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An 8-oz mug of Earl Grey usually lands around 30–60 mg of caffeine, shifting with leaf dose, steep time, and cup size.

A medium Dunkin iced latte lists 166 mg of caffeine; small lists 118 mg and large lists 252 mg, with normal store-to-store swings.

A medium Dunkin cold brew (24 oz) sits around 260 mg of caffeine, with smaller cups lower and the largest cup close to the mid-300s.

A standard doppio espresso often lands around 120–140 mg of caffeine, yet real-world pours can swing a lot based on dose, bean, and shot size.

A standard 12-oz can of Dr Pepper has 41 mg of caffeine.

A Double Espresso Chiaro usually lands around 90–150 mg of caffeine per 80 ml cup, with your exact number shaped by the blend and extraction.

A 20-oz Diet Coke bottle lands near 77 mg of caffeine when scaled from 46 mg per 12 oz.

Caffeine-free Diet Coke is made to have 0 mg caffeine per serving, with only rare trace carryover possible from ingredients.

One 12-fl-oz can of Diet Pepsi has 34 mg of caffeine.

A large Dunkin cold brew (32 oz) lands near 347 mg of caffeine, which is a big dose in one drink.