The duration CBD stays in your system depends on dosage, method of use, and individual body factors. Typically, CBD can be present from a few hours to a month. 

The half-life (is how long the body takes to eliminate one-half of a substance) of CBD, or the time it takes for half of the substance to be eliminated, ranges from one hour to five days. Most substances are eliminated in four to five half-lives.   

CBD sprays and drops have a half-life of 1.4 to 10.9 hours. Chronic oral use extends the half-life to 2 to 5 days, while smoking gives a half-life of about 31 hours. 

Thus, CBD sprays might remain for up to 2 days, oral consumption for up to 25 days, and smoking for about a week. 

Diagram displaying half-lives of CBD for sprays, oral consumption, and smoking

What Affects How Long CBD Stays in Your Body? 

How Much You Use 

Higher doses mean CBD stays longer in your system. 

How Often You Use It 

Regular use leads to buildup in your system, taking longer to clear out compared to occasional use. 

Your Body Type 

Factors like body size, water content, and metabolism affect how long CBD stays in your system. 

Food You Eat 

Taking CBD on a full stomach can delay absorption but increase peak concentration. Fasting leads to quicker absorption but faster elimination. 

How You Take CBD 

  • Oils and tinctures: Absorbed quickly, linger longer. 
  • Pills and capsules: Slower to metabolize. 
  • Edibles: Slow due to digestion. 
  • Vaping: Quick entry and exit. 
  • Creams and lotions: Slow absorption and elimination. 

Chart illustrating the duration of CBD in the system for oils, pills, edibles, vaping, and creams

How Quickly Does CBD Start Working? 

Effects can be felt within 15 minutes when vaping or using drops. Edibles and lotions may take up to an hour or more. 

How Long Do CBD Effects Last? 

Effects of CBD can last from 2 to 6 hours, depending on dosage and method of use. 

Will CBD Show Up on a Drug Test? 

CBD itself is unlikely to show up on a drug test, but THC, often present in CBD products, can be detected. THC levels depend on the type of CBD: 

  • Full-spectrum CBD: Contains all natural compounds, including THC. 
  • Broad-spectrum CBD: Contains multiple cannabinoids, typically no THC. 
  • CBD isolate: Only CBD, no other cannabinoids. 

Choose broad-spectrum or isolate products if concerned about THC. Ensure products are hemp-derived, containing less than 0.3% THC. 

Comparison table of full-spectrum, broad-spectrum, and CBD isolate products

Important Legal Information 

The 2018 Farm Bill legalized hemp-derived CBD products with less than 0.3% THC at the federal level. Products with higher THC content are still federally illegal. State laws vary, so check local regulations. The FDA has not approved nonprescription CBD products, and some may be inaccurately labelled. 

Infographic showing the legal status of CBD in the United States

Additional Information 

Types of Drug Tests   

Different drug tests have varying detection windows for CBD: 

  • Urine Tests: CBD can be detected for up to three days. THC metabolites may stay for up to 15 days. 
  • Hair Tests: THC metabolites can be detected for at least 90 days. 
  • Saliva Tests: CBD can stay in saliva for up to three days. 
  • Blood Tests: CBD traces may remain for at least a week, while THC is detectable for at least five hours. 

Graphic illustrating detection windows for urine, hair, saliva, and blood tests for CBD

Withdrawal Symptoms 

Some individuals may experience withdrawal symptoms if they stop using CBD, such as: 

  • Physical symptoms: abdominal pain, tremors, sweating, fever, chills, headache 
  • Psychological symptoms: anxiety, depressed mood, irritability, decreased appetite 

Addiction Risk 

While CBD is generally not addictive, individuals with a history of substance abuse or certain psychological disorders may be at higher risk. It’s important to consult with a healthcare professional for personalized advice.