Herbal Teas & Extracts
This section is about the form an herb comes in: a tea, a tincture, an extract or a capsule. The same plant can behave differently in each one, and a study of a standardized extract does not tell you what a cup of tea does. For the plant itself, see Herbs & Botanicals.
Herbal teas are not "harmless because they are diluted". Some contain licorice or senna, some interact with medicines, and "detox" and "slimming" teas can be dangerous. Each page says what research exists on the actual preparation, and where it does not exist we say so.
Herbal Tea & Extract Safety
- A tea is not automatically harmless. Licorice root can affect heart rhythm and blood pressure, and herbs can interact with prescription medicines.
- "Detox", "slimming" and laxative teas can cause dehydration, low sodium and laxative dependence. They are not a safe way to lose weight.
- Tinctures and some extracts contain alcohol. Ask a pharmacist if you cannot have alcohol or take medicine that interacts with it.
- Ask a pharmacist or clinician before giving any herbal drink to a baby or child, or if you are pregnant, breastfeeding or having surgery. In the US, Poison Control is 1-800-222-1222.
Explore herbal teas
What Is Herbal Tea?
Tisanes vs true tea, caffeine, and why preparation changes what you get.
How Herbal Tea Is Prepared
Infusion, decoction and maceration: EU definitions, times and storage.
EU Monograph Tea Amounts
What EU herbal monographs say about tea amounts and time limits.
Herbal Extracts & Tinctures
Understand extracts: tinctures, extract ratios, dry extracts and labels.
Herbal Teas by Wellness Goal
What research shows for sleep, nausea, digestion and blood pressure.
Detox & Weight Loss Teas: Claim Check
A claim check on detox, slimming and laxative teas.
Quality, Labels & Product Selection
Botanical names, blends, hidden caffeine and standardization.
Comparisons
Herbal vs true tea, and tea vs tincture vs capsule.
Tea & Extract Research
How much research tests the tea itself.
Featured guides
Our first tea guides are being written and reviewed. We publish a guide only when it is sourced and ready.
Frequently asked questions
What is herbal tea?
An infusion of plants other than Camellia sinensis; a tisane. [1] See What is herbal tea.
Is herbal tea safe?
Not automatically. Licorice and senna teas have important cautions, and some herbs interact with medicines. See Safety. [2]
Do detox teas work?
NIH's NCCIH found no compelling research that detox diets work, and laxative teas can be harmful. [3]
Is a tincture the same as a tea?
No. A tincture is a liquid extract, often preserved in alcohol or glycerin. [4]
References
- Huda HS, Majid NBA, Chen Y, et al. Exploring the ancient roots and modern global brews of tea and herbal beverages: A comprehensive review. Food Sci Nutr. 2024. PubMed 39479640.
- National Center for Complementary and Integrative Health (NIH). Using Dietary Supplements Wisely. Page last updated January 2019.
- National Center for Complementary and Integrative Health (NIH). "Detoxes" and "Cleanses": What You Need To Know.
- Ahmed S, Alsharif KF, Aschner M, et al. A deep dive into herbal extraction: Techniques, trends, and technological advancements. S Afr J Bot. 2026. PubMed 41716686.
Content last updated . This section has not been medically reviewed.