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.

Guarana has in recent times received widespread popularity because of an energy drink. It is actually a climbing plant in the family related to maple and is native to the Amazon region, predominantly in Brazil. It is a flowering plant with big leaves, but the fruit is the most prominent component, not bigger than a coffee bean. Guarana fruit has about the double content of caffeine when compared to the coffee bean. Besides the cognitive and fatigue reducing effects of caffeine, guarana displays also other interesting properties, such as the assistance in a weight loss program; namely, guarana affects the perception of the satiation, making the person feel full sooner. Further antioxidant and antibacterial effects have been noted as well. In combination with linoleic acid, guarana has shown fat cell reduction effects in mice.

Kola Nut has a euphoric and stimulating effect on the heart and central nervous system and produces a heightened state of euphoria and well-being.

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 Yellow Hornet . 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.

Yohimbe- Basically a tree bark, Yohimbe is rich in pharmacologically active chemicals. It is commonly found in products developed for body building and enhancing male performance. The use of Yohimbe causes serious side effects too that include renal failure, seizures and in very rare cases, even death. Individuals suffering from low blood pressure, heart disease, liver or kidney disease, and diabetes should refrain from using any kind of Yohimbe supplements. Taking larger doses of Yohimbe can cause weakness, stomach disorders, fatigue, and nervous stimulation followed by paralysis. It is therefore important to avoid self-medication. Sometimes, side effects may arise even if small amounts of this supplement are taken, especially for prolonged periods. If you are already taking drugs for treating some health condition, it is best to avoid this supplement.