Delta-8 tetrahydrocannabinol (THC) products, sold in forms including vape cartridges and gummies, have raised safety concerns over product labelling, manufacturing standards and the presence of potentially harmful contaminants.
Delta-8 THC is a psychoactive compound found naturally in cannabis in small quantities. Commercial products often use cannabidiol (CBD) derived from hemp to produce more concentrated amounts of the substance.
The US Food and Drug Administration (FDA) says delta-8 THC products have not been evaluated or approved for safe use. It has also warned that some products may contain harmful by-products from manufacturing processes, while their actual ingredients and THC concentrations may differ from what their labels indicate.
Labelling and testing concerns
The appearance of a cartridge or the quality of its packaging cannot establish whether its contents are safe. Product labels, ingredient lists and laboratory reports may provide information about composition, but claims made by manufacturers should not be treated as independent proof of safety.
The FDA has raised concerns about variations in product formulations and labelling, including products marketed simply as hemp products that may contain intoxicating substances.
Consumers may also struggle to distinguish delta-8 THC products from CBD products. Although both compounds come from cannabis-related plants, CBD does not produce the same intoxicating effects as THC.
The US Centers for Disease Control and Prevention (CDC) says some products marketed as hemp or CBD may contain THC or other unwanted substances, including pesticides, heavy metals, bacteria and fungi.
Health effects remain a concern
Delta-8 THC can cause intoxication and affect judgement, attention and decision-making. The CDC says the health effects of the substance are not yet fully understood.
The FDA has received reports of adverse events associated with delta-8 THC products, including vomiting, dizziness, anxiety, confusion and loss of consciousness. Some reported cases required medical attention or hospital admission.
The agency has also warned that chemicals used to convert CBD into concentrated delta-8 THC, as well as by-products from that process, may pose health risks if they remain in the finished product.
These concerns mean that claims about a product’s purity, natural ingredients or potential health benefits require evidence rather than reliance on promotional descriptions.
The CDC also warns that cannabis oils and concentrates used in vaping may contain additives or contaminants. It says there is insufficient evidence to conclude that one method of consuming cannabis is safer than another.
