Caffeine is the main drug that is in coffee.

The police also say heroin - which preceded cocaine as the main drug available in the neighborhood - is now being sold with increasing frequency.

The two main drugs made from the cannabis plant are marijuana and hashish.

Tajikistan borders Afghanistan and is one of the main drug running routes to Europe.

For four hundred years after this formulation, mercury was the main drug of choice in the treatment of syphilis.

The company faces the loss of patent protection next year on Lopid, its main cholesterol-lowering drug.

Despite all the advances of modern medicine, the main drugs used to fight pain today are essentially the same as those used in ancient times.

The drink itself became illegal in the United States when its other main drug, alcohol, was banned just a few years later.

It is one of the main drugs used for many types of cancer.

Tamiflu (oseltamivir) is the main drug in this class.