Alprazolam Pharmacology
Real Life Pharmacology - Pharmacology Education for Health Care Professionals
Eric Christianson, PharmD; Pharmacology Expert and Clinical Pharmacist
4.9 • 773 Ratings
🗓️ 8 January 2026
⏱️ 15 minutes
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Summary
Alprazolam is a short-acting benzodiazepine that enhances the inhibitory effects of gamma-aminobutyric acid (GABA) at the GABA-A receptor. Clinically, this results in anxiolytic, sedative, muscle-relaxant, and anticonvulsant effects.
After oral administration, alprazolam is rapidly absorbed, with onset of action typically within 30–60 minutes. It undergoes extensive hepatic metabolism primarily via CYP3A4 to inactive metabolites, and has an elimination half-life of approximately 11 hours, which may be prolonged in elderly patients or those with hepatic impairment.
Common adverse effects include sedation, dizziness, impaired coordination, and cognitive slowing. More serious risks include respiratory depression, especially when combined with opioids, alcohol, or other CNS depressants.
Clinically, alprazolam should be used at the lowest effective dose for the shortest possible duration. Abrupt discontinuation should be avoided; gradual tapering is essential to reduce withdrawal risk. It is a controlled substance that carries the risk of addiction and dependence.
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Transcript
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| 0:00.0 | Hey, all, welcome back to the Real Life Pharmacology podcast. |
| 0:03.6 | I'm your host, pharmacist, Sarah Christensen. |
| 0:05.4 | Thank you so much for listening today. |
| 0:08.0 | On this episode, I'm going to cover El Praisalam brand name Xanax. |
| 0:13.5 | Before I get into that, I got to remind you, go check out real life pharmacology.com. |
| 0:19.7 | I've got a free 31 page PDF, simple an email. We'll get |
| 0:23.6 | you access to that. Great refresher. If you're out in practice, great review material if you're |
| 0:30.4 | taking pharmacology and board exams coming up to. So go check that out. Free 31 page PDF at |
| 0:36.7 | real life pharmacology.com. |
| 0:40.0 | All right. Drug of the day today is El Praisalam. Brand name is Xanax. |
| 0:46.3 | El Praisalam is a benzodiazepine, as you can kind of tell by the ending of the medication there. |
| 0:58.9 | It's a short-acting one. I would say I see it most commonly used for anxiety, potentially panic disorder as well. It's got a fairly rapid onset, |
| 1:07.9 | so using it on an as needed basis for anxiety does make some sense there. |
| 1:15.2 | It's definitely effective in the short term, but being a benzodiazepine, we can certainly |
| 1:21.1 | carry some risk for dependence, withdrawal, and we do have some drug interactions with |
| 1:27.2 | this as well, which I'll get |
| 1:28.2 | into coming up here. |
| 1:31.1 | Mechanistically, how do benzodiazepines work and how does El Prasalam work? |
| 1:37.5 | It enhances the effect of gamma amino-butyric acid, which is more commonly referred to as GABA. |
| 1:48.8 | And specifically, it targets more so the GABA A receptor. |
| 1:55.2 | This leads to an increase in the frequency of chloride channel opening, |
| 2:01.5 | leading to neurons being hyper-polarized, |
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