8-Chlorotheophylline

Q: What is 8-Chlorotheophylline?

Chemical compound 8-Chlorotheophylline, also known as 1,3-dimethyl-8-chloroxanthine, is a stimulant drug of the xanthine chemical class, with physiological effects similar to caffeine. Its main use is in combination (salt) with diphenhydramine in the antiemetic dimenhydrinate (Dramamine). Diphenhydr

8-Chlorotheophylline, also known as 1,3-dimethyl-8-chloroxanthine, is a stimulant drug of the xanthine chemical class, with physiological effects similar to caffeine. Its main use is in combination (salt) with diphenhydramine in the antiemetic dimenhydrinate (Dramamine). Diphenhydramine reduces nausea but causes drowsiness, and the stimulant properties of 8-Chlorotheophylline help reduce that side effect.

Despite being classified as a xanthine stimulant, 8-chlorotheophylline generally does not produce any hyperlocomotion above control in mice and does not appear to cross the blood-brain barrier well.

The 8-chloro modification is not selected for pharmacological properties; instead, it was to raise the acidity of the xanthine amine group enough to form a co-salt with diphenhydramine.

The drug is also sold in combination with promethazine as a salt.

Harm Reduction

General Principles Start low, go slow: Always begin with a low dose, especially with unfamiliar batches or new substances. Individual sensitivity varies enormously. Test your substances: Use reagent t...

How It Feels

8-Chlorotheophylline announces itself with the quiet, unassuming character of a compound that barely qualifies as psychoactive. Within thirty to sixty minutes of oral ingestion, there is a mild brightening of attention, as though the mind has been gently nudged from a state of rest toward one of activity. Fatigue recedes incrementally. The eyes focus with slightly less effort. There is a suggestion of increased alertness that is real but modest, hovering at the boundary between a pharmacological effect and the ordinary fluctuation of wakefulness that occurs throughout any given day.

At its subtle peak, the experience is dominated by a gentle, xanthine-class stimulation. It is less potent than caffeine and considerably less interesting. There is no euphoria, no increased sociability, no enhanced sensory perception. Instead, there is simply a mild reduction in drowsiness and a slight improvement in the ability to sustain attention. The mind does not race or sharpen; it merely becomes marginally less likely to drift. Coffee drinkers will find the effect familiar but diminished, like hearing a favorite song played at half volume through a wall.

Physically, the effects are barely detectable. Heart rate may increase by a few beats per minute. There may be a very slight bronchodilation, an easing of breathing so subtle that it would only be noticed by someone already experiencing mild respiratory congestion. Appetite is unaffected. There is no jaw tension, no sweating, no vasoconstriction. The body proceeds through its day largely unaware that anything unusual has been consumed.

The effects taper over three to five hours, dissolving back into baseline without ceremony. There is no comedown, no rebound fatigue, no sleep disruption. The substance's primary significance lies not in its own psychoactive effects, which are negligible, but in its role as a component of other formulations, most notably dimenhydrinate, where it serves as a mild stimulant counterbalance to the sedation of diphenhydramine. On its own, 8-chlorotheophylline is a footnote in pharmacology, a compound that illustrates through its very mildness how narrow the gap can be between psychoactively active and pharmacologically inert.

Subjective Effects

The effects listed below are based on the Subjective Effect Index (SEI), an open research literature based on anecdotal reports and personal analyses. They should be viewed with a healthy degree of skepticism. These effects will not necessarily occur in a predictable or reliable manner, although higher doses are more liable to induce the full spectrum of effects.

Physical Effects

Physical(10)

Appetite suppression— A distinct decrease in hunger and desire to eat, ranging from reduced interest in food to complete d...
Dry mouth— A persistent, uncomfortable reduction in saliva production causing the mouth and throat to feel parc...
Frequent urination— Increased urinary frequency beyond normal patterns, caused by diuretic effects or bladder irritation...
Increased heart rate— A noticeable acceleration of heartbeat that can range from a subtle awareness of one's pulse to a fo...
Muscle tension— Persistent partial contractions or tightening of muscles that produces uncomfortable stiffness, cram...
Pupil dilation— A visible enlargement of the pupil diameter (mydriasis) that can range from subtle widening to drama...
Sedation— A state of deep physical and mental calming that manifests as a progressive desire to remain still, ...
Stimulation— A state of heightened physical and mental energy characterized by increased wakefulness, elevated mo...
Teeth grinding— An involuntary clenching and rhythmic grinding of the jaw muscles, known clinically as bruxism, that...
Vasoconstriction— A narrowing of blood vessels throughout the body that produces sensations of cold extremities, tingl...

Cognitive & Perceptual Effects

Cognitive(7)

Anxiety— Intense feelings of apprehension, worry, and dread that can range from a subtle background unease to...
Compulsive redosing— An overwhelming, difficult-to-resist urge to continuously take more of a substance in order to maint...
Depression— A persistent state of low mood, emotional numbness, hopelessness, and diminished interest or pleasur...
Empathy enhancement— A state of intensified compassion and emotional openness in which one feels deeply connected to othe...
Paranoia— Irrational suspicion and belief that others are watching, plotting against, or intending harm toward...

Interactions

Substance	Status	Note
Atropa belladonna	Dangerous	Extreme cardiovascular strain from anticholinergic and stimulant effects combined
Datura	Dangerous	Extreme cardiovascular strain from anticholinergic and stimulant effects combined
Diphenhydramine	Dangerous	Extreme cardiovascular strain from anticholinergic and stimulant effects combined
Harmala alkaloid	Dangerous	Risk of hypertensive crisis and serotonin syndrome; potentially fatal combination
MAOI	Dangerous	Risk of hypertensive crisis and serotonin syndrome; potentially fatal combination
Myristicin	Dangerous	Extreme cardiovascular strain from anticholinergic and stimulant effects combined
Peganum harmala	Dangerous	Risk of hypertensive crisis and serotonin syndrome; potentially fatal combination
1,3-Butanediol	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
1,4-Butanediol	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
1B-LSD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
1cP-AL-LAD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
1cP-LSD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
1cP-MiPLA	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
1P-ETH-LAD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
1P-LSD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
1V-LSD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2-Aminoindane	Caution	Increased cardiovascular strain and neurotoxicity risk
2-FA	Caution	Increased cardiovascular strain and neurotoxicity risk
2-FEA	Caution	Increased cardiovascular strain and neurotoxicity risk
2-FMA	Caution	Increased cardiovascular strain and neurotoxicity risk
2,5-DMA	Caution	Increased cardiovascular strain and neurotoxicity risk
25B-NBOH	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
25B-NBOMe	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
25C-NBOH	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
25C-NBOMe	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
25D-NBOMe	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
25E-NBOH	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
25I-NBOH	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
25I-NBOMe	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
25N-NBOMe	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-B	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-B-FLY	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-C	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-D	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-E	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-H	Caution	Increased cardiovascular strain and neurotoxicity risk
2C-I	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-P	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-T	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-T-2	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-T-21	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2C-T-7	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
2M2B	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
3-FA	Caution	Increased cardiovascular strain and neurotoxicity risk
3-FEA	Caution	Increased cardiovascular strain and neurotoxicity risk
3-FMA	Caution	Increased cardiovascular strain and neurotoxicity risk
3-FPM	Caution	Increased cardiovascular strain and neurotoxicity risk
3-MMC	Caution	Increased cardiovascular strain and neurotoxicity risk
3,4-CTMP	Caution	Increased cardiovascular strain and neurotoxicity risk
3C-E	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
3C-P	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-AcO-DET	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-AcO-DiPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-AcO-DMT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-AcO-MET	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-AcO-MiPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-FA	Caution	Increased cardiovascular strain and neurotoxicity risk
4-FMA	Caution	Increased cardiovascular strain and neurotoxicity risk
4-HO-DET	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-HO-DiPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-HO-DPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-HO-EPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-HO-MET	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-HO-MiPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-HO-MPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
4-MMC	Caution	Increased cardiovascular strain and neurotoxicity risk
4F-EPH	Caution	Increased cardiovascular strain and neurotoxicity risk
4F-MPH	Caution	Increased cardiovascular strain and neurotoxicity risk
5-APB	Caution	Increased cardiovascular strain and neurotoxicity risk
5-MeO-DALT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
5-MeO-DiBF	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
5-MeO-DiPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
5-MeO-DMT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
5-MeO-MiPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
6-APB	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
6-APDB	Caution	Increased cardiovascular strain and neurotoxicity risk
A-PHP	Caution	Increased cardiovascular strain and neurotoxicity risk
A-PVP	Caution	Increased cardiovascular strain and neurotoxicity risk
Acetylfentanyl	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Adrafinil	Caution	Increased cardiovascular strain and neurotoxicity risk
AL-LAD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Alcohol	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
ALD-52	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Allylescaline	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Alprazolam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Amphetamine	Caution	Increased cardiovascular strain and neurotoxicity risk
Armodafinil	Caution	Increased cardiovascular strain and neurotoxicity risk
Ayahuasca	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Baclofen	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Benzodiazepines	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Benzydamine	Caution	Increased cardiovascular strain and neurotoxicity risk
Bromantane	Caution	Increased cardiovascular strain and neurotoxicity risk
Bromo-DragonFLY	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Bufotenin	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Buprenorphine	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Butylone	Caution	Increased cardiovascular strain and neurotoxicity risk
Caffeine	Caution	Increased cardiovascular strain and neurotoxicity risk
Cake	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Carisoprodol	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Clonazepam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Clonazolam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Clonidine	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Cocaine	Caution	Increased cardiovascular strain and neurotoxicity risk
Codeine	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Cyclazodone	Caution	Increased cardiovascular strain and neurotoxicity risk
Deschloroetizolam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Desomorphine	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Desoxypipradrol	Caution	Increased cardiovascular strain and neurotoxicity risk
DET	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Dextroamphetamine	Caution	Increased cardiovascular strain and neurotoxicity risk
Dextropropoxyphene	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Diazepam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Dichloropane	Caution	Increased cardiovascular strain and neurotoxicity risk
Diclazepam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Dihydrocodeine	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
DiPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
DMT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
DOB	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
DOC	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
DOI	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
DOM	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
DPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Efavirenz	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Ephedrine	Caution	Increased cardiovascular strain and neurotoxicity risk
Ephylone	Caution	Increased cardiovascular strain and neurotoxicity risk
EPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Escaline	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Eszopiclone	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
ETH-CAT	Caution	Increased cardiovascular strain and neurotoxicity risk
ETH-LAD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Ethylmorphine	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Ethylone	Caution	Increased cardiovascular strain and neurotoxicity risk
Ethylphenidate	Caution	Increased cardiovascular strain and neurotoxicity risk
Etizolam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
F-Phenibut	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Fenethylline	Caution	Increased cardiovascular strain and neurotoxicity risk
Fentanyl	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Flualprazolam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Flubromazepam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Flubromazolam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Flunitrazepam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Flunitrazolam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Gabapentin	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Gaboxadol	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
GBL	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
GHB	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Grayanotoxin	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Heroin	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Hexedrone	Caution	Increased cardiovascular strain and neurotoxicity risk
Hydrocodone	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Hydromorphone	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Ibogaine	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Isopropylphenidate	Caution	Increased cardiovascular strain and neurotoxicity risk
Kratom	Caution	Increased cardiovascular strain and neurotoxicity risk
LAE-32	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Lisdexamfetamine	Caution	Increased cardiovascular strain and neurotoxicity risk
Lorazepam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
LSA	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
LSD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
LSM-775	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
LSZ	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
MCPP	Caution	Increased cardiovascular strain and neurotoxicity risk
MDA	Caution	Increased cardiovascular strain and neurotoxicity risk
MDMA	Caution	Increased cardiovascular strain and neurotoxicity risk
MDPV	Caution	Increased cardiovascular strain and neurotoxicity risk
Mephedrone	Caution	Increased cardiovascular strain and neurotoxicity risk
Mephenaqualone	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Mescaline	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
MET	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Methadone	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Methallylescaline	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Methamphetamine	Caution	Increased cardiovascular strain and neurotoxicity risk
Methaqualone	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Methcathinone	Caution	Increased cardiovascular strain and neurotoxicity risk
Methiopropamine	Caution	Increased cardiovascular strain and neurotoxicity risk
Methylnaphthidate	Caution	Increased cardiovascular strain and neurotoxicity risk
Methylone	Caution	Increased cardiovascular strain and neurotoxicity risk
Methylphenidate	Caution	Increased cardiovascular strain and neurotoxicity risk
Metizolam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Mexedrone	Caution	Increased cardiovascular strain and neurotoxicity risk
Midazolam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
MiPLA	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
MiPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Mirtazapine	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Modafinil	Caution	Increased cardiovascular strain and neurotoxicity risk
Morphine	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
MPT	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
N-Ethylhexedrone	Caution	Increased cardiovascular strain and neurotoxicity risk
N-Methylbisfluoromodafinil	Caution	Increased cardiovascular strain and neurotoxicity risk
Naloxone	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
NEP	Caution	Increased cardiovascular strain and neurotoxicity risk
Nicotine	Caution	Increased cardiovascular strain and neurotoxicity risk
Nifoxipam	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
NM-2-AI	Caution	Increased cardiovascular strain and neurotoxicity risk
O-Desmethyltramadol	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Oxiracetam	Caution	Increased cardiovascular strain and neurotoxicity risk
Oxycodone	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Oxymorphone	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
PARGY-LAD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Pentedrone	Caution	Increased cardiovascular strain and neurotoxicity risk
Pentobarbital	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Pethidine	Caution	Stimulants mask opioid sedation, increasing overdose risk when the stimulant wears off
Phenobarbital	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other
Phenylpiracetam	Caution	Increased cardiovascular strain and neurotoxicity risk
PRO-LAD	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Psilocybin Mushrooms	Caution	Increases anxiety, cardiovascular stress, and psychological intensity
Rhodiola Rosea	Caution	Increased cardiovascular strain and neurotoxicity risk
SAMe	Caution	Masks the effects of each drug; risk of overdosing when one wears off before the other

Toxicity & Safety

8-Chlorotheophylline carries significant toxicity risks, particularly with chronic use or high doses. Stimulant toxicity primarily affects the cardiovascular and nervous systems.

Cardiovascular toxicity: Stimulants increase heart rate, blood pressure, and cardiac workload. This can precipitate arrhythmias, myocardial infarction, aortic dissection, or stroke, particularly in individuals with pre-existing cardiovascular conditions or at very high doses.

Neurotoxicity: Chronic stimulant use can damage dopaminergic and serotonergic neurons. The extent of neurotoxicity depends on the specific compound, dose, frequency, and route of administration. Some stimulant-induced neurotoxic changes may be partially reversible with prolonged abstinence.

Psychiatric effects: High-dose or chronic stimulant use is associated with stimulant psychosis (paranoia, hallucinations), anxiety disorders, and depression during withdrawal. Sleep deprivation from stimulant use compounds these psychiatric risks.

Dependence potential: 8-Chlorotheophylline carries meaningful addiction potential due to dopaminergic reward pathway activation. Tolerance develops to euphoric effects, often leading to dose escalation. Withdrawal primarily involves fatigue, depression, anhedonia, and hypersomnia.

Other risks: Bruxism and dental damage, weight loss and malnutrition from appetite suppression, hyperthermia (especially with physical activity), and route-specific damage (nasal septum from insufflation, injection site infections).

It is strongly recommended that one use harm reduction practices when using this substance.

Overdose Information

Stimulant overdose from 8-Chlorotheophylline is a medical emergency primarily involving cardiovascular and neurological toxicity.

Signs of overdose: Extremely rapid or irregular heartbeat, chest pain, severe headache, dangerously elevated body temperature, seizures, agitation progressing to psychosis, confusion, and loss of consciousness.

Emergency response:

Call emergency services immediately
Keep the person cool (remove excess clothing, apply cool water)
If seizures occur, protect the head and clear the area of hard objects
If the person loses consciousness, place in recovery position
Do not give the person more stimulants, caffeine, or depressants unless directed by medical professionals

Prevention: Pre-measure doses. Avoid redosing. Stay hydrated (but don't overhydrate). Take breaks from physical activity. Monitor heart rate if possible. Have someone present who can recognize warning signs.

Full	Unknown
Half	Unknown
Zero	Unknown

Dosage

Duration

How It Feels

Subjective Effects

Physical Effects

Physical(10)

Cognitive & Perceptual Effects

Cognitive(7)

Pharmacology

Detection Methods

Standard Drug Panel Inclusion

Urine Detection

Blood and Saliva Detection

Hair Follicle Detection

Confirmatory Testing

Reagent Testing

Interactions

History

Harm Reduction

General Principles

8-Chlorotheophylline-Specific Harm Reduction

Toxicity & Safety

Overdose Information

Dangerous Interactions

Tolerance

Legal Status

Experience Reports (2)

Tips (3)

See Also

References (5)

Frequently Asked Questions