0 calories. 0 fat. 0 artificial colors. 0 sugars. 100% natural caffeine. One can contains 250 mg of caffeine from all sources. The FDA has stated that consumption of up to 400 mg of caffeine per day from all sources is not associated with adverse health effects in healthy adults. Zro Performance Nootropic by Ignite Ltd. Per 16 fl. oz.: Alpha-GPC (L-Alpha glycerylphosphorylcholine) 300 mg; L-Tyrosine 250 mg; Natural Caffeine (from green coffee beans) 250 mg. Contains 250 mg of total caffeine per 16 fl oz. serving. Focus. Mood. Vitality. Performance. To report a serious adverse event or obtain product information contact: (866)446-4830. Please recycle.