Marijuana is made from dried leaves and flowers, and hashish is made from the plant’s hardened resin. Cannabinoids are a group of over 113 chemical substances found in cannabis. Chemical substances derived from cannabis include delta-9-tetrahydrocannabinol (THC) that is responsible for psychoactive effects, and cannabidiol (CBD) which on the other hand, do not produce any high.


| Preparation of Alcohol | Concentration of alcohol by volume (%ABV) | Absolute Alcohol (gms/100ml) | Standard Drink (ml) |
| Beer (standard) | 3-4 | 2.3-3.1 | 300-400 ml |
| Beer (strong) | 8-11 | 6.2-8.6 | 100-150 ml |
| Wines | 5-13 | 3.9-10.1 | 100-250 ml |
| Fortified Wines | 14-20 | 10.9-15.9 | 60-90 ml |
| Spirits (whiskey, Rum, Gin, Vodka, Brandy, etc.) | 4 | 3-1.2 | 30 ml |
| Arrack | 3 | 2-5.7 | 40 ml |
Psychoactive substance use can be classified into two categories based on the amount consumed and the consequences:
| Psychological Effect | Physical Effects |
| Drowsiness | Flushed faces |
| Impaired attention | Rapid pulse |
| Impaired memory | Headache |
| Mood lability (rapid changes) | Stomach ache |
| Impulsive behavior | Diarrhoea |
| Aggressive behavior | Slurred speech |
| Impaired judgment | Motor in coordination |
| Inappropriate social conduct | Nystagmus |
| Impaired occupational performance | Unsteady gait |
| Stupor/Coma | Respiratory depression |
Alcohol’s effects start roughly 15 minutes after consumption and linger for several hours. Alcohol is a central nervous system depressant (CNS). It calms and relaxes people in modest doses. Surprisingly, it can also create the impression of power and lead to noisy behaviour.
These ‘drunkenness’ effects are mistakenly thought to be distinct from the impact of other CNS-depressing sedatives. The euphoria that might accompany drinking is a symptom of CNS depression, not stimulation. Alcohol is usually consumed as a social drug rather than as a hypnotic.
The behavioral manifestations of alcohol-induced CNS depression differ depending on the person and the situation.
| BAC mg/dl | Effects |
| < 80 | Euphoria, feeling of relaxation, and talking freely clumsy movements of hands and legs reduced alertness but believe himself to be alert |
| >80 | Noisy moody impaired judgement impaired driving ability |
| 100-200 | Electroencephalographic changes to begin to appear. Blurred vision unsteady gait gross motor in-coordination slurred speech aggressive, quarrelsome talking loud |
| 200-300 | Amnesia for the experience blackout |
| 300-350 | Coma |
| 355-600 | May cause or contribute to death |