Most herbal teas are completely caffeine-free, containing 0 mg per cup. Unlike black, green, white, and oolong teas, which all come from the caffeine-containing tea plant, herbal teas are made from dried fruits, flowers, spices, or leaves of other plants that never produced caffeine in the first place. But there are a few notable exceptions worth knowing about.
Why Most Herbal Teas Have No Caffeine
Caffeine is a compound that certain plants produce naturally as a defense against insects. The tea plant is one of them, which is why every variety of “true” tea (black, green, oolong, white) contains caffeine. Herbal teas, by contrast, are infusions made from plants that simply don’t make the stuff. There’s no processing step that removes caffeine. It was never there to begin with.
Common herbal teas that are naturally caffeine-free include:
- Chamomile
- Peppermint
- Hibiscus
- Ginger
- Rooibos
- Lemongrass
- Ashwagandha
Rooibos deserves a special mention because it looks and brews like a traditional tea, with a rich amber color and a slightly sweet, earthy flavor. It comes from a shrub native to South Africa that contains no caffeine and is also low in tannins, the compounds in regular tea that can taste bitter or interfere with iron absorption. Honeybush, a close botanical relative of rooibos, shares these same qualities. Both are popular choices for people who want something that feels like tea without any stimulant effect.
Herbal Teas That Actually Contain Caffeine
A handful of plants used to make herbal infusions do contain caffeine, and their teas can deliver a noticeable energy boost. These are the main ones to watch for.
Yerba mate is the most well-known. Made from the leaves of a South American holly tree, a typical 8-ounce cup contains roughly 30 to 50 mg of caffeine, putting it in the same range as green tea. It’s widely consumed in Argentina, Brazil, and Uruguay, often from a shared gourd.
Guayusa comes from a related holly species native to the Amazon rainforest. One teaspoon (about 2 grams) of guayusa leaves yields around 38 mg of caffeine, and a full brewed cup can climb higher depending on how long you steep it.
Yaupon holly is the only caffeine-containing plant native to North America. Its leaves brew into a mild, slightly grassy tea with a caffeine content similar to green tea. It has seen a resurgence in specialty tea shops in recent years.
If you’re specifically trying to avoid caffeine, check the ingredient list for any of these three. They’re sometimes blended into “energy” or “focus” herbal tea blends without being prominently labeled as caffeinated.
Blended Teas Can Contain Small Amounts
Even when the base herbs are caffeine-free, certain blend ingredients can introduce trace amounts. Chocolate or cacao nibs are the most common culprit. Cocoa-based herbal blends usually contain only a few milligrams of caffeine per cup, along with a related compound called theobromine that has a milder, longer-lasting stimulant effect. For most people, this amount is too small to notice. But if you’re highly sensitive to caffeine, it’s worth scanning the ingredients of dessert-style herbal teas like “chocolate mint” or “cacao chai.”
Some herbal blends also include a small amount of decaffeinated black or green tea for flavor. Decaffeinated tea isn’t the same as caffeine-free. The decaffeination process removes most but not all caffeine, leaving behind roughly 2 to 15 mg per 8-ounce cup. That’s a fraction of what regular tea contains, but it’s not zero.
Caffeine-Free vs. Decaffeinated: The Difference Matters
If you’re avoiding caffeine for medical reasons, pregnancy, or because you’re sensitive to it, the distinction between “caffeine-free” and “decaffeinated” is important. A caffeine-free herbal tea made from chamomile, peppermint, or rooibos contains no caffeine at all, because the plant source never contained any. A decaffeinated tea started with caffeine and had most of it chemically removed, but a small residual amount remains.
People with caffeine sensitivity can react to surprisingly small doses. For them, a purely herbal, caffeine-free tea is a safer choice than decaffeinated coffee or decaffeinated black tea. The simplest way to tell the difference on a package: look for the words “naturally caffeine-free” rather than “decaffeinated.” The first means the ingredients never had caffeine. The second means caffeine was reduced but not eliminated.
How to Check Any Herbal Tea
The fastest way to know whether your herbal tea contains caffeine is to look at the ingredient list rather than the front of the box. If every ingredient is a familiar herb, fruit, or spice (chamomile, peppermint, cinnamon, dried berries), you’re almost certainly at 0 mg. If you see yerba mate, guayusa, yaupon, green tea, black tea, white tea, cacao, or “natural caffeine,” the tea contains some amount of caffeine.
Single-ingredient herbal teas are the simplest to verify. A box of pure peppermint or pure rooibos will always be caffeine-free. The more complex the blend, the more carefully you should read the label, especially if the brand markets the tea as “energizing” or “uplifting.” Those words often signal added caffeine from one of the holly-family plants or from tea leaf extracts.