When to Seek Medical Help After an Herbal Tea or Extract
Clear steps for a reaction after an herbal tea, tincture or extract: when to call 911, when to call Poison Help, which signs need a same-day clinician, and what to bring.
Content last updated . This page has not been medically reviewed.
Safety first. Natural products can cause side effects and interact with medicines. Read herbal tea and extract safety before you use anything on this page.
Call 911 first if any of these happen (US)
- Signs of a severe allergic reaction (anaphylaxis): swelling of the face, eyes or tongue; difficulty breathing, coughing, wheezing or high-pitched breathing sounds; dizziness or fainting. MedlinePlus says symptoms develop quickly, often within seconds or minutes, and to call 911 or the local emergency number immediately. [1]
- Collapse, a seizure, trouble breathing, or a person who cannot be woken. Poison Control's site says to call 911 now in these cases. [2]
- A skipping or irregular heartbeat with lightheadedness or fainting, especially after heavy licorice or laxative-type tea. MedlinePlus says a large drop in blood potassium may lead to abnormal heart rhythms that can make you feel lightheaded or faint, and a very low level can stop the heart. [3]
If you are outside the US, use your local emergency number; see emergency quick reference and Poison Help by country.
Call Poison Help if you think someone swallowed something harmful
In the US, Poison Help is 1-800-222-1222. Poison Control says the service is free, expert and confidential. [2] Use it for a child who swallowed a tincture or extract, for someone who drank a tea made from a plant they were not sure about, or for any case where you cannot tell whether an amount or an ingredient is harmful. NHS notes that symptoms of poisoning may take a few hours or days to start, so it is important to get advice quickly, and says not to try to make someone sick. [4] See Poisoning: what to do first and plant and mushroom poisoning. Never rely on a photo or app to identify a plant.Contact a clinician the same day for these
These signs are not always an emergency, but they should not wait.| Sign after tea or extract | Why it matters, according to the source | Related tea |
|---|---|---|
| New muscle weakness or spasms, palpitations (skipped heartbeats), unusual tiredness | Possible low potassium. MedlinePlus lists these symptoms and names laxative overuse among causes. [3] Case reports describe severe low potassium after heavy licorice tea use. [5] | Licorice root tea, senna and laxative teas |
| Yellow skin or whites of the eyes (jaundice), especially with darker urine or pale stools | NHS says jaundice can be a sign of something serious such as liver disease, so you need to get urgent medical help; darker urine and paler stools may go with it. [6] NIH says liver injury was reported in very rare cases with valerian. [7] A case report describes acute liver failure after very heavy, long-term senna tea use. [8] | Herbal tea, liver and kidneys |
| Dark, strong-smelling urine, dizziness, a dry mouth, passing urine less often | NHS lists these as signs of dehydration, which is more of a risk for babies, children and older adults. [9] | Diuretic teas |
| A rash, itching or mouth swelling that is mild | A possible allergy. Do not drink the tea again until a clinician has advised; watch for any worsening. See the allergy page. | Allergy and cross-reactions |
Contact the prescriber or pharmacist if a tea might be interacting with a medicine. Do not stop a prescribed medicine on your own; ask first. The medicine interactions guide explains how interaction reports work.
What to bring or do
- The product. NHS advises taking the substance or its packaging to show doctors, if possible, when poisoning is suspected. [4] For a tea or extract that means the box, bag or bottle with the ingredient list and botanical names, plus how much was used and when.
- A medicine and supplement list. A printable template is in printable medicine and supplement list.
- Notes on the time of the first symptom and what you drank or ate.
- Report it. US readers can report a side effect as described in reporting a side effect in the US, and what to do after a reaction lists next steps.
Who needs extra care
Babies, children and older adults are more at risk of dehydration. [9] Tinctures and extracts are concentrated, so a child swallowing a bottle is a poisoning question, not a "tea" question; call Poison Help. See children and teens, older adults and pregnancy and breastfeeding. If you are in a crisis or thinking of harming yourself, call or text 988 in the US (Suicide & Crisis Lifeline).What this page cannot tell you
It cannot diagnose a cause. A reaction may come from the plant, a mislabeled ingredient, a contaminant or something else you ate. See adulteration, mold and mislabeling. When in doubt, treat the symptom, not the tea, as the question for a clinician.Frequently asked questions
When should I call 911 after drinking herbal tea?
Call if there is swelling of the face, eyes or tongue, trouble breathing, wheezing, fainting, collapse, a seizure, or if the person cannot be woken. [1][2]
What is the Poison Help number?
In the US it is 1-800-222-1222. [2] For other countries, see Poison Help by country.
Can a herbal tea cause liver injury?
Reports exist for some herbs: NIH mentions very rare liver injury with valerian, and a case describes liver failure after very heavy senna tea use. [7][8] Yellow skin or eyes need urgent medical care. [6]
What should I take to the doctor?
The product or its packaging with the ingredient list, a list of your medicines, and notes on timing. [4]
Should I just stop drinking the tea?
A case report of heavy licorice tea use describes electrolyte and blood pressure problems that normalized after the licorice was stopped. [5] Whether and when to stop a particular product is a question for the clinician or pharmacist. Do not stop a prescribed medicine on your own; ask the prescriber or pharmacist.
References
- MedlinePlus (U.S. National Library of Medicine). Anaphylaxis. Read 2026-10-23.
- Poison Control (poison.org). Poison Control: your trusted resource. Read 2026-10-23.
- MedlinePlus (U.S. National Library of Medicine). Low blood potassium. Read 2026-10-23.
- NHS (England). Poisoning. Read 2026-10-23.
- Guarneri C et al. Pseudo-Hyperaldosteronism After the Ingestion of Licorice Tea: A Case Report. Cureus, 2026 (single case). Read 2026-10-23.
- NHS (England). Jaundice. Page last reviewed 22 January 2024. Read 2026-10-23.
- National Center for Complementary and Integrative Health (NIH). Valerian: Usefulness and Safety. Read 2026-10-23.
- Vanderperren B et al. Acute liver failure with renal impairment related to the abuse of senna anthraquinone glycosides. Ann Pharmacother, 2005 (single case). Read 2026-10-23.
- NHS (England). Dehydration. Read 2026-10-23.