There’s no way to instantly flush THC from your system, but you can make the experience shorter, less intense, and more manageable. Most of the discomfort from being too high comes from anxiety, paranoia, and physical unease, and those symptoms respond well to simple interventions while you wait for the high to pass naturally.
How long that wait lasts depends on how you consumed cannabis. If you smoked or vaped, effects peak within about 10 minutes and typically fade over one to three hours. Edibles are a different story: peak concentrations don’t hit until two to four hours after eating, and the high can last six hours or longer. Knowing which timeline you’re on helps you set realistic expectations for when you’ll start feeling normal again.
Why Edibles Hit Harder and Last Longer
When you inhale cannabis, THC enters your bloodstream through the lungs almost immediately, producing a rapid but relatively short-lived peak. Edibles take a slower, more winding route. Your liver processes the THC before it reaches your brain, and that metabolism actually converts it into a more potent form. The tradeoff is that your body absorbs far less of the total dose (bioavailability can be as low as 6%), but what does get through hits harder and sticks around longer.
This matters because if you’re too high from an edible, you may still be on the way up. The strategies below still help, but your timeline to feeling better is measured in hours, not minutes.
What Actually Helps Right Now
Start with the basics. Find a calm, safe space where you can sit or lie down. Dim the lights if they bother you. Put on familiar, low-key music or a comfort show. These aren’t just distractions. Sensory overstimulation feeds the anxiety loop that makes a high feel unbearable, and reducing input genuinely brings the intensity down.
Eat something. Cannabis can lower blood sugar, and symptoms of low blood sugar (dizziness, sweating, feeling faint, rapid heartbeat) overlap heavily with the symptoms of being too high. A snack with simple carbohydrates, like crackers, bread, fruit, or juice, can ease those physical symptoms quickly. Staying hydrated matters too: water or a sports drink will help with dry mouth and the general foggy feeling.
Controlled breathing works faster than you’d expect. Breathe in for four counts, hold for four, out for four. This directly counteracts the racing heart and shallow breathing that come with cannabis-induced anxiety. It won’t end the high, but it can break the cycle of panic feeding more panic.
A cold washcloth on your face or the back of your neck provides a mild shock to your nervous system that can pull you out of a spiral. Some people find that a shower helps for the same reason.
Black Pepper, Lemon, and Other Folk Remedies
You’ve probably seen advice to sniff or chew black peppercorns when you’re too high. The idea comes from a compound called caryophyllene, a terpene found in black pepper, rosemary, and lavender, which has been linked to anxiety reduction in animal studies. But there are no clinical trials proving this works for cannabis-induced anxiety in humans. As one researcher at Johns Hopkins put it, even if the mechanism were proven, it’s unclear how many peppercorns you’d need to eat, and eating that many would be “very unpleasant.”
Lemon has a slightly stronger case. A 2024 study from Johns Hopkins gave 20 adults vaporized THC alongside varying doses of limonene, the terpene responsible for citrus scent. At the highest dose tested, limonene significantly reduced self-reported feelings of anxiety and paranoia compared to THC alone, without changing the other effects of the high. Importantly, limonene didn’t alter how THC was processed in the body. It specifically targeted the anxious component. The catch: participants inhaled a concentrated, vaporized dose of limonene, which is very different from sniffing a lemon peel. Still, squeezing lemon into water or smelling fresh citrus is harmless and may take the edge off.
Neither remedy will sober you up. At best, they may reduce anxiety while the THC runs its course.
What About CBD?
CBD is often suggested as a THC antidote, and there’s a plausible biological basis. CBD appears to modify how THC interacts with the brain’s cannabinoid receptors, likely by binding to a different site on the same receptor and changing how it responds. Think of it as turning down the volume on the signal THC sends rather than blocking it entirely.
In practice, the picture is messier. The interaction depends on the ratio of CBD to THC, the timing, and how both were consumed. Taking CBD after you’re already high is unlikely to produce a dramatic, rapid change. If you have a CBD tincture or oil on hand, it’s worth trying, but don’t expect it to flip a switch.
What Not to Do
Don’t drink alcohol. Alcohol increases THC absorption and will almost certainly make you feel worse. Don’t consume more cannabis, even if someone suggests a different strain will “balance you out.” Don’t drive or operate anything dangerous. Don’t try to force yourself to sleep with other sedatives.
Caffeine is a mixed bag. A small amount of coffee might help you feel more alert, but caffeine also raises your heart rate and can worsen anxiety. If your main symptom is racing thoughts or panic, skip it.
How to Ride It Out
Remind yourself of the timeline. If you smoked, the worst will pass within an hour or two. If you ate an edible, you may need three to five hours before you feel substantially better, but the intensity will plateau and then gradually decline. No one has ever died from a cannabis overdose. The experience is deeply uncomfortable but not dangerous for the vast majority of people.
If you can, talk to someone you trust. Having another person calmly reassure you that you’re fine and that this will end is one of the most effective interventions there is. If you’re alone, some people find it helpful to write themselves a note: “You took too much. You are safe. This is temporary.” Read it when the anxiety loops back around.
Sleep is the best exit if you can manage it. Lie down in a dark room, put on a podcast or ambient sound at low volume, and let yourself drift. Many people wake up feeling mostly normal, if a little groggy.
When the Situation Is Serious
Most bad highs are just uncomfortable, not medically dangerous. But some symptoms do warrant emergency help. Call 911 or go to an emergency room if you or someone with you experiences chest pain, trouble breathing, a very fast or irregular heartbeat, an inability to wake up, or severe confusion that goes beyond typical fogginess. Hallucinations (seeing or hearing things that aren’t there) and temporary psychotic symptoms can occur with very high doses and also merit professional evaluation.
You can also call Poison Control at (800) 222-1222 for free, confidential guidance if you’re unsure whether what you’re experiencing needs medical attention.