Nitrogen makes it creamy, not stronger
Nitro Cold Brew starts with Starbucks cold brew coffee that is infused with nitrogen gas and served from a tap. The nitrogen creates a cascade of tiny bubbles and a creamy, stout-like texture without adding any cream or sweetness. The caffeine comes entirely from the cold brew base.
Starbucks lists 215 mg of caffeine in a Tall (12 fl oz) and 280 mg in a Grande (16 fl oz). That makes a Grande Nitro Cold Brew 75 mg higher than a Grande regular Cold Brew, even though both are the same volume. The nitrogen adds texture, not caffeine, so the extra 75 mg is in the coffee itself.
A strong single drink
At 280 mg, one Grande Nitro Cold Brew is already 70% of the 400 mg daily reference the FDA cites for healthy adults. It is also above the 200 mg EFSA assessed as a safe single dose for healthy adults, and EFSA notes that 100 mg close to bedtime can disturb sleep in some adults. The per-ounce caffeine is high because the drink is served without ice and without milk to dilute it.
Starbucks serves Nitro Cold Brew in Tall and Grande only, so the Grande is the most you can get in one cup.
Where the number comes from
The figures are taken from the Starbucks published nutrition page for Nitro Cold Brew, checked 19 September 2026. For a broader comparison against other brewed coffees and cold brews, see brewed coffee or Starbucks Cold Brew.