Matt David, head of communications at Juul, said the company’s mission was to eliminate combustible cigarettes and noted that more than 50 percent of smokers who try Juul successfully switch to e-cigarettes. Juul’s sleek devices deliver potent — and highly addictive — hits of nicotine in trendy flavors like mango and cucumber. It has changed its website and marketing to focus on smoking cessation, added a nicotine warning label and started an advertising campaign aimed at smokers. Lucy Nicotine, a nicotine gum start-up, generated investor attention in March, when it participated in Y Combinator, a start-up accelerator program, because two of its founders were well-known for their prior start... [Read more]