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A standard 12-ounce can of Dr. Pepper contains about 41 to 42 mg of caffeine. For a 20-ounce bottle, that works out to roughly 68 mg.

A large McDonald’s Diet Coke (32 fl oz) contains roughly 122 mg of caffeine, based on the standard 46 mg found in a 12 oz serving.

A 14 oz cup of brewed coffee typically contains 210 to 295 mg of caffeine, depending on the beans and brew strength.

A large McDonald’s fountain Coke (32 oz) contains about 90.6 mg of caffeine, though levels can vary by location and fountain calibration.

A 12 oz can of regular Pepsi contains 38 mg of caffeine, less than half the amount in a standard 8 oz cup of coffee.

A standard 12-ounce can of Coca-Cola contains about 34 mg of caffeine, while the same size Diet Coke has 42 mg.

A 12‑ounce can of regular Dr. Pepper contains about 41 to 42.6 mg of caffeine, placing it between Coca‑Cola Classic and Mountain Dew.

A standard milk chocolate bar contains about 9 mg of caffeine, while dark chocolate (70-85% cacao) has around 23 mg per ounce.

A large (24 fl oz) Dunkin’ Cold Brew contains roughly 260 mg of caffeine, though some third-party analyses report closer to 347 mg.

A 12-ounce can of Diet Coke contains 46 milligrams of caffeine, according to Coca-Cola’s official.