Summary
8-Chlorotheophylline (1,3-dimethyl-8-chloroxanthine or 8-CTP) is a stimulant drug of the xanthine class that is closely related to caffeine in both its chemical structure and effects. It is mainly used as a wakefulness-promoting agent found within dimenhydrinate, where it counteracts the drowsiness effects present with diphenhydramine. 8-Chlorotheophylline can cause heart problems in people who take large doses of dimenhydrinate as both of the active ingredients in the drug, Diphenhydramine, and 8-Chlorotheophylline together can cause severe tachycardia.
Tolerance
Build-up
develops over days to weeks of regular use
Reset
3–7 days for acute tolerance; longer for full reset
Effects
Positive
- Stimulation
- Bronchodilation
- Physical euphoria
Negative
- Increased heart rate
- Increased blood pressure
- Nausea
- Increased perspiration
- Jitteriness
- Teeth grinding
- Frequent urination
Positive
- Alertness enhancement
- Wakefulness
- Focus enhancement
- Motivation enhancement
- Analysis enhancement
- Memory enhancement
Negative
- Anxiety
- Irritability
- Talkativeness
- Thought acceleration
Positive
- Increased libido
- Tactile enhancement
- Increased Music Appreciation
- Increased Libido
- Increased music appreciation
Negative
- Light sensitivity
- Appetite suppression
- Appetite Suppression
- Dehydration
- Disinhibition