How is green tea extract made

Green tea has gradually become one of the most preferred everyday detox beverage Given the many health benefits that green tea provides , it is an ideal organic replacement for tea to get over energy slump and get the much-needed dose of caffeine to go on about the day. But, there are many tea lovers who are used to having their cup of tea with the creaminess of milk and sweetness of sugar. It's difficult for them to develop a taste for this rather bitter-tasting alternative.

So, most of these people who also turn health freaks, have to give up entirely on tea. But then, there are some who go for green tea extracts, usually available in a capsule form to replenish their body with the goodness of tea.

Green tea extract is a supplement derived from the green tea plant. It contains concentrated compounds of antioxidants, polyphenols, vitamins and flavonoids of green tea. If a capsule contains the same amount of active ingredients as a cup of green tea, why shouldn't you just switch to it? There are some facts you should know about green tea extracts before making a sure shot decision.

Even though green tea extracts provide the same nutritional benefits as drinking a cup of green tea, you should remember that a supplement will always remain just that - a supplement. As nutritionists promote eating protein-rich foods than relying on protein supplement capsules, same school of thought applies to any source of nutrition in your diet. Green tea extracts are supposed to contain the same amount of properties as contained in green tea leaves they are extracted from.

But, the process of extraction can leave out some content in the leaves only. What you get is a derivative, sans the complete profile of the green tea leaf. Email: ods nih. This publication is not copyrighted and is in the public domain.

Duplication is encouraged. NCCIH has provided this material for your information. It is not intended to substitute for the medical expertise and advice of your health care provider s.

We encourage you to discuss any decisions about treatment or care with your health care provider. Home Health Information Green Tea. Green Tea. Common Names: green tea. Latin Names: Camellia sinensis. Green, black, and oolong teas all come from the same plant, Camellia sinensis, but are prepared using different methods.

To produce green tea, leaves from the plant are steamed, pan fried, and dried. Tea has been used for medicinal purposes in China and Japan for thousands of years. Green tea as a beverage or dietary supplement is promoted for improving mental alertness, relieving digestive symptoms and headaches, and promoting weight loss. Green tea and its components, including epigallocatechingallate EGCG , have been studied for their possible protective effects against heart disease and cancer.

The U. Food and Drug Administration FDA has approved a topical ointment, sinecatechins brand name Veregen , which includes extracted components of green tea leaves and is used for the treatment of genital warts.

How Much Do We Know? Although many studies have been done on green tea and its extracts, definite conclusions cannot yet be reached on whether green tea is helpful for most of the purposes for which it is used. What Have We Learned? Green tea contains caffeine. Drinking caffeinated beverages throughout the day seems to prevent a decline in alertness.

One study looked at the effect of taking only a main component of green tea—EGCG—on mental capabilities. This is done to preserve important chemicals in the leaf.

Green tea can cause side effects due to caffeine. These can include anxiety, tremors, irritability, and sleeping problems. Side effects are less common with green tea than with other drinks that have caffeine. This is because the leaves are steeped for a shorter time. The fluoride content of green tea may help prevent tooth decay. But the tea also contains tannic acid. This can stain teeth.

Green tea extracts may cause liver problems. Symptoms can include yellowing of your skin or the whites of your eyes, nausea, and stomach pain. If you have these symptoms, stop using green tea and see your healthcare provider right away. The negative effects of green tea extract on the liver may depend on how much green tea extract you consume each day. Green tea may change the effects of medicines such as nadolol, a beta-blocker used for high blood pressure and heart problems.

It may keep nadolol from lowering your blood pressure as much as it should. Green tea contains small amounts of vitamin K. This means it may decrease how well blood thinner medicines work. It may change the effects of other medicines.