cannabidiol vs tizanidine
Side-by-side comparison of cannabidiol and tizanidine. 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
Increases in exposure of certain CYP1A2 substrates (e.g., theophylline, tizanidine) may be observed when concomitantly used with EPIDIOLEX.
Recommendation: Your doctor should monitor you for increased side effects and may need to lower your dose of tizanidine.
Epidiolex
Zanaflex
Epidiolex is a medicine that contains cannabidiol. It is used to treat seizures in people with certain conditions.
Tizanidine is a muscle relaxant. It is used to treat spasticity, which is when your muscles are tight or stiff.
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.
Tizanidine is used to treat spasticity in adults. Spasticity is a condition where your muscles become stiff or tight. This medicine helps to relax your muscles and reduce the stiffness. It can help you move and feel more comfortable.
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.
Tizanidine works by affecting certain chemicals in your brain. It is an alpha-2 adrenergic agonist. This action helps to reduce muscle spasms and tightness.
- • Feeling sleepy
- • Decreased appetite
- • Diarrhea
- • Changes in liver blood tests
- • Feeling tired or weak
- • Dry mouth
- • Sleepiness
- • Weakness
- • Dizziness
- Seizure 5,791
- Hospital stay 2,073
- Diarrhea 1,695
- Sleepiness 1,242
- Death 1,204
- Tiredness 1,693
- Aches 1,615
- Feeling sick to your stomach 1,530
- Falling down 1,318
- Head pain 1,289
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.
Tizanidine can cause low blood pressure, liver problems, and hallucinations. It can also make you very sleepy, especially if you drink alcohol or take other medicines that cause sleepiness. Your doctor should check your liver function before you start taking tizanidine and one month after you reach your highest dose. Do not stop taking tizanidine suddenly, as this can cause withdrawal symptoms.
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.
Tizanidine may harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if tizanidine passes into breast milk, so talk to your doctor if you are breastfeeding.
How to Read This cannabidiol vs tizanidine Comparison
cannabidiol is classified in the Cannabinoid (Anticonvulsant) drug class, while tizanidine sits within the Central Alpha-2 Agonist (Muscle Relaxant) 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 tizanidine has 7,445. 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 cannabidiol slows down the process your body uses to break down tizanidine, which can lead to higher levels of the drug in your blood.. 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 tizanidine - 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.