Central Nervous Systems (CNS) depressants are a class of drug that encompasses alcohol, barbiturates, and a wide variety of other medicines that affect gamma-aminobutyric acid (GABA) receptors in the brain. After taking depressants, a person will likely feel tired, sleepy, or display decreased inhibitions. Depressants have their positive uses, as they are crucial in treating insomnia, stress, anxiety, pain, and panic attacks.
Yet like every medicine, it is essential to note that they can be abused easily. The relaxation effect that comes with taking depressants can also bring euphoria, making these drugs dangerously addictive.
Classes of CNS Depressant Drugs
There are many subclasses of CNS depressants, each with its own function and side effects. However, taking them over a long time can lead a person to become dependent on the substance, eventually leading to full-blown addiction. Doctors are careful when prescribing these drugs, and many only use them over short periods to deal with a particular ailment.
Unfortunately, because CNS depressants are so easy to make, tons of illicit depressants are on the market, being sold cheaply to unsuspecting buyers. Some of these are made in illegal labs with no quality control, potentially leading to dangerous side effects if taken unsupervised. Before we can appreciate the impact of depressants on a person, we must first examine what they are in detail.
What Are Depressant Drugs?
While most people think depressants may have something to do with depression, the truth is that they don’t. CNS depressants cause the central nervous system (the brain and the spine) to slow down. When a person takes them, their body’s detection system (the CNS) starts to process things a lot slower because of how the drug interacts with a particular neurotransmitter.
Depressants were initially designed as a way to treat certain conditions. On the street, many individuals who use the drug refer to them as “downers” because they bring a person’s ability to feel anything down.
Typically, CNS depressant drugs are divided into three categories: hypnotics, tranquilizers, and sedatives. By attaching to a particular neurotransmitter (GABA in this case), they slow brain activity significantly. Among the most common CNS depressants a person may encounter are:
- Alcohol: Ethyl Alcohol (the kind found in alcoholic drinks) can have a powerful CNS depressant effect.
- Tranquilizers: The two most common classes are benzodiazepines and barbiturates.
- Nonbenzodiazepine Sedatives: These are sedatives that don’t fall into the tranquilizer class of benzodiazepines.
- Opioids: Opioids (and opiates, by extension) are drugs that come from or are artificially based on the extract of the opium plant.
As we can see here, depressant drugs deal with slowing down the central nervous system. They create a type of depression that increases the amount of time it takes for signals to cross pathways within the brain and the spine.