Caffeine is the most widely available legal psychoactive stimulant drug. Also known as theine, methyltheobromine and trimethylxanthine, this xanthine alkaloid is not only found in coffee beans, but also in guaranine that is derived from guarana, mateine derived from mate, theine which is found in various teas and the kola nut, which is the base flavor of various Cola soft drinks. It stimulates the central nervous system, where it restores alertness and wards off drowsiness. Caffeine is also know to display certain diuretic properties, is an ergogenic, an atagonist of the adenosine receptors, and a cAMP levels increasing factor. It seems that caffeine helps prevent the onset of Parkinson’s disease and in the long run lowers the possibility of developing a heart disease.

Camellia Sisensis .

Capsaicin is the chief capsaicinoid found in chilli peppers that belong to the group Capsicum. This phytochemical causes a burning sensation in any tissue that comes into contact. It is used in the preparation of varied topical ointments developed to alleviate the pain of peripheral neuropathy. The typical burning sensation is caused when capsaicin interact with the nerve cells. It is also believed that intake of capsaicin can cause a euphoric sensation due to the release of endorphins. As per studies, capsaicin can also alleviate symptoms associated with arthritis, improve flexibility of the joints, reduce psoriasis symptoms, and protect against gastric ulcers. And that's not all - research suggests that a combination of capsaicin and green tea can be effectively used in weight management too. This is because this combination promotes a feeling of fullness.

Polyphenols.

Yohimbe is an evergreen tree which grows in Africa. Traditionally yohimbe is used as an aphrodisiac but it also acts as a powerful antioxidant. It’s usually taken in the form of tea or capsules or tablets. It is also used for impotence, depression, sexual problems in both men and women, in high blood pressure, low blood pressure and for chest pains. Yohimbe bark is also used to treat fever, cough and leprosy. It is also used as an anesthetic to dilate pupil, to prevent heart disease and as a hallucinogen. Yohimbe also helps in weight loss as it contains nor-epinephrine which increases metabolism. Yohimbine an active ingredient taken from bark of yohimbe is used in drugs to treat various disorders.