280 calories per bottle. Caffeine Content: 91mg/20 fl oz. Mountaindew.com. For promo questions call 800-332-1741. We're here to help. Mountaindew.com. or 800.433.2652. Cash in (Subject to rules (at)pepcoin.com. Snack purchase required. Must accrue minimum balance for payment) at pepcoin.com. Cash out at with Venmo & PayPal. PayPal and Venmo are not sponsors of this promotion. Please recycle.