Coat of arms. This article is about coat of arms which is only an element of an achievement (heraldic symbol); the expression 'coat of arms' is often erroneously used to refer to the whole achievement . For the whole heraldic symbol, see achievement (heraldry).
The effects of this herbal stimulant are similar to caffeine. Ginkgo, also known as ginkgo biloba, is a well-known type of natural stimulant. The stimulant properties of this plant are said to improve circulation and brain function. Many physicians recommend ginkgo supplements to prevent memory and concentration problems associated with age.
Stimulants are drugs that stimulate the Central Nervous System. These substances tend to increase alertness and physical activity. They include Amphetamines, Cocaine, Crack and some inhalants like Amyl or Butyl Nitrites. Caffeine (present in tea, coffee and many soft drinks) is also a mild stimulant drug.