Which of the following statements is true regarding the use of stimulants?

The statement regarding users seeking euphoria through their use is accurate because stimulants are known for their ability to enhance mood, increase energy, and produce feelings of euphoria. This is particularly true for substances like cocaine and amphetamines, where the primary appeal for many users is the intense pleasurable sensations that can be experienced.

Stimulants act on the central nervous system to increase alertness, attention, and energy, which can lead to a temporary high and heightened mood. This aspect of stimulant use is often one of the key factors driving individuals to use these substances, as the euphoria can create a reinforcing cycle of use.

In contrast, the other statements do not accurately represent the nature of stimulants. While stimulants may be perceived as safer in some contexts compared to certain depressants, safety varies significantly across different substances and their usage. The claim about their use primarily for treating psychological illnesses misrepresents their broader applications; stimulants are also used in the treatment of conditions like ADHD and narcolepsy, but they are not exclusively for psychological illnesses. Lastly, stimulants are commonly available in multiple forms, including oral tablets and nasal sprays, and are not restricted to intravenous administration.