After being taken into the body by oral ingestion, smoking, injection, or snorting, the psychoactive chemicals in drugs move through the bloodstream and pass through the blood-brain barrier.
What are the 4 ways that medicines can be delivered into your system?
Current research on drug delivery systems can be described in four broad categories: routes of delivery, delivery vehicles, cargo, and targeting strategies. Medications can be taken in a variety of ways—by swallowing, by inhalation, by absorption through the skin, or by intravenous injection.
What are the 4 identifying categories of psychoactive drugs?
Groups of psychoactive drugs include stimulants, depressants, narcotics (opioids), hallucinogens, and marijuana (cannabis).
What is the most legal drug?
The 8 Most Addictive Legal Drugs
- Alcohol. Alcohol isn’t as addictive as illegal drugs like heroin or crystal meth, but it’s still highly dangerous. …
- Nicotine. One of the most accessible legal drugs, nicotine is also the most addictive. …
- Opioids. …
- Benzodiazepines. …
- ADHD Meds. …
- Ambien. …
- Prescription Cough Syrup. …
- Anabolic steroids.
What is the most commonly used depressant?
In fact, the most widely used depressant in the world is alcohol. Although alcohol is legal, it’s not a harmless substance. Like other depressants, alcohol depresses the central nervous system.
Is coffee a psychoactive drug?
Caffeine is the most widely used psychoactive substance in the world. In Western society, at least 80 per cent of the adult population consumes caffeine in amounts large enough to have an effect on the brain.
How are drugs categorized?
Drugs can be categorized based upon their effects on users. There are essentially seven different drug types, each with its own set of characteristics, effects and dangers. Categories include stimulants, depressants, hallucinogens, dissociatives, opioids, inhalants and cannabis.
How do drugs leave the body?
While drugs and their metabolites are mostly excreted by the kidneys into urine, drugs can also leave the body in other methods, such as breath and sweat, hence the noticeable smell of alcohol on someone who has been drinking very heavily.
What is the most common method of taking a drug?
The most common methods of drug administration include: