If you’re too high right now, the most important thing to know is that this will pass. No one has ever fatally overdosed on cannabis alone. Depending on whether you smoked or ate an edible, the intense part typically lasts between 30 minutes and 4 hours, and you will feel normal again. While you wait, there are several things that can genuinely help take the edge off.
How Long This Will Last
Your timeline depends entirely on how the cannabis got into your system. If you smoked or vaped, the effects hit within seconds to minutes, peak around 30 minutes, and generally fade over 2 to 6 hours. If you ate an edible, the onset can take 30 minutes to 2 hours, the peak may not arrive until 4 hours in, and the full experience can stretch up to 12 hours. Some residual grogginess can linger up to 24 hours either way.
Edibles are the most common reason people feel “too high” because the delayed onset tricks people into taking a second dose before the first one kicks in. If that’s your situation, you’re likely still climbing toward the peak. Knowing that the worst of it has a ceiling and a timer can itself reduce panic.
What to Do Right Now
Move to a comfortable, familiar space. Sit or lie down somewhere you feel safe. Turn down bright lights and loud music if they’re bothering you. Put on something calm or familiar on TV. These aren’t just comfort measures: reducing sensory input lowers the overall load on a brain that’s currently processing everything more intensely than usual.
Focus on your breathing. Slow, deliberate breaths (in through your nose for four counts, out through your mouth for six) activate your body’s built-in calming response. Anxiety and a racing heart are the most common unpleasant symptoms of being too high, and controlled breathing directly counteracts both.
Drink water. Dehydration makes dizziness and dry mouth worse, and sipping something cold gives you a simple physical task to focus on. Avoid alcohol, which intensifies THC’s effects and can make nausea and disorientation significantly worse.
Eat Something, Especially Something Sweet
THC can cause drops in blood sugar. In some cases, cannabis use has been linked to episodes of hypoglycemia with symptoms like sweating, dizziness, and feeling faint. Eating a snack, particularly one with simple sugars and some fat or protein, can help stabilize your blood sugar and settle your stomach. Crackers with peanut butter, a banana, toast with jam, or a handful of trail mix are all good options. You don’t need to force a full meal, just get something in your system.
Try Citrus: Lemonade or Orange Peel
This one sounds like folk wisdom, but it has real science behind it. A compound called limonene, found naturally in lemon and orange peel, has been shown to reduce THC-induced anxiety. A Johns Hopkins study tested vaporized limonene combined with THC in human participants and found it significantly lowered ratings of feeling anxious, nervous, and paranoid compared to THC alone. The effect was dose-dependent: more limonene meant less anxiety.
Importantly, limonene didn’t block the other effects of THC or produce side effects on its own. Squeezing fresh lemon into water, drinking lemonade, or even chewing on a piece of lemon peel won’t instantly sober you up, but it may meaningfully reduce the anxious, paranoid edge. The key ingredient is concentrated in the peel and rind, so zesting some into your drink gives you the most benefit.
Why Black Pepper Helps
Chewing on two or three whole black peppercorns is another remedy with a biological basis. Black pepper contains a compound called beta-caryophyllene, which interacts with the same receptor system that THC does but produces a calming, grounding effect rather than a psychoactive one. Many people report almost immediate relief from anxiety and paranoia. Just chew and sniff the peppercorns. Don’t swallow a handful; two or three is enough.
What’s Actually Happening in Your Brain
THC works by binding to receptors in your brain that normally respond to your body’s own internal signaling molecules. When THC plugs into these receptors, it partially activates them, which changes how your nerve cells communicate. This is why everything feels different at once: time perception shifts, sensory input gets amplified, thoughts loop, and your fight-or-flight response can fire without a real threat.
Your body is already working to clear THC from these receptors. With continued exposure, the receptors start pulling themselves off the cell surface and becoming less responsive. This is the same tolerance process that regular users experience over weeks, but a version of it begins during a single session. Your brain is actively recalibrating even while you feel overwhelmed.
Ibuprofen May Help With Mental Fog
Research published in Cell found that THC triggers an inflammatory enzyme in the brain, and this enzyme is directly responsible for some of the cognitive impairment (foggy thinking, memory difficulty) that comes with being high. When researchers blocked this enzyme using common anti-inflammatory drugs, the memory and cognitive problems were significantly reduced without blocking THC’s other effects.
A standard dose of ibuprofen works on this same pathway. It won’t make you feel sober, but it may help clear some of the mental fog and reduce the feeling that your brain isn’t working properly. If you have ibuprofen on hand and no reason to avoid it (like stomach ulcers or kidney issues), it’s a reasonable option.
What Not to Do
Don’t consume more cannabis, even if someone suggests that CBD flower will “cancel it out.” While CBD does act as a modifier on the receptor system, the ratio and timing needed to meaningfully counteract THC in the moment aren’t well established, and inhaling more smoke when you’re already uncomfortable often makes things worse psychologically. CBD taken in isolation (like a tincture or capsule) may help with anxiety, but the effects take time and won’t dramatically shorten your high.
Don’t take a shower if you’re feeling dizzy or disoriented, since the combination of heat and impaired balance creates a fall risk. Don’t drive anywhere. Don’t drink coffee thinking it will sober you up; caffeine can increase your heart rate and amplify anxiety. And don’t fight the experience with panic. Reminding yourself “I took a substance, this is temporary, I am safe” is one of the most effective tools available.
Signs That Need Medical Attention
Cannabis alone is extremely unlikely to cause a medical emergency in adults, but certain situations warrant a call for help. If you experience chest pain that doesn’t resolve with calm breathing, if you can’t stop vomiting, or if you feel like you’re going to pass out and can’t stay conscious, call 911 or your regional poison control center at 1-800-222-1222. Children who accidentally consume THC products are at much higher risk and should receive medical attention immediately, as they can develop serious breathing and coordination problems.
If what you consumed wasn’t from a regulated source, or if you suspect it contained something other than cannabis, treat it as a potential poisoning and seek help without hesitation.