Caffeine may be the most popular legal addictive stimulant that is available to mankind. Besides coffee, tea, guarana and kola nut have excess amount of this xanthine alkaloid, which is actually acting as a psychoactive drug. In several plants, caffeine is an effective insect repellant, but this trimethylxanthine is deemed by the Food and Drug Administration as generally safe food substance. It is an antagonist of adenosine receptors. The effect of caffeine is individual and may more or less increase the ability to perform physical and mental labor. It reduces the effects of fatigue and may in long term help predominantly men reduce the risk of developing Parkinson’s disease. It has also been observed that caffeine has nootropic effects, furthermore, regular consumption of caffeine may significantly reduce the risk of heart diseases.

Ginger Root has been used as herbal medicine in India, Asia, and Arab countries for a long time. People in China have been using this knotted, thick, underground stem or rhizome of the plant Zingiber officinale to improve digestion for over two thousand years. Ginger was also found effective in the treatment of health conditions such as heart problems, arthritis, colic, and diarrhea. Ginger is also a popular cooking spice in different cuisines. The magic herb can also help a great deal in pregnancy, motion sickness, and cancer chemotherapy since it aids in preventing or treating nausea and vomiting associated with it. Many women consume ginger to reduce the pain during menstrual periods. Ginger is also used to reduce inflammation and combat inflammation-related problems such as arthritis and ulcerative colitis. You may buy fresh ginger root or go for other variations like ginger extracts, capsules, and oils.

Green Tea Extract is a widely consumed beverage in the world. It is well known for its antioxidant properties. It is traditionally used to treat ailments such as headaches, poor digestion, and body aches. Green tea extract is rich in catechin which increases the level of cholecystokinin that suppresses that appetite, thus promoting weight loss. It also contains Pheophytins, chlorophylls, caffeine, and carotenoids that have anti-genotoxic and antioxidant properties. It also helps in thermogenesis and in the metabolism of fat, promoting weight loss. The EGCG content protects the body from free radical damages. It also blocks the carcinogens that may cause cancer and protects the body from digestive and respiratory infections. It also has anti-bacterial properties.

Guarana- The active constituent of guarana is caffeine, which means that it should not be used alongside ephedrine as either a dietary aid or in order to stimulate performance. The American Food and Drug Administration has not tested its effectiveness or its purity as they do not class it as a drug. Guarana has many other names including Brazilian cocoa and may be a constituent of non alcoholic drinks imported from South America. Because of possible adverse reactions it is not recommended for anyone with a heart condition or who has kidney disease, high blood pressure or who suffers from anxiety.

Kola Nut is native to Africa, mainly found in the tropical rain forests. There are about hundred and twenty tree species which belong to this family, their fruit, the kola nut, being the interesting feature. It has been traditionally used for chewing, with an effect where hunger cravings subsided. The popularity of the kola nut was established by The Coca-Cola Company, which used the kola nut as an ingredient in this popular drink. Many other similar drinks and also energy drinks feature this ingredient. The kola nut, although featuring caffeine, provides a xanthine mixture with catechins which not only stimulate the central nervous system but also has analeptic and lipolytic properties, as well as chronotropic effects. Further effects include enhanced alertness, physical energy, mood and tactile sensitivity, as well as appetite suppression.

Some Unknown Ingredients, which is a common practice for many supplement manufacturers. They use ineffective common ingredients and trademark their name for them to disguse the actual low quality ingredient contained.

Yerba Matte Pronounced, YARE-ba MAH-tay, yerba mate is a shrub that belongs to the holly family. A Key Element in Estrin-D Yerba mate contains the following vitamins, minerals and additional compounds: Vitamin A to Vitamin C Vitamin E Vitamin B1 Vitamin B2 Vitamin Niacin Vitamin B5 Vitamin B complex Minerals: Calcium Iron Manganese Magnesium Potassium Phosphorus Selenium Additional Compunds: Flavonols Polyphenols Antioxidants Pantothenic Acid and more The leaves of yerba mate have been found to offer strength while the stems inspire energy.