How Long Does CBD Last In Your System?


If you’ve found yourself researching the question how long does CBD last, we first need to figure out exactly what you’re asking. Do you want to know how long does CBD oil stay in your system? Are you wondering about how long does CBD effects last? Or are you truly just curious about how long does CBD stay in your system for your own curiosity?

CBD Oil in your system

The short answer is: Studies showed that CBD normally stays in your system for about 3-5 days, but the effects will last about 3-6 hours.

In one study by the College of Pharmacy, University of Arizona Health Sciences CenterThe patients were taking high doses of 700 mg of CBD/day for 6 weeks. After they took high doses for 6 weeks, the participants’ blood was tested for CBD one week after of not dosing, and it was found that it was completely gone. This is an extreme case of high dosing, and the CBD was out of their system after a week.

Therefore, for moderate to light users, the time that CBD oil will stay in your system is around 3-5 days, with a week being the absolute maximum. How long the CBD stays in your system also can depend on several factors such as weight and obviously usage, but it definitely won’t be any longer than a week. This goes for all CBD Products such as CBD Tinctures, CBD Edibles, CBD Vape, CBD Topical Cream etc.


Once you start to feel the immediate effects of CBD Hemp Oil, they will usually last around 3-6 hours. You’ll start to notice when the effects start to wear off if the symptoms you are trying to mitigate start to come back. Once that happens, you should take another dose if needed. Remember that regardless of using CBD for treating a health condition, CBD should also be used as a daily nutritional supplement to bring balance homeostasis) to your endocannabinoid system. CB1 & CB2 cannabinoid receptors present in your Central Nervous System, Cardiovascular System, Digestive System and Lymph System. You will reduce overall inflammation and promote long term healing.

The length of time that CBD effects will last in your system is going to be, generally dependent on body weight, usage and method of taking it. The answers provided here are calculated estimates and averages meant to give you a general idea of the time frame.

There are four main methods of use with CBD

  • The first one is inhalation and that covers vaping and smoking.
  • The next is topical use, which is using CBD externally on your skin.
  • After that is sublingual use, and this is using CBD products that get absorbed through the mucous membrane of your mouth.
  • And last but not least usage is ingestion. This is when you do eat it in either a food product or swallowing a capsule.

Each one of these is going to have slightly different duration of effects.

Inhalation Effects

Inhalation is going to last anywhere from one to four hours for most people. So when you smoke or vaporize a CBD product, it will last from about one to four hours, before you may need to do it again.

Sublingual Effects

For sublingual method, you are going to have a very similar duration. It might last a little bit longer, so you might get about one to four or one to six hours, before you need to do it again.

They’re never meant to be absorbed through your stomach and digestive system. They’re really meant to be absorbed through your mouth mostly.

Of course some might not be all fully absorbed and some might get swallowed. But the point of them is to be absorb through your mouth for a faster onset.

Inhalation and sublingual are generally your fastest onset, so the fastest you’re gonna feel the effect. And then they also last the may least amount of time.

Topical Effects

For topical, it’s not as clear yet how long it lasts. But the good thing about topical is, you can apply it pretty liberally.

There isn’t a lot of risk as much for a side effect or taking too much so you can apply very liberally to the area of where you have either irritation or pain.

Still start with a small amount because you don’t want to waste it. But you will figure out what works for you and how long it lasts. And then you can always just reapply as needed.

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Ingestion Effects

Last but not least of course is ingestion. The effects from this method, it takes the longest to feel it but it also lasts the longest. This is why a lot of people like it so. Of course the classic example is cannabis brownies.

Some people prefer those, generally because they last longer. And the same applies to when you swallow a capsule as well or you take CBD extract and add to a piece of food and you eat it.

Basically anything we are swallowing and it’s going through your stomach is going to be called ingestion. That’s going to last the longest. It’s about six to eight hours.


If you are wondering how long does CBD stay in your system because of a drug test you have to take; don’t worry.

Companies simply don’t Administer CBD Oil Drug Tests. If your employer does perform drug tests, they are testing for several other hard drugs and THC, the most active chemical in cannabis, not CBD. In an article from Leafly, they state that as long as your CBD Hemp product does not contain trace amounts of THC then you will not show up positive on a drug test, and they go into great detail on the scientific specifics.

To make sure your hemp oil does not have THC it is recommended that you get your CBD Products from a verified and trusted source. We go over the best brands to buy from for each type of CBD Product so you know for sure you are getting from a trusted source.

CBD isn’t drug tested in large part because of its non-psychoactive properties. The reason for companies’ drug testing is that they understandably don’t want their employees impaired while on the job. Because CBD won’t impair you, there’s simply no reason for them to drug test for it.


What a lot of people are curious about is how long the CBD Oil effects will last. This is an important question to answer because it makes a big difference in deciding your dosage and when you plan on taking the CBD.

Depending on your method of taking CBD, the effects will start to kick in anywhere from 10 minutes to 1 hour. If you take CBD Vape Oil, dabbing, or dropping CBD Oil under your tongue, it will take around 10-15 minutes for you to start to feel the effects. Conversely, if you eat CBD edibles or swallow a capsule, the effects usually take over an hour to kick in. A general rule is that the faster methods will last for a shorter time, while the ways to take CBD orally will last longer and be more powerful.

Why Isn’t There An Easy Answer?

Shouldn’t there be an easy answer to this question? Maybe. But we’ll explain why there is not one.

The first thing to consider for this point is the fact that we have not always had access to CBD the way we do today. We were not using CBD for therapeutic or medicinal purposes until just recently.

Therefore, there is an insufficient amount of information out there about how long does CBD stay in your system. No one is really quite sure yet. We need more time and more studies!

The closest thing we have to a definitive answer is that in most cases, it seems that it takes about three to five days. In other words, it takes that long for CBD to completely leave your body and be out of your system.

The good news is that as mentioned above, there are studies looking for this answer. In one study, patients were given a very high dose of CBD. Every day for six weeks, the patients took 700mg of CBD. When they were tested after a week of not taking CBD, it was almost entirely out of their system.

Thus, experts estimate that CBD probably has a half life of between two and five days in the human body. This goes for both genders.

In addition, it might be of interest to you to note that the test subjects did not demonstrate any trace of THC in their systems. This might seem obvious, since supposedly pure CBD does not contain THC or just a legal small amount of 0.3%, but it may put your mind at ease.

Thus, if you use CBD in normal doses, it likely will not be in your system for any longer than a week once you stop using it.

CBD’s Effects Over Time

Over time, CBD starts to act as a neuro protectant. This basically means that the CBD interacts with the neurons and cannabinoids already in your body. These factors are a part of the Endocannabinoid system. Thus, CBD may actually start to protect your brain over time. But again, all of this takes time. So if you do not give CBD a sufficient trial period to work its magic, don’t be surprised when it “doesn’t work” for you!

How long does CBD effects last? How long should you wait? Give your CBD regimen anywhere from a few weeks to a couple of months. You should wait at least this long before making any declarations about how CBD has worked out for you.

Remember: if you don’t notice any changes right away, that’s okay. The CBD likely just needs some time to begin nourishing your body and making a difference that’s obvious to you.

How long does CBD effect last: Summarized

So you have four main ways to use CBD. And that is inhalation, ingestion, topical use and sublingual use. Each one of those is gonna have a different time of how fast you feel it and how long it lasts.

With inhalation and sublingual use, it’s pretty similar. They’re gonna last anywhere from about one hour to four hours.

With topical use it’s really gonna vary a lot depending on how well it’s absorbed and how much you use. So that one you will just figure out for yourself.

And again, you can always apply more if needed. For some people it might give them a relief for two hours maybe for three hours and then if it wears off you just apply more again.

Last but not least again is ingestion. A lot of people like this method because it lasts the longest. This is going to be, when you’re eating CBD edibles or taking a CBD capsule and swallowing it.

It’s going to last from 6 to 8 hours. And that is a really good for some people because it lasts long. It’s more spread out and they have to take less throughout the day.

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