Barbiturate
BAR
What are Barbiturates?
Barbiturates are central nervous system depressants that reduce brain activity and produce calming or sedating effects. Once widely prescribed for anxiety and insomnia, their medical use is now limited due to the significant risks associated with dependence, tolerance, and overdose. Physicians today primarily use certain barbiturates for specific clinical needs such as seizure control, anesthesia induction, and treatment-resistant migraines.
Prescription barbiturates come in regulated tablet, capsule, and liquid forms, each designed for precise medical dosing. Illicit or recreational forms—typically counterfeit pills or misused prescription products—are swallowed or sometimes crushed and snorted to achieve sedation or euphoria. However, the margin between a “desired” effect and life-threatening respiratory depression is extremely small, making recreational misuse particularly dangerous. Their high abuse potential has led to strict scheduling and close monitoring in both healthcare and drug-testing environments.
Effects:
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Sedation and drowsiness
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Relaxation and reduced anxiety
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Impaired coordination and slowed reflexes
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Blurred speech and cognitive slowing
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Reduced heart rate and blood pressure
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Respiratory depression (dose-dependent)
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Memory impairment or confusion
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Increased risk of dependence and withdrawal symptoms
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Mood instability or irritability
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High overdose potential, especially when combined with alcohol or opioids
Commons Slang Terms:
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Barbs
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Downers
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Reds (typically secobarbital)
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Blues
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Goofballs
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Yellows
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Toonies
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Yellow jackets
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Sleepers
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Rainbows
Legal Status:
Barbiturates are classified as Schedule II–IV controlled substances in the U.S., depending on the specific drug and its medical use. All barbiturates carry a high potential for dependence and overdose, which is why their prescribing is tightly restricted and closely monitored. This controlled status makes barbiturates an important target for toxicology screening, particularly in environments concerned with impairment, medication misuse, or compliance monitoring.
For point-of-care rapid testing programs—including workplace testing, probation/supervision programs, treatment facilities, and healthcare settings—barbiturates are typically included as a standard drug class on multi-panel rapid screens. Their sedating and impairment-causing effects pose significant safety risks, especially in positions involving driving, machinery, or public safety. Because some barbiturates still have legitimate medical uses, any presumptive positive result must be followed by confirmatory laboratory testing and, when appropriate, verification of a valid prescription. This ensures regulatory compliance, accuracy, and fairness in decision-making across all testing environments.
Screening Options:
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