How Long Does CBD Stay in Your System?

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How Long Does CBD Stay in Your System?

You may recall from chemistry class the term “half-life”—the time it takes for an element to decay by half its original value. While often utilized in nuclear physics to describe the decay of radioactive atoms, the concept also applies to the metabolization of substances by biological processes in the human body. Alcohol, prescription medications, metals, and even water have biological half-lives and deteriorate at different rates.

In this blog post, we’ll address the following:

https://zatural.com/blogs/blog/how-does-cbd-make-you-feel

So, How Long Does CBD Stay in Your System?

CBD is no different. It decays like all other compounds, but that rate of decay varies depending on many factors. A 2014 study titled Cannabidiol: Promise and Pitfalls concluded that the half-life of orally-administered CBD was about 1 to 2 days. In other words, if you were to take 40 mg of CBD, only 20 mg would remain after 1 to 2 days. As noted in a 2012 study, CBD half-life changes based on the method of consumption:

  • IV administration: 18 – 33 hours
  • Oral administration: 2 – 5 days
  • Smoking: 27 – 35 hours

A general rule of thumb in pharmacokinetics, which studies how drugs move throughout the body, is that it takes 4 – 5 half-lives for a drug to be effectively eliminated. The point at which the intake of a drug is at equilibrium with its elimination is known as its “steady state.” In keeping with the previous example, if the half-life of CBD is assumed to be 1 to 2 days, then it would take anywhere between 4 to 10 days for any given dosage of CBD to reach this steady state.

What Factors Contribute to How Long CBD Stays in Your System?

It’s important to note that these are merely ballpark estimates, and that multiple other factors contribute to varying rates of CBD decay, including:

  • Age
  • Sex
  • Weight
  • Metabolism
  • Lifestyle
  • Frequency of use

Because of this, it can be very difficult to assess exactly how long CBD lingers in the body, and at what concentrations. CBD is fat-soluble and can build up and store in fat cells for quite a while, especially in daily and high-BMI users. Those who live very active lifestyles, on the other hand, will most likely metabolize CBD at a faster rate than even a moderately active person. Likewise, all other things being equal, a younger person will naturally metabolize CBD faster than someone much older.

Does Frequency of Use Change How Long CBD Stays in the System?

Arguably, the most crucial factor when it comes to drug elimination is the frequency of use. How much and how often someone uses a substance will have a major and perhaps the most significant effect on how long it takes for that substance—be it CBD or any other drug—to dissipate completely.

Unfortunately, there is no single definitive answer to the question of how long CBD stays in your system; there are just too many different contributing factors. But it’s also essential to address the reasoning behind such an inquiry. Too often, it’s a question pitched by CBD enthusiasts who are worried about testing positive for THC in a drug test as a result of their CBD use, although this is exceptionally rare (as discussed in a separate blog post).

As the market for CBD continues to expand, so will the need for additional clinical trials and other scientific testing. In due time, we may yet gain more detailed insight into the effects—and duration—of CBD in the body.

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Comments 3
  • Zatural
    Zatural

    Hi Theresa, since the CBD is taken Sublingually for most absorption, you can take it before or after eating.

  • Robin CAMACHO
    Robin CAMACHO

    Interesting things I sure me er had answered before by any company I’ve gotten CBD oil from. I do know 1) it’s been a plus in my stri ing for better alternatives for my cancer pain, my well-being & my position ity. My 17 yr old dog also takes a cbd product that I have documented in photo before & agters. I am 67 yrs old, have used opiate based painkillers, which can lead to a multitude of problems I do not want/need. I am so glad I found your product, many others did not have the integrity you show and your price for my socsecurity low income is affordable. I’ve paid more & gotten less using other brands. Thank you and for including the free probiotic

  • Theresa
    Theresa

    When is the best time to take CBD oil? I take two doses a day, am and pm. Should it be taken before I eat on an empty stomach or does it not matter.
    Thank you
    Theresa

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