Caffeine- The bitter, white crystalline xanthine alkaloid caffeine is found in tea, coffee, soft drinks, chocolates, pain relievers, and a variety of over the counter medications. It is a psychoactive stimulant drug that causes increased alertness by stimulating the central nervous system. For the same reason, many people feel more energetic after consuming it. It even elevates the mood but these effects do not last for long. The effects of caffeine usually last for about five to six hours, though caffeine sensitivity varies from person to person. It has been found that people who consume lot of caffeine on a daily basis soon develop less sensitivity and may need to increase their intake to enjoy the same effect. Being a diuretic, a person consuming caffeine may have to urinate more often.

Citrus Aurantium is a fruit from the citrus family. Although later replaced by the sweet orange in recognition, it has retained many practical uses both in home remedies and in food. Citrus Aurantium boosts up the metabolism, which converts fat deposits into energy. Extensive use may help to control weight and hold back the effects of obesity. It can work as an appetite suppressant to restrain overeating. Citrus Aurantium can help to reduce chest congestion and coughs. Citrus Aurantium is a potent energy booster.

Synthetic Guggulsterones are derived from a herb, commiphora mukul, which has been proven to restore lagging metabolic rate brought about by dietary caloric deficiency, such as a diet low in carbohydrates. Though it has cholesterol lowering ability, it is also known as powerful weight loss agent due to the increased conversion of the inactive thyroid hormone T4 into its active part T3 in the liver. Furthermore, Guggulsterones are also known to stimulate the thyroid directly by enhancing TSH (Thyroid Stimulating Hormone) production. This is especially true for two specific guggulsterones codenamed Z and E.

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.