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Yes, Starbucks VIA Refreshers contain caffeine from green coffee extract—roughly 35–55 mg when mixed as directed.

Yes, Starbucks Mocha Frappuccinos contain caffeine from Frappuccino Roast coffee; a grande has about 100 mg.

Yes, Dunkin’ Lemonade Refreshers contain caffeine from green tea extract; amounts vary by size and flavor.

No, apple juice usually doesn’t help sulfur burps; its fructose and sorbitol can ferment and ramp up hydrogen sulfide gas.

Most Starbucks teas contain caffeine; herbal blends like Passion Tango and Mint Majesty are caffeine-free.

Yes, Starbucks cappuccinos contain caffeine from espresso shots, and the amount depends on size and any extra shots.

Yes—Dunkin’ Refreshers are made with green tea extract, so most flavors contain moderate caffeine.

No, the Starbucks Vanilla Bean Frappuccino has 0 mg of caffeine unless you add espresso, matcha, or chocolate add-ins.

Yes, Starbucks Strawberry Acai Lemonade Refreshers contain caffeine from green coffee extract, with mild amounts per size.

Yes, Starbucks Summer Refreshers contain caffeine from green coffee extract; a grande has about 45–55 mg depending on flavor and recipe.