A cannabis microdose is an amount small enough that the user does not feel intoxicated. Common ranges in user reports: 0.5 to 2.5 mg THC, or 5 to 20 mg CBD. No health agency sets a standard microdose. Controlled studies on the practice are scarce.

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THC microdose ranges by route

  • Smoked flower at 15% THC: 1 to 2 puffs, about 0.5 to 1 mg THC.
  • Vape cartridge: one draw of 2 seconds, about 0.5 to 1.5 mg THC.
  • Oral tincture: 0.5 to 2.5 mg THC.
  • Edible: 1 to 2.5 mg THC per serving. Many US states cap one serving at 10 mg and one package at 100 mg.

CBD microdose ranges

CBD doses run higher in milligrams because CBD does not bind CB1 receptors and does not produce a high. Common user amounts: 5 to 20 mg per session. Some people take 25 to 50 mg for sleep or anxiety. Clinical evidence for those amounts is mixed.

How to Do Cannabis Microdosing

Steps

  1. Buy one product with a batch certificate of analysis that lists THC and CBD in mg per serving.
  2. Record a baseline: sleep hours, pain score, anxiety score.
  3. Start at 0.5 mg THC or 5 mg CBD. One session per day at most.
  4. Wait. Inhaled effects appear in 5 to 15 minutes. Oral effects appear in 30 to 120 minutes and peak at 2 to 4 hours.
  5. Do not redose until the full onset window passes. Redosing after 30 minutes is a common cause of a bad reaction with edibles.
  6. Raise the amount by 0.5 mg THC or 5 mg CBD after two sessions with no effect.
  7. Stop raising when you notice a psychoactive effect. That point is your threshold. Stay below it.
  8. Log dose, time, route, effect, and duration.
  9. Keep sessions to 2 or 3 days per week to limit tolerance.

Why edible doses take time

The liver converts THC to 11-hydroxy-THC during first-pass metabolism. That metabolite is more potent than THC. Onset for edibles ranges from 30 to 120 minutes, and effects can last 4 to 6 hours. THC from smoked or vaped cannabis reaches the brain in seconds.

guide to cannabis microdosing

Risks

  • Any THC dose can appear on a blood test and can impair driving. Most US states have no legal limit for THC in blood.
  • Higher amounts can cause anxiety, paranoia, a faster heart rate, and dizziness.
  • About 3 in 10 people who use cannabis develop cannabis use disorder, per NIDA.
  • THC and CBD interact with CYP450 enzymes. Ask a pharmacist if you take warfarin, clobazam, or other drugs.
  • CDC advises against cannabis in pregnancy and breastfeeding. No safe amount is established.

Label checks

Look for potency in mg per serving, not percent. Confirm the package lists a batch or lot number, a test date, and results for pesticides, heavy metals, solvents, and microbials. Hemp-derived CBD sold online is regulated as a supplement in most cases. FDA does not verify potency claims before sale.

how to do cannabis microdosing

What is not known

No trial has defined a microdose of cannabis. Dose ranges come from user reports and small studies. Long-term effects of repeated low-dose THC are not established. Microdosing is not a treatment for any condition, and it does not replace medical care.