Learning how to dose medical cannabis tincture comes down to three habits: measure in milligrams of THC and CBD, start with the smallest serving on the label, and wait at least two hours before taking more. Because a tincture is a liquid, a dropper lets you split a serving into smaller amounts than a capsule or a standard edible allows.
Read the Numbers on the Label First
Most tinctures list total THC and CBD for the bottle, plus milligrams per milliliter or per drop. Divide total milligrams by bottle volume to find the amount in each dropper. A 30 mL bottle with 300 mg of THC holds about 10 mg per mL, so half a dropper is roughly 5 mg. Write down four things before your first dose:
Medical Cannabis Tincture Dosage in mg: A Practical Guide
- Milligrams of THC per mL
- Milligrams of CBD per mL
- Base liquid, such as MCT oil, olive oil, or alcohol
- THC to CBD ratio
How to Take a Tincture
- Shake the bottle so the cannabinoids are evenly mixed.
- Draw liquid into the dropper and check it against the markings.
- Place it under your tongue and hold for 60 to 90 seconds.
- Swallow what remains.
- Note the time and the dose.
Holding the liquid under the tongue sends cannabinoids into the bloodstream within about 15 to 45 minutes. If you swallow right away, the dose travels through the liver and can take one to two hours to peak. Swallowed doses also convert THC into a stronger metabolite, so the same number of milligrams can feel more intense.
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A First-Week Schedule
- Day 1: 1 to 2.5 mg of THC, once.
- Days 2 and 3: repeat the same dose and observe.
- Days 4 to 7: add 1 to 2.5 mg every two or three days if you need more relief.
- Keep CBD steady if it is part of your plan.
Wait a full two hours before redosing, and longer if you swallowed the tincture rather than holding it. Stacking doses too soon is the most common reason people feel overwhelmed.
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What Changes Your Dose
Body weight, liver function, tolerance, and other medications all shift how a tincture lands. Sedatives, opioids, and blood thinners deserve extra caution, and older adults often need less. Food in the stomach, alcohol, and whether you held the liquid sublingually or swallowed it also matter.
Track and Adjust
Keep a simple log with the date, time, milligrams, how you took it, and how you felt two hours later. Give each dose two or three days before you judge it. Patterns show up faster in writing than in memory, and your prescriber can adjust the plan from real notes.
Storage and Safety
Store tinctures upright in a cool, dark place with the cap tight, and keep them away from children and pets. Do not drive after a dose until you know how it affects you. Bring your log to your next appointment and ask a pharmacist about interactions with anything else you take.