Green tea is a metabolic stimulator and diuretic, which work together to help weight loss, making it a popular ingredient in weight-loss supplements. The least processed form of tea, green tea is said to have many beneficial properties – namely, its protection against certain cancers, that it promotes a healthy heart and also helps boost the metabolism.
While it contains caffeine (which is said to help release fatty acids into the blood to be used as energy) it is only about half of the caffeine you would get in coffee. This lower level of caffeine often means that users don’t experience a raised heart rate that often goes with many diet pills.
As green tea has a minimal amount of processing done to it, this allows it to keep its vital substances called catechin polyphenols. These work alongside other chemicals in the body to raise levels of thermogenesis and fat oxidation, where the body then burns fat.
Dosage: If taking a green tea extract, follow the manufacturers directions, as strengths often vary. The typical dose is anywhere between 300mg and 400mg. If you are drinking the tea, then three to four cups per day is standard.
Green Tea Side Effects: As green tea contains caffeine, many of the side effects associated with caffeine also apply to green tea. These include insomnia, restlessness, irritability and heart palpitations. Excess consumption can lead to either constipation or diarrhea. These side effects should only occur if the user has taken excessive amounts of green tea, and should not be as severe as if caffeine was being taken.
Precautions: People suffering from the following ailments should limit their consumption and use of green tea: weak heart, stomach problems, kidney problems, overactive thyroid and panic/anxiety attacks. Pregnant or nursing mothers should not take green tea at all. Also avoid using this supplement if you are taking drugs such as antacids, antidepressants and prescription painkillers.