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.

Sclareolide, which is thought to increase cAMP (cyclic adenosine monophosphate) levels in the body through the stimulation of the "adenylate cyclase" (AC) enzyme. This stimulation is believed to help activate increased fat burning.

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.

Synthetic Guggulsteroneswere first intended for use as a drug and is now used as a weight loss product and weight management product with the possibility of some side effects. More studies need to be done on this.