Summary
Xanthines (also known as substituted xanthines) are a chemical class of psychoactive substances derived from xanthine, an organic compound found in most human body tissues and fluids as well as in other organisms. Examples of xanthines include caffeine and theobromine. These are commonly used for their effects as both stimulants and bronchodilators.
Tolerance
Build-up
develops rapidly after a single use (serotonergic psychedelic)
Reset
7–14 days for baseline
Effects
Positive
- Stimulation
- Physical euphoria
Negative
- Increased heart rate
- Vasoconstriction
- Insomnia
- Nausea
- Teeth grinding
- Pupil dilation
- Increased perspiration
- Decreased appetite
Positive
- Alertness enhancement
- Euphoria
- Wakefulness
- Cognitive euphoria
- Motivation enhancement
- Focus enhancement
Negative
- Anxiety
- Talkativeness
- Time distortion
- Thought acceleration
Positive
- Increased music appreciation
- Tactile enhancement
- Increased libido
- Color enhancement
Negative
- Light sensitivity
- Appetite suppression
- Dehydration
- Disinhibition
- Drifting
- Dulled perception