CBD vs THC: Flower, Edibles, and Topicals

THC and CBD are the two best-known compounds in cannabis, and two of the most misunderstood. One gets you high and the other doesn’t, but that’s only the beginning. These two cannabinoids act almost like opposites in some ways and complement each other in others. Understanding how they differ is the foundation for picking the right product, choosing the right ratio and getting the experience you want, whether that’s flower, edibles or topicals.

The Short Answer

THC (tetrahydrocannabinol) is intoxicating and produces the classic cannabis high. CBD (cannabidiol) is non-intoxicating, so it doesn’t make you feel high. Both come from the same plant, and both interact with your endocannabinoid system, just in very different ways.

What Is THC?

THC is the main psychoactive compound in cannabis. The euphoria, altered perception, relaxation and hunger people associate with cannabis come from THC. Israeli chemist Raphael Mechoulam and his colleague Yechiel Gaoni first isolated it in 1964, and for decades it was the cannabinoid researchers and regulators focused on.

THC works by binding directly to CB1 receptors in the brain and nervous system, which produces the effects of being high.

Effects people commonly report from THC:

• Euphoria and a lifted mood
• Relaxation
• The munchies
• An altered sense of time
• At higher doses: anxiety, paranoia or a racing heart

What Is CBD?

CBD is usually the second most abundant cannabinoid in cannabis and the best-known non-intoxicating one. It was first isolated in 1940 but largely ignored until the 2000s. Today it shows up in flower, tinctures, topicals, drinks and an FDA-approved medication.

Unlike THC, CBD doesn’t bind strongly to CB1 or CB2 receptors. It seems to work more indirectly, influencing the enzymes that regulate the body’s own cannabinoids and interacting with other receptor systems.

CBD’s best-established medical use is narrow: in 2018, the FDA approved Epidiolex, a purified CBD medication, for two rare forms of epilepsy, Lennox-Gastaut and Dravet syndrome, after clinical trials.¹ Research on other uses is ongoing.

The Key Differences

Intoxication

THC is intoxicating; CBD isn’t. Even large doses of pure CBD don’t produce a high.

How They Work

THC binds directly to CB1 receptors. CBD doesn’t; it’s sometimes described as a modulator because it can influence how other compounds, including THC, act on those receptors.

Legal Status

In Ohio and Maryland, both THC and CBD products are sold within each state’s regulated cannabis program. Hemp-derived CBD has been federally legal under the 2018 Farm Bill, but the federal hemp definition is changing in late 2026, and state rules vary. See our federal hemp and delta-8 update and hemp vs. cannabis.

Drug Testing

Standard drug tests look for THC, not CBD. Pure CBD isolate usually won’t cause a positive result, but full-spectrum CBD products contain trace THC that can, especially with regular use. If you’re drug tested, use certified THC-free products or skip CBD.

Side Effects

THC’s main side effects are anxiety, paranoia and short-term memory problems, especially at higher doses. CBD is generally well tolerated, though it can cause drowsiness, dry mouth or appetite changes. Both can interact with some prescription medications through the liver enzymes that process them, so check with your doctor or pharmacist if you take any.

THC and CBD Together

CBD appears to soften some of THC’s less pleasant effects, like anxiety and a racing heart, without cancelling the high. That’s a big reason balanced 1:1 products have become popular, especially with newer consumers. It’s also one of the clearest examples of the entourage effect.

How to Choose a Ratio

Many products list a THC:CBD ratio. Here’s how to think about it:

• High THC, low CBD: the strongest high. Best for experienced consumers.
• 1:1: a milder high that many people find more comfortable. A common choice for beginners.
• CBD-dominant (2:1, 4:1 and up): little to no high.
• Pure CBD: no high at all.

Bloom stocks a range of ratios in Ohio and Maryland, from THC-dominant flower to balanced tinctures and CBD-forward topicals. Ask a budtender what’s on the menu.

CBD vs. THC by Product Type

Flower

CBD flower is bred to be high in CBD and low in THC, so it gives you the ritual of smoking or vaping without much of a high. THC flower is what most people picture when they think of cannabis. Many strains fall in between, with meaningful amounts of both. See our cannabis flower guide.

Edibles

CBD and THC both come in gummies, chocolates, baked goods, mints, drinks and capsules. CBD edibles are a discreet way to take CBD without a high. THC edibles produce a strong, long-lasting high that starts slowly, so dosing carefully matters. See exploring edibles: a beginner’s guide and edible dosing for new users and experts.

Topicals

CBD and THC topicals are applied to the skin and act where you apply them. Standard topicals with either cannabinoid don’t produce a high; transdermal patches are the exception. Research on how well topicals work is still ongoing. See our guide to cannabis topicals.

Tinctures

Tinctures come in THC, CBD and ratio versions and make it easy to measure small doses. See our guide to cannabis tinctures.

Is THC Addictive? Is CBD?

Regular THC use can lead to dependence in some people, and tolerance builds with frequent use. CBD isn’t generally associated with addiction. Using THC in moderation and taking periodic tolerance breaks helps, and if you’re concerned about your use, talk to a healthcare provider.

Frequently Asked Questions

Will CBD cancel out a THC high?

Not exactly. CBD may soften a THC high, particularly the anxiety, but it won’t erase it. See how to sober up from weed.

Can CBD get you high in large doses?

No. Even large doses of pure CBD don’t cause intoxication, though you may feel drowsy.

Which is better if THC makes me anxious?

Many people who are sensitive to THC prefer CBD-dominant or balanced products, since high doses of THC can make anxiety worse in some people.

Can you fail a drug test from CBD?

Pure CBD isolate usually won’t cause a positive test, but full-spectrum CBD contains trace THC that can build up with regular use. If you’re tested, choose certified THC-free products or avoid CBD.

Does CBD have side effects?

It’s generally well tolerated, but it can cause drowsiness, dry mouth, appetite changes and occasionally diarrhea, and it can interact with some medications.

The Bottom Line

THC and CBD do very different things. THC produces the classic high; CBD doesn’t. The right product depends on what you want to feel, and for many people a balanced ratio of both turns out to be the sweet spot.

Ohio Bloom Dispensaries

Bloom serves registered medical patients and recreational customers 21+ at seven Ohio dispensaries:

• Bloom Akron
• Bloom Athens
• Bloom Massillon
• Bloom Painesville
• Bloom Seven Mile
• Bloom South Columbus
• Bloom West Columbus

Maryland Bloom Dispensary

Bloom serves medical patients and recreational customers 21+ at our Germantown dispensary.

• Bloom Germantown

Footnotes

1. Devinsky et al., 2017. Trial of Cannabidiol for Drug-Resistant Seizures in the Dravet Syndrome. New England Journal of Medicine. ↩