How Much Caffeine is in Instant Black Tea Powder?
                                
                                
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                                    4 min read                                
                            
                                While brewed black tea can contain between 25-48 mg of caffeine per 8-ounce cup, the caffeine concentration in instant black tea powder varies by brand and serving size. The precise amount depends on the tea's origin, processing, and how it is prepared, making label-reading crucial for consumers.