Match the mL to the mg per mL first
A cannabis tincture dosage chart only works when you know the concentration behind the volume. Two bottles can both hold 30 mL while one delivers 1 mg of THC per mL and the other delivers 20 mg per mL, so the same 1 mL mark on a dropper can mean a twentyfold difference in effect. Before you buy, find three numbers on the package: total THC in milligrams, total liquid volume in milliliters, and the mg per mL that comes from dividing the first by the second. If the label skips that ratio, or lists hemp CBD with no THC figure at all, treat the product as unmeasurable and ask staff for the batch lab report. A tincture with a stated mg per mL and a graduated dropper is the most useful thing you can bring home, because every chart, redose, and adjustment depends on those numbers.
What to look for before you buy
- Total THC and total CBD in mg, plus the bottle volume in mL, printed together on one panel.
- The mg per mL ratio spelled out, not left for you to calculate from a serving size in drops.
- A dropper or oral syringe marked in 0.25 mL increments. Unmarked glass pipettes invite errors.
- Carrier type: alcohol-based tinctures absorb under the tongue faster, MCT oil and glycerin versions tend to be milder in taste and slower.
- Third-party lab testing with a batch number you can match to the bottle.
- Child-resistant packaging, a universal THC symbol where your state requires it, and a clear CBD to THC ratio.
- A harvest or test date, since cannabinoid content drifts in older stock.
Dose bands to compare against your goal
State-regulated markets generally treat 10 mg of THC as one adult serving for edible products, but tincture users often work below that. A practical ladder looks like this.
- 1 mg to 2.5 mg: first-time or THC-sensitive users, and anyone stacking with other medications.
- 2.5 mg to 5 mg: light daytime relief, mild mood support, sleep onset for some people.
- 5 mg to 10 mg: the common moderate band, matching one standard serving at the top end.
- 10 mg to 20 mg: frequent users with established tolerance.
- Above 20 mg: heavy tolerance or clinician-guided dosing, measured in a log rather than by feel.
Turning mL into mg at common concentrations
Multiply the volume you draw by the mg per mL on the label. At 5 mg per mL, 0.25 mL is 1.25 mg and 1 mL is 5 mg. At 10 mg per mL, 0.25 mL is 2.5 mg, 0.5 mL is 5 mg, and 1 mL is 10 mg. At 20 mg per mL, 0.25 mL is 5 mg and 1 mL is 20 mg. A 0.5 mL dropper holds half a milliliter even though it looks full, and a dropper marked in drops is the hardest format to dose from. Write the math on a card and tape it to the bottle for the first month.
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How to measure and take a dose
- Shake the bottle for ten seconds so cannabinoids are evenly spread.
- Draw to the exact mark on the dropper or syringe at eye level, not above it.
- Hold the liquid under your tongue for 60 to 90 seconds before swallowing.
- Note the time, the volume, and the mg you took.
- Wait a full two hours before considering a second dose.
Timing: why the first hour tells you nothing
Sublingual absorption usually starts within 15 to 45 minutes. Liquid that gets swallowed with saliva behaves more like an edible, with effects arriving between 30 minutes and two hours, peaking around two to four hours, and fading over four to eight hours. Alcohol-based tinctures generally come on faster than oil-based ones. This delay is the reason a small first dose beats a bold one: you cannot un-take a dose, and the window between swallowing and feeling it is where most uncomfortable experiences begin.
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Pitfalls that break a dosage chart
- Assuming every dropper is 1 mL. Many are 0.5 mL, and some are unmarked.
- Treating ten drops as a unit when drop size changes with liquid thickness and angle.
- Using a kitchen teaspoon. One teaspoon is about 5 mL, which can be ten times a sensible starting dose.
- Skipping the shake, so early pours run weak and late pours run strong.
- Reading a CBD-forward label as THC-free. Full-spectrum products can carry THC.
- Combining tinctures with alcohol, sedatives, or sleep aids, which compounds impairment.
- Driving after dosing, even at low milligrams.
- Leaving bottles within reach of children or pets, where a sweet carrier tastes like candy.
- Buying from unlicensed sellers, where the mg per mL on the label is guesswork.
FAQ
How many mL is 5 mg of THC?
Divide 5 by the mg per mL on the label. That is 1 mL at 5 mg per mL, 0.5 mL at 10 mg per mL, and 0.25 mL at 20 mg per mL.
Is a full dropper one dose?
Only if the dropper is 1 mL and the concentration suits you. Treat the dropper as a measuring tool, not a serving size.
Why did nothing happen after an hour?
Swallowed tincture can take two hours or longer. Give it the full window before adding more, and check that you shook the bottle.
Can I switch tinctures without recalculating?
No. Recalculate the mg per mL every time you open a new bottle, since brands and batches differ.
Tincture dosing is not medical advice. Check your state purchase limits, keep products away from minors, do not drive after use, and talk with a pharmacist about interactions with prescriptions.