For a first cannabis oil session, start with 1 mg to 2.5 mg of THC, note the time, and wait two hours before taking more. Oil taken by mouth absorbs through the stomach and liver, so the high starts later and lasts longer than smoking or vaping. Pick a free evening, keep water and snacks nearby, and do not drive.

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What counts as cannabis oil

Cannabis oil covers several products: THC distillate, full spectrum extract, CBD oil, and tinctures sold in dropper bottles. Labels list milligrams of THC and CBD per milliliter and per bottle. Check the batch test results before you buy, since potency on the label does not always match the bottle.

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Before your first dose

How to take cannabis oil

  1. Read the label on the bottle.
  2. Write down the mg of THC per mL.
  3. Set your starting dose at 1 mg to 2.5 mg of THC.
  4. Shake the bottle.
  5. Fill the dropper to the line that matches your dose.
  6. Place the oil under your tongue.
  7. Hold it there for 60 to 90 seconds.
  8. Swallow.
  9. Record the time and the dose.
  10. Wait two hours before a second dose.

Holding oil under the tongue sends some THC through the mouth lining, so effects can start in 15 to 45 minutes. Swallowing the oil sends it through the liver, which slows onset to 30 to 120 minutes and can make the effect stronger.

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Dosing ranges

Onset and duration

Most people feel oral THC between 30 minutes and two hours after a dose. The peak lands around two to four hours, and effects fade over six to eight hours. CBD may soften some of the edge of a THC high, but it does not cancel it. A heavy meal before or after a dose can shift the timing.

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If you take too much

Storage and labeling

Keep oil in the original dark bottle, capped, at room temperature, away from heat and light. Store it out of reach of children and pets, since oil is easy to swallow and a child sized body reacts to small amounts of THC. Write the open date on the label. Discard oil that smells rancid or has changed color.

When to ask a doctor first

Talk to a clinician before trying cannabis oil if you take blood thinners, seizure drugs, or antidepressants, or if you have heart disease, a history of psychosis, or you are pregnant or breastfeeding. Cannabis can interact with prescription drugs and change how your liver breaks them down.