HHC

HHC (hexahydrocannabinol) is a hydrogenated form of THC found in only trace amounts in cannabis, so commercial HHC is manufactured, typically from hemp-derived cannabinoids. It produces a THC-like intoxication and became popular as a hemp-derived product after 2018, sold in vapes, gummies, and other formats. It is one of several novel cannabinoids marketed as legal alternatives to marijuana.

HHC activates the CB1 cannabinoid receptor, the same target as delta-9 THC, which is why it is intoxicating; its effects are broadly THC-like. Commercial HHC is a mixture of two closely related forms that differ in how strongly they bind the receptor. Because it is manufactured by hydrogenating cannabinoids, finished products can contain catalysts, by-products, and residual chemicals from that process.

Effects are described as similar to a THC high — relaxation, euphoria, altered perception, increased appetite — with the usual dry mouth, red eyes, and impaired coordination. Users often describe it as somewhere between delta-8 and delta-9 in intensity. As with other poorly dosed hemp cannabinoid products, higher amounts can bring anxiety, paranoia, and rapid heart rate.

HHC carries THC-like acute risks — anxiety, paranoia, rapid heart rate, impaired coordination, and over-intoxication at higher doses, especially with edibles — layered on top of a near-total absence of human safety research, so its longer-term and higher-dose risks are essentially unknown. Because it is chemically manufactured from other cannabinoids, products can contain hydrogenation catalysts, residual solvents, by-products, and unlabeled amounts of other cannabinoids, and independent testing repeatedly finds inconsistent and mislabeled potency. Candy-like edibles pose a serious accidental-poisoning risk to children. As with all these products, content and purity cannot be assumed. Keep away from children; if a child ingests a product, or anyone experiences severe distress, chest pain, or cannot be roused, call 911, and Poison Control at 1-800-222-1222 can advise. This page has not yet been medically reviewed.