While human overdose is rare, THC can interact with other drugs and has a complex pharmacokinetic profile. THC is classified variably under international and US law, with …

Dec 21, 2025 · THC, or delta-9-tetrahydrocannabinol, is the best-known psychoactive compound found in marijuana. Learn more about the effects, medicinal uses, and risks of THC.

Sep 9, 2025 · The higher the THC amount, the stronger the effects on the brain—likely contributing to increased rates of marijuana-related emergency room visits. While there is no …

Oct 8, 2025 · THC is short for tetrahydrocannabinol. It’s the main compound in cannabis, responsible for the intoxicating “high” you may feel when you consume some cannabis products.

Jan 31, 2025 · Find answers for commonly asked questions about cannabis and cannabidiol (CBD). What is cannabis? How is cannabis used? Are some ways of using cannabis safer …

Jan 5, 2024 · THC, or tetrahydrocannabinol, is the primary psychoactive compound in cannabis, responsible for the plant’s euphoric effects. When consumed, THC interacts with receptors in …

Dec 25, 2025 · Marijuana, drug composed of the leaves and flowers of plants in the genus Cannabis. Marijuana is known by several other names, including pot, grass, and weed. It can …

The word “marijuana” refers to parts of or products from the plant Cannabis sativa that contain substantial amounts of tetrahydrocannabinol (THC). THC is the substance that’s primarily …

THC works by binding to specific sites in the brain and on the nerves. It's found in the highest levels in the leaves and flowers of the plant. THC is commonly used as a recreational drug.

Jan 2, 2026 · Cannabis with high levels of tetrahydrocannabinol is associated with short-term improvement in pain vs placebo, but also increased side effects, according to a newly updated …