CBD benefits are easy to find on product labels and much harder to find in clinical trials. Cannabidiol, or CBD, is a non-intoxicating compound from the cannabis plant, and people use it for reasons ranging from stress to sleep. The evidence is uneven: strong for one prescription seizure medicine, early or weak for most everyday uses. Here's what CBD is, what research shows, how to use it safely and what Michigan law allows.
What CBD is, and why it doesn't intoxicate like THC
CBD is one of more than 100 cannabinoids identified in cannabis, and it's the main one in many hemp plants. THC is the compound that produces the high. CBD works differently in the body and doesn't produce that intoxication. It isn't the only non-intoxicating cannabinoid, either; see how it stacks up against CBG.
Non-intoxicating isn't the same as inactive, though. CBD can change alertness, appetite and mood, it can upset the stomach, and it interacts with medications. Our article on whether CBD is psychoactive digs into the difference.
The strongest evidence: a prescription CBD medicine for seizures
So far, the FDA has approved one CBD product: Epidiolex, a purified CBD oral solution. The FDA first approved it in 2018 for seizures tied to two rare, severe forms of epilepsy, Lennox-Gastaut syndrome and Dravet syndrome. Its approval now also covers seizures associated with tuberous sclerosis complex, in patients 1 year of age and older.
That approval rests on controlled clinical trials of a pure, consistently dosed product used under medical supervision. It doesn't carry over to over-the-counter oils or gummies. The FDA hasn't evaluated those products to determine whether they work, what the proper dose is or how they interact with other drugs.
What studies suggest about CBD benefits for pain, sleep, anxiety and mood
If you've wondered about CBD for pain, sleep or anxiety, here's where the research stands. None of these uses is approved, and none is backed by strong evidence yet.
| Reason people try CBD | What research shows so far | Strength of evidence |
|---|---|---|
| Pain | A 2024 review of 16 randomized trials of CBD with pain outcomes found that 15 showed no benefit over placebo | Weak and mostly negative |
| Sleep | Studies of cannabis products in people with other health problems often report better sleep, but it's unclear whether that's a direct effect; effects in people without other illnesses are uncertain | Uncertain |
| Anxiety | In one small study, 24 people with social anxiety disorder had less anxiety during a simulated public-speaking task after CBD than after placebo | A small amount of evidence |
| Mood and depression | Research on cannabinoids for conditions beyond the approved uses is in its early stages | Early |
A few points help put this in context. The pain trials used doses ranging from 6 to 1,600 mg, so results at one dose don't tell you much about another. Small, short studies can't show whether an effect lasts. And because retail CBD content can range from none to far more than advertised, even a promising study may say little about the bottle on a shelf. If you're living with pain, poor sleep, anxiety or low mood, start with a clinician who can look at the whole picture.
Safety: side effects, liver enzymes and drug interactions
CBD has a reputation as harmless, and the FDA has pushed back on that idea. Its review of the data points to real risks:
- Liver injury. In studies of the prescription product, some people showed signs of liver injury on blood tests, including people who weren't taking other drugs that affect the liver.
- Drug interactions. CBD can increase or decrease the effects of other medicines, and some medicines can change how much CBD is safe for you.
- Sedation. CBD combined with alcohol or other drugs that slow brain activity raises the risk of drowsiness and injuries.
- Male reproductive effects. Animal studies found harm to male fertility; what that means for people isn't yet clear.
- Everyday side effects. Sleepiness or, less often, insomnia; diarrhea or decreased appetite; and irritability or agitation. These usually ease when you stop or lower the amount.
NCCIH, part of the National Institutes of Health, adds that CBD may produce psychotic effects or cognitive impairment in people who also regularly use THC. Big questions also remain about daily use over months and about use during pregnancy or breastfeeding. If you're pregnant, breastfeeding, take any medication or have liver problems, talk with your clinician or pharmacist before using CBD.
Is CBD legal in Michigan? Hemp-derived vs. marijuana-derived CBD
Chemically, CBD is the same molecule whether it's extracted from hemp or from marijuana. The law draws its line at THC:
- Hemp-derived CBD. Under Michigan law, cannabis with 0.3% THC or less, counting THCA, is industrial hemp.
- Marijuana-derived CBD. Above 0.3% THC, counting THCA, it's marijuana, which only licensed marijuana businesses may sell.
Federal rules are changing. A November 2025 federal law narrows the definition of hemp: once in force, it counts total THC, including THCA, and excludes finished products holding more than 0.4 mg of total THC per container. The change is set to take effect in late 2026, as of October 2026; further changes are possible. Full-spectrum hemp CBD products that carry small amounts of THC could be affected.
Types of CBD products
CBD comes in most of the same formats as THC:
| Format | How it's used | What to know |
|---|---|---|
| CBD oil and tinctures | Drops under the tongue or in food | Marked droppers make small doses easy to measure |
| Capsules and softgels | Swallowed | Fixed dose; slow to start |
| Edibles and drinks | Gummies, chocolates, beverages | Fixed dose; slow to start |
| Topicals | Lotions, balms, creams | Applied to the skin; how much is absorbed isn't well understood |
| Inhalables | Vapes and CBD-rich flower | Fast onset; harder to measure |
Choosing a CBD product: lab results, spectrum and serving size
A few checks go a long way:
- Find the lab results. Testing has turned up CBD products holding a different amount of CBD than advertised, and some carried contaminants such as THC. A lab report from an independent lab shows what's in the batch.
- Know the spectrum. Full-spectrum extracts keep many plant compounds, including small amounts of THC. Broad-spectrum extracts aim to remove THC, and isolate is CBD alone. Our guide to full-spectrum CBD compares them.
- Read the milligrams per serving, not just the bottle total. Our CBD dosage guide walks through the math.
- Mind drug tests. In a controlled study, pure CBD didn't produce a positive result on follow-up lab testing, but a CBD-dominant product with a little THC did. Products can also contain THC their labels don't mention.
- Skip products that promise to fix a condition. Those claims haven't been evaluated by the FDA.
To compare the two main cannabinoids directly, read CBD vs. THC.
Talk to a clinician or pharmacist first
Because CBD can interact with medicines and affect the liver, the most useful step before trying it is a short conversation with your pharmacist or clinician. Bring the product or its label and a list of everything you take, including supplements. A few questions worth asking:
- Could CBD change how any of my medicines work, or the other way around?
- Do I take anything else that causes drowsiness, including alcohol or sleep aids?
- Given my health history, should my liver be checked?
- Is CBD a reasonable idea while I'm pregnant, breastfeeding or trying to conceive?
Don't use CBD in place of care for a medical problem, and don't stop a prescribed medication on your own.
Questions about a label? Our budtenders are happy to explain one in store, and your pharmacist can check a product against your medicines. Licensed stores sell to adults 21 and older, and to patients 18 and older who hold a medical marijuana card. Enjoy cannabis responsibly.
