Not everyone experiences side effects, and there isn’t enough evidence to predict exactly who will. If you try the tea, notice how you feel rather than assuming a reaction is part of a wellness routine.
Digestive Discomfort
Dandelion can cause an upset stomach, indigestion, heartburn or diarrhea. Memorial Sloan Kettering’s dandelion guide lists heartburn, stomach ache and mild diarrhea among possible side effects, with diarrhea associated with higher amounts.
These symptoms don’t prove dandelion caused them. A blend may contain other ingredients, and meals, medications or unrelated factors can also affect digestion. If discomfort starts after drinking the tea, stop drinking it and talk with a healthcare provider if it persists, worsens or concerns you.
There’s no need to keep drinking a tea that makes you feel uncomfortable. In particular, don’t assume loose stools mean the tea is “cleansing” your body.
More Frequent Urination
Dandelion may have a diuretic effect, meaning it can increase urine production. The effect isn’t predictable for every person or every preparation, and drinking any beverage can also make you need the bathroom.
If you notice more frequent urination, consider how the tea fits into your day. A drink close to bedtime may be inconvenient, and frequent bathroom trips are a reason to reassess the routine rather than a sign that it’s working.
This is especially relevant if you take a diuretic, sometimes called a water pill. Check with your healthcare provider or pharmacist before combining it with dandelion.
Allergic Reactions
Dandelion belongs to the daisy family. People who are allergic to related plants, including ragweed, chrysanthemums, marigolds or chamomile, may also react to dandelion, although evidence about related-plant allergies is mixed. An allergy to one related plant doesn’t guarantee a reaction, but it’s a good reason to ask a healthcare provider before trying the tea.
Possible reactions include itching, a rash or hives. Touching the plant can also cause skin irritation, though a reaction from handling a plant doesn’t establish exactly how someone will respond to a brewed tea.
A severe allergic reaction needs emergency attention. If you develop trouble breathing, throat tightness, or swelling of your lips, mouth, tongue or throat, stop consuming the tea and call 911. WebMD’s safety guidance also identifies dizziness or fainting as possible signs of a serious reaction.
Bottom line: Digestive discomfort, increased urination and allergic reactions are possible, but severe breathing problems or swelling require emergency care.
