What are Barbiturates?
Barbiturates are a class of drugs that were used extensively in the 1960s and 1970s as a treatment for anxiety, insomnia, and seizure disorders. Apart from a few specific indications, they are not commonly prescribed these days, having been largely superseded by benzodiazepines, which are much safer, although still potentially addictive.
Barbiturates are known as central nervous system depressants. They enhance the action of GABA, a neurotransmitter that inhibits the activity of nerve cells in the brain.
What are Barbiturates used for?
Historically, barbiturates were used in the treatment of anxiety, epilepsy, to induce sleep, and as anesthetics. Nowadays, their use is limited to a few specific conditions, such as:
extreme cases of insomnia
seizures that are unresponsive to other, less toxic, agents
the induction of anesthesia
in combination with acetaminophen and caffeine to relieve tension headaches.
Research indicates that the abuse of barbiturates is on the rise, especially among adolescents. They are often used to counteract the stimulant effects from drugs such as cocaine and methamphetamine. This has earned them the nickname “downers”.
The “high” from barbiturate abuse is similar to alcohol intoxication. In small doses, the user feels drowsy, disinhibited and intoxicated. In higher dosages, the user develops confusion, slurred speech, and staggers like they are drunk. Too high a dose can lead to unconsciousness, breathing difficulties, and sometimes death. In the 1970s many people died after taking barbiturates, and this, together with the fact that they are extremely addictive, are the reasons they are hardly ever prescribed today.
What are the differences between barbiturates?
The main difference between barbiturates is how long they act for. Long-acting barbiturates such as phenobarbital can last for well over 24 hours, which makes them useful in combination with other agents to prevent seizures in epilepsy. Thiopental is relatively short-acting and is used to induce anesthesia before general anesthetics are given.
Injectable forms of barbiturates are classified as class A drugs, and oral and rectal forms as class B drugs. This means that any form of possession or supply apart from legitimately with a prescription is a punishable offense.