Alcohol Facts
Depressant;
Dose and durationby route · individual sensitivity varies
Oral(g)
Threshold< 10 gLight10 – 20 gCommon20 – 30 gStrong30 – 40 gHeavy40+ g
Starts in 2 – 5 minLasts 1.5 – 5 hoursAfter-effects 6 – 48 hours
Body and dependence
- Acute toxicity
- Critical
- Chronic toxicity
- Critical
- Physical dependence
- High
- Psychological dependence
- High
- Withdrawal
- Life-threatening · fatal · medical supervision
- Compulsive redosing
- High
Tolerance
- Builds
- Moderate
- Fully resets after
- 10.5 days
- Carries over to
- Benzodiazepines;
Barbiturates; GHB; Other GABA-A positive allosteric modulators
Effectslikely at a common dose
- Perception
- Proprioceptive distortion;
Spatial disorientation; Vestibular distortion; +17 possible, including Visual acuity suppression, Double vision - Body
- Sedation;
Muscle relaxation; Motor control impairment; Dehydration sensation; Increased urination; Dizziness; +25 possible, including Nausea, Headache, Temperature dysregulation - Thinking
- Analysis suppression;
Information processing suppression; Memory suppression; Thought deceleration; Cognitive impairment; Focus suppression; Decision impairment; +16 possible, including Language suppression, Thought disorganization, Confusion - Feeling
- Anxiety suppression;
Emotional enhancement; +8 possible, including Emotional lability, Anxiety, Depression - Self
- Disinhibition;
+8 possible, including Ego inflation, Communication suppression, Craving - Time
- none likely · 2 possible, including Temporal disorientation
- Awareness
- none likely · 1 possible
Who shouldn't take it
Absolute
Concurrent opioid use; Concurrent benzodiazepine use; Concurrent GHB/GBL use; Hepatic cirrhosis / severe liver disease; Disulfiram therapy; Pregnancy (any amount); Operating vehicles or machinery
Relative
Seizure history / epilepsy; History of alcohol use disorder; Major depression, bipolar disorder, anxiety disorders; Hepatitis B or C co-infection; Concurrent acetaminophen in heavy drinkers; ALDH2*2 carriers (ALDH2 deficiency)
Combinations66 recorded
Lethal (9)
2-Fluorodeschloroketamine; Baclofen; Buprenorphine; GHB, GBL; Kratom; MAOIs; Methoxetamine; Opioids; Tramadol
Dangerous (34)
Anticholinergics; Antipsychotics; Atypical antipsychotics; Benzodiazepines; Buprenorphine, Kratom; Caffeine; Cannabis, THC; Clonidine, Guanfacine; Ephedrine, Pseudoephedrine; Gabapentin, Pregabalin; GHB, Baclofen; MDMA, Amphetamines; MDMA, MDA; Naltrexone; NDRIs (Wellbutrin); NSAIDs; Stimulants; THC; 5-HTP, Tryptophan; Alpha-2 adrenergic receptor antagonist; Antihistamines; Dopamine agonists; Ibogaine; Ketamine, DXM, PCP; and 10 more, see full page
Caution (18)
See full page: psychedex.org/substances/alcohol
Not graded (5)
Not listed never means safe.
Seek help immediately if
- Extreme drowsiness — can't stay awake or be roused
- Confusion, slurred speech, severe loss of coordination
- Slow, shallow, or irregular breathing
- Unconsciousness / unresponsive; limp, floppy body
- Blue lips or fingertips
- Vomiting while sedated (choking / aspiration risk)
- Cold, clammy skin; weak pulse
What to do
- Try to wake them — shout, firm sternal rub
- If unresponsive or breathing is impaired, call emergency services
- Place them in the recovery position — critical, they can choke on vomit
- Monitor breathing continuously; be ready to give rescue breaths / CPR
- Never leave them alone to "sleep it off"
- Do not give other drugs, stimulants, or more depressants
Most depressant overdoses resolve with airway protection, breathing support, and monitoring. The danger is respiratory depression and choking on vomit — sharply worse when combined with opioids or alcohol. GHB/GBL overdoses often involve sudden deep unconsciousness and may self-resolve, but airway protection is essential.
988 Suicide & Crisis LifelineFireside Project: 62-FIRESIDE
psychedex.org/substances/alcohol · Version r1 · Not medical adviceValues as of