Here is a list of the 15 adverse effects you want to be wary about.
Green tea supplement pills side effects.
Swelling of your face lips tongue or throat.
A team from the arizona cancer center at the university of arizona had participants take polyphenon e with doses of 400 800 or 1200 mg egcg a day for a 1 or 4 week period.
These side effects can range from mild to serious and include headache nervousness sleep problems vomiting diarrhea irritability irregular heartbeat tremor heartburn dizziness ringing in the ears convulsions and confusion.
Taking green tea along with terbinafine lamisil can increase the risk of caffeine side effects including jitteriness headache increased heartbeat and other effects.
The antioxidants in green tea extract especially egcg seem to have favorable effects on the balance of cell production and death 27trusted source 28trusted source 29trusted source.
Green tea side effects.
Side effects of caffeine toxicity include heartburn tremor irregular heartbeat and confusion.
The green tea extract side effects in both cases included high levels of toxicity vomiting diarrhea and even death.
Green tea side effects get emergency medical help if you have signs of an allergic reaction.
However overdosing on green tea infusions may also lead to other short term side effects.
One study found that green tea is good for you only when used in moderation.
Many green tea supplements contain caffeine which itself has been associated with side effects such as anxiety increased heart rate and blood pressure dizziness ringing in the ears and the worsening of ulcer symptoms especially at these higher doses.
Green tea contains minimal amounts of caffeine typically about a third of a standard cup of coffee.
Green tea seems to reduce the absorption of iron from food.
The concentrated antioxidants in green tea supplements may cause liver damage.
Drinking too much green tea has side effects.
While it has been found to prevent heart disease and cancer it could cause liver and kidney damage when consumed in very large quantities.
Egcg in green tea binds iron causing anemia and iron deficiency.