What is an uncommon side effect of amphetamines?

Amphetamines are primarily stimulants that affect the central nervous system, leading to a range of physiological and psychological effects. Among these, decreased heart rate is notably uncommon. Typically, amphetamines tend to increase heart rate due to their stimulating properties, which enhance the release of norepinephrine and dopamine in the body, leading to an acceleration of heart activity.

In contrast, side effects such as increased appetite, sleeplessness, and dry mouth are more frequently reported among users of amphetamines. Increased appetite can occur when the effects of the drug wear off, while sleeplessness is a common side effect due to the stimulant nature of the drug. Dry mouth is also a well-documented side effect resulting from the impact of amphetamines on saliva production.

In summary, decreased heart rate stands out as an uncommon side effect because it goes against the usual stimulating effects of amphetamines, which typically lead to an increase in heart rate rather than a decrease.