Barley Rice Fiber is a soluble lignin fiber that may also act as an antioxidant.

Caffeine is a stimulant that is used to stay awake and it gives mental alertness from fatigue. This is used as an adjunct for pain relief and also as energy accelerates. Caffeine is a non-prescription drug easily available as over the counter medication and comes in combination to acquire relief from headache and pain. Caffeine increases the mental alertness by offering the required energy for exercise training and weight loss. Caffeine cannot be considered as a mere stimulant as it reaches deep into muscles and provides power that is long lasting. Caffeine taken before any work out is also great as it fights the fatigue and keeps the person ready for the workout. Dieters also find caffeine as the solution as they feel sluggish. This is a no-calorie stimulant and does its job effectively and quickly. Caffeine anhydrous is found even in one or two coffee cups. However, this limitation is recommended as excess caffeine may result in irritability, rapid heart beat, nervousness and sleeplessness.

Guarana is a climbing plant of the Sapindaceae family native to the Amazon basin. Guarana is best known for its fruit and seeds. Guarana extracts contain naturally high amounts of caffeine which the plant uses in defense against pathogens. Its extracts are a natural and abundant source of caffeine in most parts of the world. It is added to soft drinks, herbal tea, energy shots and used in capsules. The extracts have a positive effect on cognition and they also increase memory retention and physical endurance. A 2007 study on human pilots showed its positive effects on memory, alertness and mood. It is also reported to have antioxidant and antibacterial effects.

Pausinystalia Bark.

Perwinkle Plant- The periwinkle plant that has a significant medicinal use is the species Vinca minor, commonly known as lesser periwinkle. The plant is widely distributed across southern Europe, Netherlands, Southwestern Asia, Portugal and France. The subshrub and herbaceous plant has evergreen leaves that are used medicinally because of the active component vincamine. Vincamine is potent peripheral vasodilator that increases the lumen size of blood vessels letting blood flow more freely. This in turn increases the oxygenation of tissues, even the brain. This indole alkaloid then relieves hypertension through decreasing peripheral vascular resistance. Furthermore, it has nootropic properties that enhance memory and cognition. The interplay of vincamine in the production of neurotransmitters may be the reason for its nootropic activity.