cannabidiol vs rifampin
Side-by-side comparison of cannabidiol and rifampin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
( 7.2 ) 7.1 Effect of Other Drugs on EPIDIOLEX Strong CYP3A4 or CYP2C19 Inducers Concomitant use with a strong CYP3A4 and CYP2C19 inducer (rifampin 600 mg once daily) decreased cannabidiol and 7‑OH‑CBD plasma concentrations by approximately 32% and 63%.
Recommendation: Your doctor may need to adjust your dose of cannabidiol to ensure it still works properly while you are taking rifampin.
Epidiolex
Rifadin
Epidiolex is a medicine that contains cannabidiol. It is used to treat seizures in people with certain conditions.
Rifampin is an antibiotic medicine. It fights bacteria in your body to treat infections.
Epidiolex is used to treat seizures linked to Lennox-Gastaut syndrome (LGS), Dravet syndrome (DS), or tuberous sclerosis complex (TSC). It is for patients who are at least 1 year old. These conditions can cause seizures that are hard to control.
Rifampin treats tuberculosis (TB) and helps eliminate the bacteria that cause meningitis from your nose and throat. It is important to use rifampin only for infections that are proven or strongly suspected to be caused by bacteria. This helps to prevent bacteria from becoming resistant to the medicine.
Epidiolex contains cannabidiol, which is a substance that may affect how the brain works. It is thought to reduce seizures by acting on certain brain chemicals. The exact way it works is not fully understood.
Rifampin works by stopping bacteria from growing and multiplying. It does this by blocking a key enzyme that the bacteria need to make proteins. This helps your body fight off the infection.
- • Feeling sleepy
- • Decreased appetite
- • Diarrhea
- • Changes in liver blood tests
- • Feeling tired or weak
- • Heartburn
- • Upset stomach
- • Loss of appetite
- • Nausea
- • Vomiting
- Seizure 5,791
- Hospital stay 2,073
- Diarrhea 1,695
- Sleepiness 1,242
- Death 1,204
- Drug Interaction 970
- Drug Reaction With Eosinophilia And Systemic Symptoms 727
- Nausea 628
- Condition Aggravated 550
- Pyrexia 541
Epidiolex can cause liver problems. Your doctor will check your liver before you start and during treatment. Tell your doctor right away if you feel very tired, have yellowing of the skin or eyes, dark urine, or loss of appetite. Epidiolex may also cause sleepiness or suicidal thoughts. Tell your doctor if you have any changes in mood or behavior.
Rifampin can cause liver problems. Tell your doctor right away if you have yellowing of the skin or eyes, dark urine, or stomach pain. Rifampin can also cause blood problems. Tell your doctor if you have unusual bleeding or bruising.
Tell your doctor if you are pregnant or plan to become pregnant. Epidiolex may harm your unborn baby. There are pregnancy programs to monitor outcomes, so talk to your doctor about enrolling. It is not known if Epidiolex passes into breast milk, so talk to your doctor about the best way to feed your baby if you are taking this medicine.
Tell your doctor if you are pregnant or plan to become pregnant. Rifampin can make birth control pills less effective, so use other forms of birth control. Talk to your doctor if you are breastfeeding.
How to Read This cannabidiol vs rifampin Comparison
cannabidiol is classified in the Cannabinoid (Anticonvulsant) drug class, while rifampin sits within the Rifamycin Antibiotic class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, cannabidiol has 12,005 submissions while rifampin has 3,416. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to rifampin makes your body clear cannabidiol much faster than usual, which makes the medicine less effective.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between cannabidiol and rifampin - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.