1.   We knew about his precarious health, but now we have records of the extent of his amphetamine use.

2.   Amphetamine use is a mushrooming social problem in Thailand.

3.   Symptoms such as violence, injuries due to impairment of judgment and psychiatric conditions are also associated with amphetamine use, he said.

4.   The country is known as a heroin smuggling center and amphetamine use has reached epidemic proportions.