Most herbal teas contain zero caffeine. Unlike black, green, or white tea, herbal teas aren’t made from the tea plant (Camellia sinensis), which is the natural source of caffeine in traditional tea. Instead, herbal teas are blends of dried herbs, flowers, fruits, and spices steeped in hot water. A cup of chamomile, peppermint, rooibos, or hibiscus tea is naturally caffeine-free, not just low in caffeine.
That said, a few herbal teas break this rule in a big way. Some plants outside the tea family produce their own caffeine, and if your “herbal tea” contains one of them, you could be drinking a significant dose without realizing it.
Why Most Herbal Teas Have No Caffeine
Caffeine in tea comes specifically from the leaves of Camellia sinensis. Black tea, green tea, white tea, and oolong are all the same plant processed differently, which is why they all contain caffeine in varying amounts. Herbal teas, sometimes called tisanes or herbal infusions, skip that plant entirely. When your tea is made from ingredients like ginger root, lemon balm, lavender, or dried berries, there’s simply no caffeine-producing plant in the mix.
This makes herbal tea fundamentally different from decaffeinated tea. Decaf black or green tea still contains roughly 2 milligrams of caffeine per cup because the decaffeination process can’t remove it all. A true herbal tea made from caffeine-free plants has none to begin with.
Herbal Teas That Do Contain Caffeine
A handful of plants outside the tea family naturally produce caffeine, and teas made from them can pack a real punch. The most common ones you’ll encounter are:
- Yerba mate: Made from the leaves of a South American holly plant, yerba mate is one of the most popular caffeinated herbal teas worldwide. A typical cup contains around 30 to 50 milligrams of caffeine, though some preparations go higher. That’s comparable to a cup of green tea and about half the caffeine in a standard cup of coffee.
- Guayusa: Another South American plant closely related to yerba mate. A single teaspoon (about 2 grams) of guayusa leaves yields roughly 38 milligrams of caffeine, putting it in a similar range.
- Yaupon holly: Native to the southeastern United States, yaupon is the only caffeine-producing plant indigenous to North America. It’s less common on store shelves but has been gaining popularity, and its caffeine content is in the same general ballpark as yerba mate.
These are all marketed as herbal teas because they aren’t made from Camellia sinensis. But in terms of caffeine, they behave much more like traditional tea than like chamomile.
Hidden Caffeine in Blended Teas
Even if you pick a tea labeled “herbal,” check the ingredient list. Manufacturers sometimes add caffeine-containing herbs like yerba mate or guayusa to blends marketed for energy or focus. A box that says “herbal tea” on the front could still contain 30 or more milligrams of caffeine per cup if one of these ingredients is mixed in. Some blends also include green tea leaves or matcha alongside herbal ingredients, which moves the product out of the caffeine-free category entirely.
If you’re avoiding caffeine for sleep, pregnancy, or sensitivity reasons, the ingredient list matters more than the word “herbal” on the label. Look for packaging that explicitly says “caffeine-free” rather than assuming all herbal teas qualify.
How Brewing Affects Caffeine in Caffeinated Herbals
If you’re drinking one of the caffeinated herbal teas like yerba mate or guayusa, how you brew it changes the caffeine you extract. Hotter water pulls caffeine out faster: steeping at 160°F to 175°F for 3 to 5 minutes delivers a full dose. Water below 150°F won’t extract flavor or caffeine efficiently, and extending the steep time only partially compensates.
Cold brewing takes much longer, typically 10 minutes or more, to reach similar extraction levels. The difference between hot-brewed and cold-brewed caffeine content in the same tea can be noticeable, so if you’re counting on that energy boost, hot water is the more reliable method.
Quick Caffeine Comparison
To put herbal tea in context with other drinks:
- Chamomile, peppermint, rooibos, hibiscus: 0 mg caffeine
- Decaffeinated black or green tea: about 2 mg
- Yerba mate or guayusa: 30 to 50 mg
- Green tea: 25 to 50 mg
- Black tea: 40 to 70 mg
- Brewed coffee: 80 to 100 mg
For the vast majority of what people think of as herbal tea, the answer is simple: zero caffeine, no exceptions. The only time you’ll find caffeine in an herbal tea is when the blend includes a naturally caffeinated plant like yerba mate or guayusa, and the label will list it as an ingredient if it’s there.