Tea + lemonade + energy. Non carbonated. 10 calories per serving. Monster Rehab Energy Blend: Glucose, taurine, panax ginseng extract, caffeine, quercetin, l-carnitine, glucuronolactone, guarana extract, inositol. Caffeine from All Sources: 83 mg per 8 fl. oz. serving (161 mg per can). monsterenergy.com. Facebook. Instagram. Twitter. YouTube.