Short answer
Most THC seltzers sold in the United States contain 2.5 mg to 10 mg of THC per can. Five milligrams is the most common single-can dose, and 10 mg is the ceiling for one serving in states that regulate cannabis drinks the same way they regulate edibles. Low-dose cans at 2 mg to 2.5 mg are built for people who want a mild effect or want to sip more than one can over an evening.
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Typical THC amounts by can size and product type
- 2 mg to 2.5 mg: light dose, common in session-style seltzers meant to be paced like beer.
- 5 mg: the standard single serving in most regulated adult-use markets.
- 10 mg: the upper limit for one serving under state edible rules.
- Above 10 mg: sold as multi-serving cans, usually scored or marked so the can can be divided.
Hemp-derived seltzers, the kind sold outside dispensaries in many states, tend to sit at 3 mg to 5 mg of delta-9 THC per 12 ounce can. Dispensary brands often run 5 mg to 10 mg in the same can size, so the same volume does not mean the same dose.
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Seltzer THC versus edible THC
A 5 mg seltzer and a 5 mg gummy carry the same amount of THC. The difference is timing, not strength. Because a drink is already dissolved and emulsified, it starts absorbing through the mouth and stomach lining within minutes. A gummy has to travel to the gut and through the liver first.
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Why drinks come on faster
Most people feel a seltzer in 15 to 30 minutes, compared with 30 to 120 minutes for a chewed edible. Peak effects land around 1 to 2 hours, and the whole thing usually clears in 2 to 4 hours. That shorter arc is the main reason drinks have pulled ahead of gummies for social use: the feedback loop is fast enough to self-correct.
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How to read a seltzer label
- Find total THC per container, not per serving. A 10 mg can labeled as two servings is a 5 mg pour.
- Check milligrams per fluid ounce. A 5 mg dose in an 8 ounce can hits harder per sip than 5 mg in a 16 ounce can.
- Confirm whether the THC is cannabis-derived or hemp-derived, since hemp products are not held to the same state testing rules.
- Look for a batch or test date. Potency can drift between production runs.
How to choose a starting dose
- Start at 2.5 mg if you have never used THC in any form.
- Drink the full can over 15 to 20 minutes instead of finishing it in one go.
- Wait a full 60 minutes before deciding whether you want more.
- Cap your first session at 5 mg total, including anything else you have consumed.
- Keep the can or a photo of the label so you can repeat or avoid that dose next time.
Do not treat a seltzer like a beer when you are planning the rest of your night. There is no standard drink equivalent for THC, and the alcohol you pair with it will affect how the dose lands.