Caffeine From All Sources: 150 mg per can. Juice. Follow Halloween each year friends and family gather to celebrate Dia de Los Muertos. Marigold, mysticism and memories combined with food and drink entice the souls of the departed to join the party. Mango Loco is a heavenly blend of exotic juices certain to attract even the most stubborn spirit. Crazy good taste with just enough of that Monster magic to keep the party going for days - unleash the beast! monsterenergy.com.