How to Know if Green Tea Has Caffeine: A Comprehensive Guide
                                
                                
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                                    5 min read                                
                            
                                An 8-ounce cup of green tea typically contains between 30 and 50 milligrams of caffeine, far less than a standard cup of coffee. While most people understand that green tea contains this natural stimulant, the actual amount can vary significantly based on numerous factors that are often overlooked by consumers.