Start with 5 mg THC or less

For a first RSO trial, use no more than 5 mg THC. People who have never used edible cannabis, older adults, and anyone sensitive to THC should consider 2.5 mg THC or less. RSO, or Rick Simpson Oil, is a concentrated cannabis extract. A rice-grain amount can contain 25 mg THC or more, so it is not a small starting dose.

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RSO potency varies by batch. Read the label for total THC per gram or per milliliter before you divide a dose. If the label is missing or unclear, do not guess. This guide is general harm reduction, not medical advice.

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Prerequisites

  • Legal age and local purchase rules confirmed.
  • Product label with total THC and total weight or volume.
  • Syringe markings or a gram scale accurate to 0.01 g.
  • A sober adult present for a first trial.
  • No alcohol, sedatives, or driving during the trial.

Steps to start small

  1. Check the RSO package for total THC and total product weight or volume.
  2. Write down the calculated amount for a 5 mg THC dose.
  3. Place the measured 5 mg THC amount on a spoon with peanut butter or another fatty food.
  4. Take the full 5 mg dose at one time.
  5. Set a timer for 2 hours.
  6. Record the time, dose, and any effects in a note.
  7. Wait at least 2 hours before judging the dose.
  8. Take no more RSO during the first trial.
  9. Repeat the same dose on a later day before you increase it.
  10. Increase by 2.5 mg THC only after a clear, comfortable result.

Dose math example

A 1 g syringe labeled 70% THC contains about 700 mg THC. A 5 mg dose is about 0.007 g, or 7 mg of oil. A 2.5 mg dose is about 0.0035 g. Use the label, not a rice grain, for this math.

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What to expect

Edible cannabis can take 30 to 120 minutes to produce effects. Peak effects may arrive later. Dizziness, dry mouth, anxiety, rapid heartbeat, and nausea can occur. If someone has severe symptoms, call Poison Control at 1-800-222-1222 in the US. For emergency symptoms, call 911.

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Who should not start RSO alone

Talk with a clinician before use if you are pregnant or breastfeeding, have heart disease, take prescription sedatives, have a history of psychosis, or use cannabis for the first time. Do not give RSO to children. Store it locked and labeled.