There is no universal medical cannabis dosage chart. Clinical guidance consistently points to a start-low, go-slow approach, often beginning with 1 to 2.5 mg of THC per dose for people new to cannabis and increasing only after observing effects. CBD doses are often started lower and adjusted based on the condition and product.
Is there a standard medical cannabis dosage chart?
No. Dosing depends on THC and CBD content, route, tolerance, body weight, age, medications, and the condition being treated. Regulators and clinicians publish ranges, not one-size-fits-all charts.
What is a common starting dose for THC and CBD?
Many clinicians suggest 1 to 2.5 mg THC per dose for beginners, with total daily THC kept low at first. CBD is often started at 5 to 25 mg per day and increased under supervision, though some conditions studied use much higher amounts.
- THC: 1 to 2.5 mg per dose, then wait 1 to 2 hours after inhalation or 2 to 4 hours after oral use before adding more.
- CBD: 5 to 25 mg per day as a starting range; higher doses require clinical guidance.
- Balanced products: treat the THC amount as the limiting factor.
- Edibles: account for delayed onset, often 30 to 120 minutes.
How do you titrate a cannabis dose?
- Choose one product and record its THC, CBD, and serving size.
- Start with a low dose and keep other variables stable.
- Wait for full onset before adding more: minutes for inhalation, hours for oral products.
- Increase by small increments every few days only if needed.
- Stop or reduce the dose if dizziness, anxiety, nausea, or sedation occurs.
Why does the same dose affect people differently?
Bioavailability changes by route. Inhalation reaches the bloodstream quickly, while oral products pass through the liver and can produce stronger or longer effects. Tolerance, liver enzymes, age, and interactions with other drugs also matter.
What should you track in a personal dosage chart?
- Product name, batch, THC mg, and CBD mg
- Route and time of dose
- Onset, peak, and duration
- Symptom score before and after
- Side effects and sleep quality
- Other medications or alcohol
When should you ask a clinician?
Ask before starting if you take blood thinners, sedatives, or liver-metabolized drugs, or if you are pregnant, breastfeeding, or under 21. Seek urgent care for chest pain, severe confusion, or fainting. This guide is educational and is not a prescription.