Green tea extract, also known as camellia sinesis, may produce some therapeutic effects in the prevention of strokes, MayoClinic.com reports. It also may help in the prevention of cancer and heart disease, although not enough evidence yet exists to qualify that. If you use it in small quantities, it may have therapeutic affects. If the tea comes with a caffeine additive, drinking it could become a problem as green tea already has stimulant qualities. Talk with your doctor before starting any new supplements for weight loss or for any other purpose. Diet and exercise remain the two ways to lose weight healthily and safely.
Diarrhea
Using the green tea extract supplement pills may induce a disruption of your bowels. This usually occurs, as with many supplements and medicines, when you begin your treatment with the supplement because you body requires time to adjust. You may have to go to the bathroom several times more than normal and produce watery stools, Drugs.com reports. You also may get the usual diarrhea side effect of cramping in your abdomen. Green tea extract is a natural stimulant, which causes the digestive system to speed up, which produces the diarrhea. It should stop within a few days of beginning your use of green tea extract.
Nausea
Nausea may occur when taking this supplement because your stomach may have a sensitivity to green tea extract. If you get nauseous, the feeling should occur mildly and go away as your body adjusts. Before starting any new herbal supplement, you should talk with your doctor first to get his opinion, MayoClinic.com reports. If nausea continues, seek your physician's advice.
Tremors
Tremors may occur in your body because green tea extract is a natural stimulant, Drugs.com indicates. Your body, and particularly your extremities, may shake slightly in intermittent bouts. If tremors continue, you should stop taking the tea extract pills and talk with your doctor.
Sleeping Difficulty
Green tea extract supplements may make it difficult for you to fall asleep or stay asleep, Drugs.com indicates. You may lay awake at night without being able to sleep. This occurs because of the stimulant effect of the supplement, but should cease as you adjust to the green tea extract. Talk with your doctor if insomnia continues.
Feeling Restless
The stimulant in green tea extract may cause you to feel jittery and restless, Drugs.com indicates. Restlessness may be uncomfortable, but it classifies only as a non-serious side effect of the supplement and should disappear on its own as your body adjusts.
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