There is no reliable way to instantly end a cannabis high, but several strategies can reduce its intensity and help you feel more in control while your body processes the THC. How long you need to wait depends on how you consumed it: inhaled cannabis peaks within about 30 minutes and its main effects can last up to 6 hours, while edibles can take up to 4 hours to peak and last up to 12 hours. Residual grogginess from either method can linger up to 24 hours.
The most important thing to know right now: what you’re feeling will pass, and a cannabis high alone is not dangerous for most healthy adults. Here’s what you can do in the meantime to take the edge off.
Try Black Pepper or Citrus
This one sounds strange, but it has a real basis in chemistry. Black pepper contains a compound called caryophyllene, a terpene associated with reducing anxiety symptoms. Chewing on a few whole black peppercorns or simply sniffing freshly ground black pepper is a widely reported trick for easing weed-related paranoia. The human clinical evidence is still limited, and most formal research has been in animals, but pharmacologists who study cannabis consider the mechanism plausible enough to recommend trying it.
Citrus may work through a similar pathway. A compound called d-limonene, found in lemon and orange peel, was tested at Johns Hopkins alongside THC in a controlled human study. Participants who inhaled d-limonene with THC reported significantly less anxiety and paranoia than those who received THC alone, and the effect got stronger at higher doses of d-limonene. Notably, the limonene didn’t dull the other effects of THC or produce any side effects of its own. Try chewing on a lemon wedge (rind included), zesting a lemon into water, or sniffing lemon peel. The terpene is concentrated in the skin, not the juice.
Eat Something Substantial
Having food in your stomach can help stabilize how you feel during a high, especially if you haven’t eaten recently. Low blood sugar can amplify feelings of dizziness, shakiness, and anxiety, all of which overlap with the uncomfortable side of being too high. A meal or snack with carbohydrates and some fat gives your body something else to metabolize and can ground you physically. Toast with peanut butter, crackers with cheese, or a banana are all good options. Eating won’t speed up THC clearance from your system, but it addresses the secondary discomfort that makes a strong high feel worse than it is.
Cold Water and Deep Breathing
Splashing cold water on your face or holding an ice cube in your hand activates your body’s dive reflex, which slows your heart rate and pulls your nervous system out of fight-or-flight mode. This is especially helpful if your heart is racing, one of the most common and most frightening symptoms of being too high. THC can cause your heart to beat faster or irregularly, and while this is usually harmless in healthy people, it feeds the cycle of anxiety.
Slow, deliberate breathing works on the same system. Inhale for four counts, hold for four, exhale for six. This shifts your body from its stress response toward a calmer baseline. Even a few minutes of focused breathing can meaningfully reduce the feeling of panic.
Change Your Environment
A lot of what makes a strong high unbearable is psychological rather than purely chemical. Moving to a different room, stepping outside for fresh air, or turning off whatever music or show is playing can interrupt the loop of anxious thoughts. Overstimulation makes everything worse when you’re too high. A quiet, comfortable space with dim lighting is ideal.
If you’re with people who are making you anxious, it’s fine to step away. Lie down if you feel dizzy. Put on something familiar and calm, like a show you’ve seen before, to give your brain a low-effort anchor. Some people find that a warm shower helps reset their sensory experience, though you should sit down in the shower if you feel unsteady.
What Probably Won’t Work
Coffee is a common instinct, but caffeine can increase your heart rate and heighten anxiety, which is the opposite of what you need. Exercise is sometimes suggested, but if you’re uncomfortably high, physical exertion can spike your heart rate further and make dizziness worse. CBD has theoretical potential to counteract some THC effects, but the timing and dosing required make it impractical as a rescue remedy in the moment.
Sleep is genuinely one of the best options if you can manage it. You won’t sober up faster in a pharmacological sense, but you’ll skip the unpleasant part of the experience. If sleep isn’t possible, rest with your eyes closed and focus on breathing.
Edibles Take Much Longer to Fade
If you ate a cannabis edible, the timeline is significantly different from smoking or vaping. Inhaled THC is already declining from its peak within an hour or two, but edibles are processed through your liver, which converts THC into a more potent form. Effects can take up to 4 hours to fully peak, meaning you may still be on the way up even if it’s been a while since you ate it. The total duration can stretch to 12 hours.
This is why the most common edible mistake is taking more because you “don’t feel anything yet.” If that’s what happened, know that you’re in for a longer ride, but the same strategies above still apply. Eat other food to slow further absorption, stay hydrated, and settle into a comfortable spot. The intensity will plateau and then gradually decline.
Signs That Need Medical Attention
Most cannabis overconsumption is deeply uncomfortable but not medically dangerous. However, a few symptoms warrant calling for help: chest pain, a heart rate that feels extremely fast or irregular for a sustained period, uncontrollable vomiting that prevents you from keeping water down, or fainting. These are rare, but they’re real. If someone is unresponsive or having difficulty breathing, call emergency services. You will not get in trouble for seeking medical help.