Medical Cannabis Dosage Chart: How to Read One and Start Low

The most reliable pick is a milligram-based titration chart built around THC per dose, not a chart that counts puffs, bites, or drops. Potency varies by product and batch, so a chart only works when it expresses each dose in milligrams of THC and CBD, lists the route of administration, and shows onset and duration for that route. Those four criteria, milligrams, route, onset, and duration, are what separate a usable chart from a marketing graphic. From there, the chart is a starting reference, not a prescription, and your clinician decides the actual plan.

Medical Cannabis Dosage Chart Printable

Why one dosage chart cannot fit everyone

Cannabis has no standard unit. A 10 mg THC edible from one producer and a 10 mg THC edible from another can feel different because of how the drug is absorbed, what else is in the product, and how your body metabolizes THC. Liver enzymes in the CYP450 family handle most THC breakdown, and their activity varies widely between people. Body weight matters less than most people expect, while age, liver function, tolerance, and other medications matter more. That is why published guidance repeats the same instruction: start low, go slow, and change only one variable at a time.

THC per dose: the actual milligram number you will use to titrate, listed per unit, not per package.
CBD per dose: tracked separately, because CBD can soften some THC effects without canceling them.
Ratio: written as THC:CBD, such as 1:1 or 1:20, so you can compare products across brands.
Route: oral, sublingual, inhaled, or topical, since each has a different onset window.
Onset and duration: the time to wait before judging a dose, and how long the effect should last.
Increment: how much to add when you increase, usually the same small amount you started with.

Starting ranges by route

Many clinicians begin patients at 1 mg to 2.5 mg of THC per dose, once daily, and increase every few days. Treat that as a reference band, not a target. Route is the biggest single variable.

Pros: consistent milligram dosing, effect lasts 6 to 8 hours or longer, easy to split into small steps.
Cons: onset of 30 to 120 minutes makes double dosing easy, effects feel stronger than inhaled THC at the same milligram count.

Best for: people who need long-lasting symptom coverage and can commit to waiting a full two hours before redosing.

medical cannabis dosing chart for pain

Inhalation (flower or vape)

Pros: onset within 5 to 10 minutes, easy to stop early, duration of roughly 2 to 4 hours.
Cons: dose per puff is hard to measure, potency varies, and smoke or vapor irritates airways.

Best for: rapid relief from breakthrough symptoms and for learning how THC feels to you at low exposure.

Sublingual tinctures

Pros: faster than swallowed oil, onset around 15 to 45 minutes, dosing measured with a marked dropper.
Cons: absorption varies with technique, hold time, and saliva, so results shift between doses.

Best for: a middle path when edibles take too long but inhalation is not an option.

Topicals

Pros: localized use on skin and joints, minimal to no psychoactive effect.
Cons: no systemic relief, limited evidence for internal conditions.

Best for: localized muscle or joint discomfort where intoxication is unwanted.

THC to CBD ratios and what they change

Ratio tells you how much of each cannabinoid lands in one dose. A 1:1 product at 5 mg THC and 5 mg CBD behaves differently from 5 mg THC alone, and CBD-dominant products at 1:20 or higher are often chosen by people who want symptom support without a strong high. CBD can also interact with prescription drugs through the same liver enzymes, so ratios belong in the same conversation as your medication list.

A titration schedule you can follow

Pick one product and one route, and write down its THC and CBD milligrams per unit.
Start at 1 mg to 2.5 mg THC, taken at the same time of day.
Wait the full onset window before judging the dose. Two hours for oral, 30 minutes for sublingual, 15 minutes for inhaled.
Hold that dose for 2 to 3 days. If relief is inadequate and side effects are tolerable, add the same increment.
Repeat until you reach relief with acceptable side effects, or until side effects appear. The step before side effects appear is your working dose.
Log date, dose, route, effect, and side effects. Patterns show up in a written log that memory misses.

Factors that shift your dose

Age, especially over 65, where confusion and falls risk rise with THC.
Other medications, particularly sedatives, blood thinners, and seizure drugs.
Tolerance, which builds with daily use and lowers the dose you need for the same effect.
Food, which delays and can increase oral absorption.
Product switching, since a new brand at the same milligram count may not feel the same.

When to stop and call a clinician

Stop and get medical advice for chest pain, a racing heartbeat, severe vomiting, fainting, confusion, or panic that does not settle. Cannabis is not appropriate during pregnancy, and it carries real risk for people with a personal or family history of psychosis. Do not drive after any dose that produces impairment.

Bottom line

A medical cannabis dosage chart is a measuring tool, not an instruction sheet. Use one that lists THC and CBD milligrams per dose, note the route, respect the onset window, and increase by small equal steps every few days. Bring your log to your clinician and let them adjust the plan around your condition and your other medications.