A THC:CBD ratio tells you how much THC a product holds compared with CBD, or with another cannabinoid such as CBG or CBN. A 1:1 gummy carries equal milligrams of each; a 5:1 carries five times more THC than its partner. The ratio describes the blend, but the THC in each piece still decides how strong it feels. Here is how to read the numbers, what research says about each partner, and how to start low.
What a THC:CBD ratio on the package means
Ratios compare weight in milligrams and are usually written with names attached, such as 5:1 THC:CBN or 20:1 CBD:THC. The first number belongs to the first cannabinoid named, so check the order before assuming anything. Our guide to what cannabinoids are covers the basics.
The ratio alone never tells you the dose. Two 1:1 gummies can feel very different if one holds 2.5 mg of each cannabinoid and the other holds 10 mg of each.
Common ratios and who tends to choose them
| Ratio | Example per piece | Who tends to look for it |
|---|---|---|
| 1:1 THC:CBD | 5 mg THC + 5 mg CBD | People who want THC alongside an equal share of CBD |
| 2:1 THC:CBD | 5 mg THC + 2.5 mg CBD | People who want THC to lead, with some CBD |
| 5:1 THC:CBN or THC:CBG | 5 mg THC + 1 mg CBN or CBG | People curious about minor cannabinoids |
| 20:1 CBD:THC | 10 mg CBD + 0.5 mg THC | People who want very little THC |
These describe how products are positioned, not how you will feel. That depends mostly on the THC dose, your tolerance, timing and whether you have eaten.
What CBD brings to a THC product
CBD by itself does not cause a high. Whether it changes how THC feels is less clear. A 2019 systematic review of 16 studies found mixed results: CBD reduced some THC effects in several studies, but not consistently, with no clear dose pattern.
A 2023 randomized trial gave 46 infrequent users vaporized cannabis with 10 mg of THC and up to 30 mg of CBD. CBD did not change THC's effects on memory, psychotic-like symptoms or pleasure, and the authors found no evidence that CBD protects against THC's acute adverse effects at the ratios most common in products. The practical lesson: dose a 1:1 product by its THC.
CBG and CBN in blends: what is known and what is still marketing
CBG is the molecule the plant uses as a starting point for its most abundant cannabinoids. In a small 2024 trial, 20 mg of CBG produced no sign of a high or impairment, but human research is early, so read bold claims skeptically. Our guide to CBG has more.
CBN forms as THC oxidizes over time, and it often shows up in products marketed for nighttime. Human research on CBN and sleep is still thin. In a 2026 overnight trial of 20 adults with diagnosed insomnia, neither 30 mg nor 300 mg significantly changed the main measure, time awake after first falling asleep. A few secondary measures moved at the higher dose, and the authors called for larger, longer trials. In most blends, THC is still what you will feel. See our CBN explainer.
Low-dose and social formats: gummies, pastilles, mints, vapes
Gummies and pastilles make a precise dose easy. Mints are small, which suits low doses. Drinks are another route; in Michigan a cannabis beverage can hold up to 10 mg of THC per serving and 100 mg per container. Vapes list cannabinoid content too, but inhaled THC is felt within minutes, while edibles are slower: their effects may not show for up to 2 hours. Our THC dosage guide covers timing by format.
So-called socially dosed edibles are low-THC pieces meant to be paced across an evening: one small piece, a long wait, then decide.
Reading mg per piece versus per package on a Michigan label
Michigan labels list THC and CBD content with a note that actual values may vary by 10%, plus an activation time and the testing lab. Adult-use edibles are capped at 10 mg of THC per serving and 200 mg per package. Divide each cannabinoid's package total by the number of pieces: 100 mg of THC and 100 mg of CBD across 20 pieces is 5 mg of each per piece. Our label-reading walkthrough covers every other line on the package.
How to choose and start low with a blended product
- Pick your THC dose first, then the partner cannabinoid.
- If you are new, start small, such as half of a 5 mg piece.
- Give an edible a full two hours before you consider another piece.
- Skip alcohol, and never drive after using cannabis.
- Keep products in child-resistant packaging, locked away from kids and pets.
Talk with your doctor or pharmacist first if you are pregnant or breastfeeding, take any medications, or have a health condition.
Questions to ask a budtender
- How many milligrams of THC, and of the partner cannabinoid, are in one piece?
- Is the ratio written THC first or CBD first?
- What activation time does the label list?
- Is there a lower-dose version of this format?
Selection varies by store and changes often, so ask our budtenders at your nearest High Society store. 21+ only, or 18+ with a Michigan medical card. Please consume responsibly.
