Can you use cannabis and alcohol together?
Yes, it is possible, but the combination is riskier than using either substance alone. Alcohol and cannabis both slow the central nervous system, both impair coordination and reaction time, and together they produce stronger impairment than either one by itself. Public health agencies consistently report that people who use both are more likely to drive while impaired and to have a harder time judging how intoxicated they are. The practical answer: treat the two as a single decision, not two separate ones.
Cannabis and Drinking Together: What You Need to Know
What the research shows
- Combined use increases sedation, dizziness, and nausea compared with either substance alone.
- Both substances impair balance, motor control, and reaction time, and the deficits compound.
- Cannabis can mask how drunk a person feels, which leads to drinking more than intended.
- Both raise heart rate, which matters for people with cardiovascular conditions.
- Alcohol and cannabis both affect the liver, and frequent combined use adds stress to that organ.
Where CBD fits, and where it does not
CBD is not a sobering agent. There is no evidence that CBD reverses alcohol impairment, lowers blood alcohol content, or makes driving safe. CBD can cause drowsiness and dizziness on its own, and those effects stack with alcohol. CBD also competes for liver enzymes in the CYP450 family, the same system that clears alcohol and many medications, so timing matters. If you take prescription drugs, check with a pharmacist before adding CBD to a night that includes drinking. Buy only products with a current certificate of analysis from an independent lab so you know the actual cannabinoid content.
Before you start
- Confirm the legality of both substances in your state and setting.
- Review your medications for sedatives, blood thinners, or liver-metabolized drugs.
- Read the lab report on any CBD or cannabis product you plan to use.
- Arrange a sober ride home in advance.
How to lower risk if you use both
- Choose one substance per occasion when you can. Alternate nights rather than stacking them.
- If you do combine, cut the dose of each. Use roughly half of what you would take alone.
- Drink alcohol first and wait before adding cannabis, or reverse the order, so you can feel each effect on its own.
- Eat a meal and drink water between servings to slow absorption.
- Skip high-THC concentrates and edibles on drinking nights. Their delayed onset makes dose control harder.
- Cap the total. Set a number of drinks and a number of cannabis servings before you start and stop at that line.
- Keep a sober person present if the setting is unfamiliar or the group is large.
- Do not drive, cycle, or operate equipment for the rest of the night, and plan for effects to linger into the morning.
Who should skip the combination
- Anyone under 21, and anyone pregnant or breastfeeding.
- People with heart conditions, liver disease, or a history of substance use disorder.
- People taking sedatives, opioids, sleep aids, or antidepressants.
- Anyone driving, working, or caring for dependents later that day.
Talk to a clinician when
Get medical advice if you use both substances more than once a week, if you need either one to sleep or to socialize, or if you have had a blackout or a fall while combining them. A clinician can review your medications for interactions and screen for dependence. If you feel you cannot cut back, that is a reason to ask for help, not a reason to wait.