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Caffeine, explained
Short, factual guides to what's actually in your can — where caffeine comes from, what L-theanine does alongside it, and how to read a caffeinated sparkling water label.
Caffeine 101
Natural caffeine vs. synthetic caffeine
Naturally sourced caffeine comes from plants like green tea and guaraná; synthetic caffeine is made in a lab. Here's how they differ and why it matters in a can.
5 min read
Ingredient guide
What is L-theanine, and why pair it with caffeine?
L-theanine is an amino acid found in tea leaves. Learn what it is, why it's commonly paired with caffeine, and how much is in a can of Cómo No.
4 min read
Category guide
Caffeinated sparkling water: a buyer's guide
How caffeinated sparkling water compares to soda, energy drinks and coffee — plus what to check on the label before you buy.
6 min read