Most adults should start with 2.5 mg of THC or 10 to 25 mg of CBD in a single gummy, then wait a full two hours before taking more. Those are two different scales, and they don't translate. A 5 mg THC gummy can feel strong to a first-timer. A 25 mg CBD gummy often feels like not much at all. The number on the package only means something once you know which cannabinoid you're counting and how your own body handles it.
Quick starting ranges
- THC, first time: 2.5 mg, which is half of a standard 5 mg gummy.
- THC, occasional use: 5 mg. Many legal states cap a single serving at 5 or 10 mg, and that cap is not arbitrary.
- THC, regular tolerance: 10 mg. Most of the rough nights I hear about start above this line.
- CBD, general use: 10 to 25 mg, once or twice a day.
- CBD, higher end: 25 to 50 mg. Some people go well above that, but move up in small steps over a week or two, not overnight.
Why edibles don't behave like a vape or a joint
Inhaled cannabis gets into the blood in minutes. A gummy has to travel through your stomach and liver first, and the liver converts THC into a compound called 11-hydroxy-THC, which is more potent and hangs around longer. Edibles typically take 30 to 120 minutes to show up, and the peak can land at the two or three hour mark. Effects can linger six to eight hours, sometimes longer the next morning.
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That delay is the whole problem. Someone takes 5 mg, feels nothing at 40 minutes, takes another 15 mg, and then both doses arrive together. Now they're on the couch for four hours convinced the room is tilting. Set a timer. Do not redose before it goes off.
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CBD gummies follow different math
CBD doesn't get you high, and there's no official standard dose. The FDA has not approved CBD for general use, and the only prescription version, Epidiolex, is dosed by body weight in the hundreds of milligrams, which tells you almost nothing about what belongs in a gummy. Published research has used anywhere from 5 mg to 600 mg a day for different reasons. That's a wide range, so treat the label as a starting point, not a prescription.
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One practical note: full-spectrum CBD may contain trace THC, usually under 0.3% by dry weight. A single gummy won't intoxicate most people, but a handful of them taken daily could show up on a drug test. If you're tested at work, look for THC-free or isolate-based products.
How I'd work out your dose
- Read the milligram count per piece, not per package. A bag that says 300 mg might hold 30 gummies at 10 mg each, or 10 gummies at 30 mg each.
- Check the serving size. Some labels call half a gummy a serving. Do that math before you bite.
- Pick a free evening. No driving, no work calls, no childcare duty.
- Eat normally. A fatty meal slows absorption and can make the hit feel stronger when it lands. A totally empty stomach speeds it up. Either is fine, just stay consistent so you can compare.
- Write down the dose and the time. Notes on your phone work. Memory does not.
- Wait two hours, then decide. If the effect is too much, wait it out. If it's too little, add 2.5 mg next time, not 10.
Things that shift the number
Body weight matters, but not as much as people assume. Tolerance, liver enzymes, and how often you use matter more. Alcohol and sedatives stack with THC and turn a mild dose into a heavy one. Sleep, stress, and whether you've eaten all move the experience around too. This is why the same 5 mg gummy feels different on a Tuesday night versus a Saturday afternoon.
Mistakes worth avoiding
- Assuming a cut gummy is even. Splitting a piece doesn't guarantee half the cannabinoids in each half. Buy low-dose pieces instead of carving up a strong one.
- Treating hemp-derived gummies as THC-free. Delta-8 and hemp-derived delta-9 products can absolutely intoxicate, and the milligram labels vary by brand.
- Redosing at 45 minutes. See above. The first dose hasn't finished arriving.
- Leaving the bag on the counter. Edible poisonings in kids have climbed along with legal sales. Lock them up.
- Skipping the lab test. A gummy is only as good as its certificate of analysis. Look for batch-level testing on cannabinoid content and contaminants.
When to skip it
Skip THC if you're under 21, pregnant or breastfeeding, driving, or new to cannabis and alone for the first time. Skip it if your job tests and you can't risk a positive. For CBD, check with a pharmacist if you take blood thinners, seizure medication, or anything with a grapefruit warning, since CBD can interfere with how those drugs are metabolized.
What to check on the label
Milligrams per piece. Cannabinoid profile. Batch number and a matching lab report. A harvest or expiration date. A clear statement of whether THC is present. If a brand can't show you a certificate of analysis for the batch in your hand, that's your answer about how seriously they take dosing.