Caffeine is a stimulant drug used for mental alertness and to accelerate energy and power. It is also used to delay muscle fatigue as it goes deep into the muscle tissues.

Ginger Root is a dietary supplement that is not only used as a spice but has had a positive effect on some types of arthritis and raynauds disease.

Green Tea Extract, a bioflavonoid rich, potent extract used primarily for fighting free radicals. It contains a high content of polyphenols, which are a class of bioflavonoids. Green tea extract contains a potent antioxidant, EGCG, which is over 200 times more powerful than vitamin E in neutralizing the pro-oxidants and free radicals that attack lipids in the brain. Green tea extract helps with thermogenesis and aids in the metabolism of fat. Green Tea has been used for years as a powerful antioxidant, it may also be helpful in shedding fat. The most obvious benefit to dieters is that it works without increasing the heart rate most often found in diet aids. The increased heart rate leaves dieters jittery and eventually, most dieters stop using the supplement and gain weight back. Now through using green tea extract, dieters get the weight loss benefits without any of the jittery effects, especially in obese individuals with hypertension and other cardiovascular complications.

Guarana is a South American climbing plant belonging to the genus of trees and shrubs called Maple. This plant is common around the Amazon and very present in Brazil. The fruit of the guarana plant is being used in that country to produce a diversity of soft drinks and beverages, having the double caffeine content of the coffee bean. Other nutrients that are contained in the seed besides caffeine are protein, fat and starch, but also adenine, choline, guanine, resin, tannin and xanthine, just to name a few. The cognitive effects of guarana are well documented, but the appetite suppressant qualities of guarana are relatively new. A study has proven that a combination of yerba mate, guarana and damiana leads to a tenfold weight loss quantity when compared with a placebo.

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- Described as an ancient drink of friendship derived from a small shrub. It is sometimes spelled as yerba mate and people drink it in order to gain energy producing properties without consuming caffeine as they would in normal tea or coffee. People believe that yerba mate is a appetite suppressant, clears the mind as well as relieving allergies, improving sleep patterns and lifting the mood, that is why it is used in Estrin-D. It is advertised as an aid to weight loss, a fortifier of the immune system, a colon cleanser and even as a means of extending life. It is prepared as an infusion, with twigs and leaves immersed in boiling water in order to produce a tisane. Traditionally it is made in a vessel which is then shared among friends.