Save big with the latest Blu coupons, promos and deals, updated daily at TheCoupon.Co. UNDERAGE SALE PROHIBITED This product may be hazardous to health and is intended for use by adult smokers. Keep out of reach of children. blu products with nicotine e-liquid are not suitable for use by: persons under the age of 21, pregnant or breastfeeding women, or persons who are sensitive or allergic to nicotine, and should be used with caution by persons with or at a risk of an unstable heart condition or high blood pressure.