How to Microdose Cannabis Without Getting High

The short answer

A microdose is a THC amount below the level that causes a noticeable high. For most adults that is 1 mg to 2.5 mg of THC per dose. Stay at or below 2.5 mg, wait at least 2 hours before adding more, and pick a method with a slow, measurable delivery.

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What counts as a microdose

The threshold dose varies by person. Low-dose THC studies use 1 mg to 5 mg. At 1 mg to 2.5 mg, most people report no euphoria, no racing thoughts, and no loss of coordination. Regular consumers may need 2.5 mg to 5 mg to feel anything, because tolerance shifts the threshold.

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High-CBD flower with THC at or below 1 percent is another option. One small inhalation from that flower delivers less than 1 mg of THC for many users. CBD does not block THC, but it can change the feel of a dose.

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Starting doses by method

• Inhalation, flower or vape: 1 inhalation, about 1 mg to 2 mg THC absorbed. Wait 15 minutes before adding more.
• Low-dose edibles: 1 mg to 2.5 mg THC. Wait 2 hours. Onset runs 30 to 120 minutes. Effects last 4 to 8 hours.
• Tincture or oil: 0.25 mL to 0.5 mL of a low-concentration product. Hold under the tongue for 60 to 90 seconds.
• Capsule: 1 mg to 2.5 mg THC, swallowed with food.
• Topical: acts at the application site for most users. Little THC reaches the bloodstream.

How to start

1. Buy a product with a printed THC number per unit or per mL. Skip anything without a label.
2. Take 1 mg. Use a measured dropper or a scale, not a guess.
3. Write down the time, dose, and method.
4. Wait 2 hours for edibles, 15 minutes for inhalation.
5. Rate effects from 0 to 10 at 30, 60, 120, and 240 minutes.
6. Repeat the same dose on 3 separate days before increasing.
7. Increase by 0.5 mg to 1 mg at a time.

What pushes a microdose into a high

• Eating more than one serving. A 10 mg edible cut into 4 pieces is 2.5 mg per piece, and a cut that misses is more.
• Redosing before the first dose peaks.
• Alcohol. Drinking within 2 hours of a dose raises THC blood levels.
• An empty stomach. Edibles hit faster without food.
• High-THC flower. A 25 percent strain holds 2.5 mg of THC in every 10 mg of flower.
• A new batch at the same dose. Label accuracy varies between batches.

In Canada, edibles are capped at 10 mg of THC per package. Several US states set 10 mg as the maximum single serving.

Signs you took too much

Dry mouth, fast heart rate, anxiety, nausea, and a sense of unreality appear within 30 to 90 minutes for edibles. Nothing reverses THC. Sit down, drink water, and wait. Symptoms ease over 2 to 6 hours. Call a poison control line if chest pain or vomiting starts.

Effect varies with body weight, liver enzymes, and frequency of use. Some people do not find a dose with zero effects. Stop increasing if a dose produces any change you do not want.