HHC now illegal in Ireland: What Employers need to know Randox Testing Services You might have heard of HHC (hexahydrocannabinol) showing up in vapes, gummies, and herbal mixes. It can feel a bit like cannabis, but because it's unregulated the strength and risks Preliminary pharmacokinetic and psychophysical investigations after controlled oral and inhalative consumption of hexahydrocannabinol (HHC) Scientific Reports E Cigarettes: Know the Health Risks Department of Health Delta 8 THC: What You Need to Know About This Cannabinoid It's easy to buy 'weed' like HHC, even where marijuana's illegal