A cannabis high will pass on its own, but there are real things you can do right now to feel more comfortable and shorten the worst of it. How long you need to wait depends on how you consumed it: smoking or vaping typically peaks within 30 minutes and fades over a few hours, while edibles can take up to 4 hours to fully peak and last up to 12 hours. Either way, the strategies below can help you ride it out.
How Long You’re Actually Dealing With
If you smoked or vaped, you likely felt the effects within seconds to minutes. The peak hits around the 30-minute mark, and the main effects wind down within about 6 hours. That means if you’re already past the peak, the intensity is on its way down even if it doesn’t feel like it yet.
Edibles are a different story. They can take 30 minutes to 2 hours before you feel anything, which is why people sometimes eat more and end up far higher than intended. Peak effects from edibles can build for up to 4 hours, and the whole experience can stretch to 12 hours. Some residual grogginess or brain fog can linger up to 24 hours with either method. Knowing where you are on this timeline can itself be reassuring: your body is actively processing and clearing the THC the entire time.
Calm Your Nervous System First
The most distressing part of being too high is usually the anxiety, racing thoughts, or paranoia. These feel overwhelming in the moment, but they respond well to simple grounding techniques that pull your attention out of your head and back into your physical surroundings.
Try the 5-4-3-2-1 method: name 5 things you can see, 4 things you can touch, 3 things you can hear, 2 things you can smell, and 1 thing you can taste. Don’t overthink it. A book on a shelf, the texture of your couch, the hum of a refrigerator. The point is to anchor your brain to what’s real and immediate instead of letting it spiral.
If that feels like too much, go even simpler. Count to 10 slowly, or recite the alphabet. If you get to the end and still feel tense, do it backward. This works because it gives your brain a concrete, manageable task that interrupts the loop of anxious thoughts.
Controlled breathing also helps significantly. Try box breathing: inhale for 4 counts, hold for 4, exhale for 4, hold for 4, and repeat. Focus on the sensation of air moving through your nostrils or your belly rising and falling. This activates your body’s natural calming response and can slow a racing heart.
Physical grounding works too. Squeeze your fists tightly, grip the edge of a table, or hold an ice cube. Giving that anxious energy somewhere physical to land can genuinely make you feel lighter. And remind yourself out loud if you need to: “I am safe. This is temporary. This will pass.” It sounds simplistic, but speaking reassuring words to yourself as if you were comforting a friend can interrupt panic before it escalates.
What to Eat and Drink
Water is your first move. Dehydration makes the unpleasant side effects of THC worse, especially dry mouth, dizziness, and headache. Sip water or a non-caffeinated drink steadily. Avoid alcohol, which intensifies the high rather than counteracting it.
There’s clinical evidence that limonene, a compound found in citrus fruits, can reduce THC-related anxiety. A study from Drexel University tested vaporized limonene alongside THC and found that combining the two significantly reduced anxiety, nervousness, and paranoia in participants. The most effective dose in the study was higher than what you’d get from sniffing a lemon, but the researchers noted it as one of the first clinical demonstrations that terpenes can genuinely modify a THC experience. Chewing on lemon peel, sniffing fresh citrus, or drinking lemon water is low-risk and worth trying.
Eating a snack, particularly something starchy or sugary, can also help. Food won’t eliminate the high, but it can ease nausea and give your body something else to metabolize. Some people swear by black peppercorns (chewing a few or sniffing ground pepper), which contain another terpene called beta-caryophyllene that may interact with the same receptor system as THC, though the evidence for this is more anecdotal.
Change Your Environment
If you’re too high, sensory input can feel overwhelming. Bright lights, loud music, crowded rooms, and fast-moving screens all feed into anxiety and paranoia. Move to a quieter, dimmer space if you can. Lie down somewhere comfortable. Put on something calm and familiar, whether that’s a show you’ve seen a dozen times, gentle music, or nothing at all.
Fresh air helps. Even stepping outside for a few minutes or opening a window can shift how you feel. A cool washcloth on your forehead or the back of your neck provides an immediate sensory reset. A shower (warm, not hot) can also be grounding, as the sensation of water gives your brain something neutral to focus on.
If you’re with people who are making the experience worse, it’s completely fine to remove yourself. Go to another room, put in headphones, or ask a trusted friend to sit with you quietly.
What to Avoid
Don’t consume more cannabis, even if someone tells you CBD will cancel it out. While CBD may slightly moderate THC’s effects, the risk of making things worse outweighs the benefit when you’re already in distress. Don’t drink caffeine, which can amplify a racing heart and anxiety. And don’t try to “sleep it off” by taking sedatives or mixing in other substances.
Try not to fixate on your heart rate. THC raises your heart rate, and that’s normal. Feeling your pulse pounding and then panicking about it creates a feedback loop. If your heart is racing, the breathing techniques above are the most effective way to bring it down.
When It’s More Than Discomfort
The vast majority of “too high” experiences are deeply unpleasant but not medically dangerous. However, there are situations that warrant calling for help. Emergency medical guidelines flag a few specific warning signs: significant confusion or inability to respond normally, multiple seizures, or vital signs that stay abnormal (very rapid heart rate that doesn’t come down with rest, for instance). If someone is unresponsive, seizing, or experiencing chest pain, that’s a 911 call.
For everything short of that, time and comfort are the treatment. Emergency departments typically monitor patients until symptoms fade and vital signs stabilize, then send them home. There’s no medical antidote for THC. The ER can help with severe panic or dangerous physical symptoms, but for a bad high that’s “just” anxiety and discomfort, you’ll recover faster in a safe, familiar environment using the strategies above.