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How to Read a CBD Oil Label and Measure a Serving

June 25, 2026

The number on a CBD oil bottle is the total for the whole bottle, which makes it easy to misread how much is in each serving.

The FDA has not evaluated CBD products like ours to determine what the proper dosage is, so this guide does not recommend an amount. It explains how to read the label and measure what you take.

As a pharmacist, I wrote this guide so the numbers on our labels are clear.


Follow the serving size printed on your product's label. If you take prescription medication or have a medical condition, talk with your physician or pharmacist before using CBD.


How to Measure CBD Drops Accurately

The milligram (mg) count on the bottle refers to total CBD content in the entire bottle, not per serving. Here's how to calculate what's actually in each drop:

Formula: Total CBD (mg) ÷ Bottle volume (mL) = mg per mL

Product Bottle Size mg Per mL Approx. mg Per Drop
300mg Tincture 30mL 10mg/mL ~0.5mg
600mg Tincture 30mL 20mg/mL ~1mg
1000mg Tincture 30mL 33mg/mL ~1.7mg
2000mg Tincture 30mL 67mg/mL ~3.3mg
3000mg Tincture 60mL 50mg/mL ~2.5mg
5000mg Tincture 60mL 83mg/mL ~4.2mg

Standard dropper = approximately 1mL = about 20 drops

For example, a 1 mL dropper of our 1000mg tincture holds about 33 mg of CBD, or about 1.7 mg per drop.

To use the oil under the tongue, hold it there for 30 to 60 seconds before swallowing.


If you're taking prescription medications, especially blood thinners, anti-seizure medications, or anything with a "grapefruit warning" on the label, talk to your pharmacist or physician before starting CBD. See our full FAQ for more detail.


Our tinctures come in 300, 600, 1000, 2000, 3000 and 5000 mg bottles, in Mint, Cinnamon, Natural and Orange Mist.


If you have questions about our products, call us at 800-431-3651.

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