How Long Does CBD Stay In The System?

Navigating the world of CBD and cannabinoids can be confusing to newcomers. There’s a wide range of terminology to learn and many questions that come to mind. One of these questions is “how long does CBD stay in the system?”, read on to find out!


What is CBD?


CBD, which is the abbreviation of Cannabidiol, is one of the hundreds of biologically-active compounds that are naturally produced by the cannabis plant. It is typically extracted from low-THC strains of Cannabis that fall into the category of ‘Hemp’.

For those of you who don’t know already –¬† Hemp is a term used to describe cannabis that is legal for industrial purposes. It tends to have high levels of CBD and only trace amounts of THC.

In recent years, CBD has become extremely popular as a supplement due to customers experiencing its calming and wellbeing-boosting potential. It is also used in several modern medicines. However, hemp extracts containing CBD have actually been used by humans for thousands of years.


How Long Does CBD Stay In The System?


Now that we’ve covered the basics, let’s cut to the chase – how long can cannabidiol stay in the body?

In order to work this out, scientists would first calculate something called the ‘half-life‘. The half-life is the amount of time it takes for a compound’s levels in the bloodstream to reduce by half. Once this has been worked out, it’s possible to estimate the length of time a compound stays in the system.

The half life of CBD depends on the administration method. But current research suggest the half life is as follows:

  • 2-5 days after regular oral administration
  • 24h after I.V (via injection)
  • 31h after smoking

As you can see from above, it seems that the quicker the CBD enters the bloodstream, the quicker it leaves the system. So any product with higher bioavailability such as CBD vape, CBD patches, or Water-Soluble CBD will leave the body quicker after stopping.

As most people reading this will be using CBD orally, we will use 2-5 days as the estimated half life. But it’s worth noting that this is likely to vary from person to person.

Based on this half life, we can estimate that orally-injested CBD stays in sthe system for approximately 4-10 days.

We hope this article answered your question, if you have any further doubts, please drop us a line at If you are interested in learning more about the world of hemp and cannabinoids, check out some of our previous articles on this blog, or use the button below to head over to our online blog.