How do you calculate a medical cannabis tincture dose?
Divide your target milligram dose by the tincture's concentration in mg per mL. If a 30 mL bottle holds 600 mg THC, the concentration is 20 mg per mL, so a 5 mg dose is 0.25 mL. That one formula, dose divided by concentration, is the whole calculator.
medical cannabis tincture dosage chart
What numbers do you need before dosing?
You need three figures from the product label: total cannabinoid milligrams in the bottle, total bottle volume in mL, and the number of drops your dropper delivers per mL.
- Total mg per bottle: often printed as THC, CBD, or total cannabinoids separately.
- Bottle volume: usually 15 mL or 30 mL.
- Dropper yield: most glass droppers release about 20 drops per mL, but confirm yours.
How to use a tincture dosing calculator step by step
- Find concentration: total mg ÷ bottle mL.
- Pick your target dose in mg of THC.
- Convert to volume: target mg ÷ concentration = mL per dose.
- Convert to drops: mL per dose × drops per mL.
A 300 mg THC bottle in 30 mL gives 10 mg per mL. For a 2.5 mg starting dose, draw 0.25 mL, which is roughly 5 drops at 20 drops per mL.
What is a typical starting dose of THC tincture?
Most clinical guidance starts adults at 1 mg to 2.5 mg of THC per dose and increases slowly. Standard retail doses land near 5 mg to 10 mg of THC, but tolerance, body weight, and prior use change that number a lot. CBD-dominant tinctures are often dosed higher, sometimes 10 mg to 25 mg or more, because CBD is less psychoactive.
medical cannabis tincture dosing calculator
How long should you wait between doses?
Sublingual tincture held under the tongue usually takes effect in 15 to 45 minutes. Swallowed tincture digests like an edible, with onset at 30 to 90 minutes and a longer, stronger curve. Wait at least two hours after a swallowed dose before adding more.
Why does the same mL hit differently?
Sublingual absorption bypasses the liver, so more THC reaches the bloodstream unchanged. Swallowed tincture passes through first-pass metabolism, converting THC into 11-hydroxy-THC, which is more potent and more unpredictable. Food in the stomach, saliva, and how long you hold the liquid all shift the result.
Common tincture dosing mistakes
- Confusing total bottle mg with mg per mL.
- Assuming every dropper is 1 mL when it is marked 0.5 mL.
- Redosing too soon because onset felt slow.
- Ignoring CBD or minor cannabinoids that also appear on the label.
Safety notes for tincture dosing
Keep tinctures locked away from children and pets, and do not drive after a dose until you know your response. THC can interact with sedatives, anticoagulants, and some seizure medications, so confirm your plan with a pharmacist or physician. Titrate upward by small increments every two to three days rather than jumping to a full dose.