Question: how many mg of caffeine in a grande pumpkin spice latte?
Answer: Breaking Down the PSL A Grande Caffé Latte from Starbucks has 150 mg of caffeine (the equivalent of two shots of espresso), and the Grande Pumpkin Spice Latte has the same serving of caffeine. They both contain two shots of espresso (I know, I am shattering your world right now).