Any high-percentage spirit can be used, but neutral tasting spirits such as grain alcohol or vodka are best
Henninger S, Fischer R, Cornuz J, Studer J, Gmel G
Conditions that cause xerostomia, as post-radiotherapy states and certain autoimmune pathologies, such as Sjogren's Syndrome, also predispose to the appearance of black hairy tongue [6]
Exposure and response to current text-only smokeless tobacco health warnings among smokeless tobacco users aged 18 years, United States, 2012-2013
A November 2025 study revealed that pouches containing 6-methyl nicotine exhibited a Hazard Quotient (HQ) for heart-rate increase ranging from 74 to 381, significantly higher than standard nicotine pouches