Has anyone noticed any bad health effects from using these pods? Do you think the burnt one's are safe? Randomized clinical studies assessing the pharmacokinetics and subjective effects of vuse alto electronic nicotine delivery systems Scientific Reports Randomized clinical studies assessing the pharmacokinetics and subjective effects of vuse alto electronic nicotine delivery systems Scientific Reports NEW: After an extensive scientific review, FDA has authorized marketing of six Vuse Alto tobacco flavored e cigarette pods and accompanying power unit. Pods are sealed, pre filled, and non refillable. https: www.fda.gov tobacco products ctp newsroom