A medical cannabis dosage chart is a reference that maps THC and CBD amounts to delivery methods such as inhalation, oral tincture, or edibles. It cannot hand you one exact number, because your best dose depends on your body, tolerance, condition, and the specific product. Clinical guidance is consistent: start low, go slow, and increase only after you see how your body responds to a single dose.

What a Medical Cannabis Dosage Chart Actually Shows

Dosing charts are planning tools, not prescriptions. Most organize the same four pieces of information.

A chart helps you read a product label and pick a sensible first dose. It does not replace a clinician who knows your history and medications.

Why No Single Dose Works for Everyone

The endocannabinoid system varies between people. Body weight matters less than expected, while tolerance, liver enzyme activity, genetics, age, and prior cannabis use matter a great deal. Someone who has used cannabis daily for years may need many times the dose of a first-time patient to feel the same effect. That is why every credible chart publishes ranges and a titration schedule rather than a fixed milligram target.

Starting-Point Ranges by Delivery Method

These figures reflect commonly cited low starting doses for adults new to medical cannabis. Treat them as a floor, not a goal.

Many patients find 2.5 to 10 mg THC per dose sufficient. Higher doses are sometimes used clinically, but only after gradual titration and medical supervision.

THC Dosing and the Biphasic Effect

THC produces opposite effects at different dose levels. A low dose may ease pain, nausea, or anxiety, while the same person at a higher dose may feel more anxious, dizzy, or sedated. This biphasic pattern is one of the main reasons charts emphasize small increments. Jumping from a comfortable dose to a double dose rarely improves the result and often increases side effects.

CBD Dosing Is Different

CBD is usually dosed higher and titrated over weeks. The FDA-approved prescription CBD product Epidiolex begins at 2.5 mg per kilogram of body weight taken twice daily. Over-the-counter CBD products have no standard dose, and labels vary widely in accuracy. Common wellness ranges start around 10 to 25 mg per day, while clinical research sometimes uses 100 mg or more daily under supervision.

How to Titrate Safely

  1. Pick one product with a known THC and CBD content per dose
  2. Start at the low end of the range for your route
  3. Keep the dose the same for at least 2 to 3 days
  4. Increase by small steps, such as 1 to 2.5 mg THC, only if relief is inadequate
  5. Stop increasing once symptoms improve or side effects appear
  6. Lower the dose if you feel anxious, dizzy, nauseated, or overly sedated

Onset and Duration by Route

Edible timing is the most common source of accidental overconsumption. The peak may not arrive until several hours after you swallow, so a second dose taken too soon compounds into a much larger effect than intended.

Factors That Shift Your Dose

Interactions and Safety Notes

CBD inhibits certain liver enzymes in the cytochrome P450 family, which can raise blood levels of drugs including clobazam, warfarin, and some anticonvulsants. Alcohol and sedatives amplify THC sedation. High-dose oral THC can cause racing heart, vomiting, or short-term paranoia, and edible overdoses are a frequent reason for emergency visits.

Keep a Dosing Log

Record the date, product, THC and CBD milligrams, route, time of day, symptom score, and any side effects. A written log turns a generic medical cannabis dosage chart into a personal one, and it gives your clinician real data to work with at your next visit.

Talk With a Clinician Before You Start

Cannabis is not FDA-approved as a medical treatment, though specific cannabinoid drugs such as Epidiolex, Marinol, Syndros, and Cesamet are. A physician familiar with medical cannabis can review your medication list, confirm that dosing applies to your condition, and set a titration plan that fits your risk profile.