The Rise of Zyn-Like Pouches for Sleep, Health, Focus, Teeth

— you can find pens that claim to deliver vitamin B12, melatonin, or vitamin C, though the science there is dubious. “There’s absolutely no evidence that you can effectively deliver vitamin B12 by heating it up and inhaling it into your blood,” Dr. Ling says. “People are willing to pay to be guinea pigs with this stuff.”

Jessica Barrington-Trimis, an continue reading …