole host of therapeutic health benefits , it’s the perfect option for those who are looking to treat their health conditions naturally.
It’s also increasing in popularity among those in the medical community who have been failed by the pharmaceutical drugs currently available to them.
This includes those with rare cases of epilepsy, where studies have found that CBD can reduce median motor seizures by 70.6%.
Despite these promising results, with similar studies being released on other conditions every year, some people still find themselves struggling to understand CBD oil .
One of the main questions people ask is how long does CBD last? On average the effects of CBD tend to last anywhere between 2-6 hours, but this can largely depend on a variety of factors (explored in detail below).
There have been a lot of studies and anecdotal evidence that provides scientific guidelines on how long CBD dosages last and how much you should take.
In this article, we will break this information down so it can be easily digestible, and helps you finally answer the question about how long does CBD last?
Factors That Affect CBD Absorption
So you want to know how long does CBD last?
If so, the first thing you need to remember is that there are several different factors that can affect CBD absorption and its effectiveness.
On average, research says that the effects of CBD tend to last anywhere between 2-6 hours, but this can largely depend on what methods you’re using to take the cannabinoid.
This estimated figure is probably accurate for popular methods like vaping, where CBD directly enters your body and reacts with the endocannabinoid system quickly.
When some experts say that CBD takes between three or four days to exit your body completely, it’s reasonable to suggest that edibles and gummies, which have to go through the digestive system, will have effects that last far longer.
Another factor to consider is that CBD is fat-soluble, meaning it is stored in fat cells.
This means that those who exercise regularly, metabolize fat faster and have a lower density of fat cells will find that effects of CBD wear off more quickly.
The frequency of usage and dosage can also have an impact on the effectiveness of CBD.
Like with most medications, CBD will have heightened benefits if you continue to use it on a longer basis.
Instead of your body expelling CBD within three or four days, moderate users may find that this remains in their body for five or six.
With repeated use over time, this number increases further, with some people able to retain the CBD compound in their body for 10 to 15 days after consuming it.
With this in mind, the strength of your dosage will also have an impact on the effectiveness of the CBD.
If you use something extremely strong, it will take quite some time to be completely eliminated from the body.
Anecdotal evidence suggests that regular consumers of large doses of CBD can have the compound in their body anywhere between three weeks to a month after they stop consuming it.
The effectiveness of cannabidiol can also be impacted by certain pharmaceutical medications, so it’s worth speaking to your doctor before taking CBD if you are on any other medications.
Methods Of Consumption & How Each Impacts How Long CBD Stays In Your System
As the popularity of CBD continues to rise, so too do the methods you can use to consume it.
As the market worth of CBD continues to grow, having been predicted to reach 20 billion by 2024 , it’s highly possible that more consumption methods will arise on the market in coming years.
With that being said, the six methods we have mentioned below are some of the most popular, and have the most evidence backing up their effectiveness.
This section will also answer your question ‘how long does CBD last?’ more specifically, depending directly upon which method you choose to use.
Marketed as a dietary supplement, CBD tinctures are made using a mixture of alcohol and water to extract compounds from the cannabis plant.
Sometimes, tincture extracts will also be created using glycerin, vinegar or oil as a solvent instead.
How Long Will a Bottle of CBD Oil Last?
A bottle of CBD oil can last anywhere from a couple of days to over a year. It all depends on how much CBD is in the bottle and how much you take per day.
This is a common question for people who are getting into CBD and deciding on the right CBD oil to buy to save money and the hassle of multiple purchases.
Here’s everything you need to know about how long a bottle of CBD oil will last you, its shelf life, and related questions.
How Long Will My CBD Oil Last?
To figure this out, you’ll need to know the total amount of CBD in your tincture and how much of it you take daily in milligrams (mg). Then, you can simply divide the CBD amount by your daily dose.
Let’s say your CBD oil contains 900 mg of CBD. If you take a 30 mg CBD dose once a day, this CBD oil will last you 900/30 = 30 days. Alternatively, let’s say you take a 15 mg CBD dose every two days. This means the oil will last you (900/15)x2 = 120 days.
If you need help figuring out how much CBD you’re taking per dose, many CBD products will list how much CBD is in a serving or one dropper, but that’s not always the case.
If the amount is not listed, you should check the volume of your bottle. Most CBD oils come in 30 ml bottles but sizes can range anywhere from 5 ml to 120 ml.
It’s also helpful to know that one full dropper of CBD oil is roughly equal to one ml of liquid or about 20 drops.
So if you have a CBD oil with 900 mg of CBD in a 30 ml bottle, that means one full dropper (1 ml) will contain 30 mg. Meanwhile, one drop of this oil will be roughly 30/20=1.5 mg of CBD.
Now, you can simply multiply the number of drops you’re taking to figure out your daily dose. Then, you can divide the total CBD content by that number to see how many days your 30 ml bottle will last.
How to Choose a CBD Oil That Will Last As Long As You Need
What about when you need to choose a product that will last you a certain length of time?
The amount of CBD in a tincture can vary greatly from as low as 250 mg to as high as 7500 mg. This means you need to find the product whose total CBD content matches your desired dosage and the length of time you need the oil to last.
Let’s say you’re a new CBD user who wants to take 10 mg of CBD per day and have the bottle last for 30 days. In that case, you’ll need an oil that will last 10 mg times 30 days, so it has to contain at least 300 mg of CBD.
Or, if you want it to last 90 days, then you need an oil with at least 10×90 = 900 mg. What about one year (365 days)? 10×365 = 3650 mg.
Meanwhile, if you’re an experienced CBD user, you’ll likely be using larger doses. In that case, simply multiply your daily dose by the number of days you need the bottle to last, and buy oil that contains at least that much CBD.
Again, keep in mind that if you don’t use CBD daily, you’ll need to do some additional calculations. For example, let’s say you use 50 mg of CBD per week and you want your CBD oil bottle to last you 3 months.
One month is roughly 4 weeks, so that’s 200 mg of CBD per month. Times that number by 3 months, which means you need a 600 mg bottle of CBD oil.
How Long is CBD Oil’s Shelf Life?
It’s also helpful to know the shelf life of CBD, especially if you want your product to last for months.
Assuming that you store your CBD oil properly — in a cool, dark, dry place away from any heat and humidity — most CBD oils have a shelf life of 14 months to over a year.
Your safest bet is usually the fridge, although you can also store CBD in a dark cabinet as long as the room doesn’t get too hot.
Another factor that will affect the shelf life is the carrier oil. All CBD oils contain a carrier oil, which is the ingredient that helps your body absorb CBD better. The vast majority of CBD oils use coconut-derived MCT oil, which is known for its long shelf life of about two years.
Other carrier oils, such as hemp seed oil, have a shorter shelf life, but it’s still more than long enough for most people’s needs.
In that sense, as long as you store CBD oil correctly, you don’t have anything to worry about.
Having said that, if your CBD oil smells very different from when you purchased it and the oil looks very cloudy, it may have gone bad and you should throw it away. It’s usually very apparent and easy to tell if your oil is expired.
Gleb is a freelance writer from Vancouver, Canada specializing in CBD and cannabis. He’s read thousands of studies on CBD and other supplements, helping him translate complex science into plain language. Gleb has tried and reviewed dozens of CBD brands and products, written third-party testing reports, and knows the CBD industry inside and out. When not writing, he likes to kickbox, travel, and tell everyone how awesome intermittent fasting is.