Tranxene is still available in the United States, but only in a limited form. The brand-name version is restricted to a single strength (7.5 mg), and getting it filled can be more complicated than with other benzodiazepines. Generic clorazepate dipotassium, the active ingredient in Tranxene, is also on the market as a prescription medication.
What’s Available Now
The brand-name Tranxene T-TAB is currently produced by Recordati Rare Diseases in just one strength: 7.5 mg scored tablets. Two other strengths, 3.75 mg and 15 mg, were discontinued. If you had a prescription for one of those doses, your doctor would need to adjust your regimen using the remaining 7.5 mg tablets or switch you to an alternative.
There’s an important catch with the brand-name version. Recordati distributes Tranxene through drop ship only to retail pharmacies, meaning your pharmacy has to order it directly from the manufacturer rather than picking it up through a standard wholesale distributor. This can create delays. Some pharmacies may not want to go through the process, so you might need to call around or ask your pharmacy to place a special order.
Generic clorazepate dipotassium tablets are also marketed as prescription medications. A generic version received marketing authorization in September 2022. However, availability at your local pharmacy can vary. Clorazepate is not as widely prescribed as other benzodiazepines, so many pharmacies don’t keep it in regular stock. Again, ordering may be required.
Why It’s Hard to Find
Clorazepate occupies a niche spot in the benzodiazepine market. It was never as commonly prescribed as diazepam (Valium) or lorazepam (Ativan), and demand has stayed relatively low. Low demand means fewer manufacturers, smaller production runs, and less incentive for pharmacies to stock it on their shelves. The result is a medication that’s technically still approved and available but practically difficult to get your hands on without some effort.
Clorazepate is not currently listed on the FDA’s official drug shortage list, so supply problems are more about distribution patterns than actual manufacturing shortages.
What Tranxene Is Prescribed For
Clorazepate is FDA-approved for three uses: anxiety disorders, symptoms of acute alcohol withdrawal, and as an add-on treatment for certain types of seizures. It’s a long-acting benzodiazepine with a half-life of roughly 100 hours, meaning a single dose stays active in your body for days. That long duration makes it useful for conditions where steady, sustained effects are needed, like tapering off alcohol or controlling breakthrough seizures.
For context, clorazepate’s duration is similar to diazepam and chlordiazepoxide (Librium), both of which also have half-lives around 100 hours. It’s a very different profile from shorter-acting options like lorazepam (15 hours) or alprazolam (12 hours), which wear off much faster.
How It Compares to Other Benzodiazepines
In terms of potency, 7.5 to 15 mg of clorazepate is roughly equivalent to 5 to 10 mg of diazepam. It reaches peak levels in your blood quickly, within 30 minutes to 2 hours after taking it. Once absorbed, clorazepate is actually converted in the body into the same active compound that diazepam produces, which is why the two drugs share a similar duration and effect profile.
If your pharmacy can’t fill a clorazepate prescription and your doctor needs to switch you to something else, diazepam and chlordiazepoxide are the closest alternatives in terms of how they work in the body. Your doctor can use equivalency dosing to find the right amount. Switching between benzodiazepines with similar half-lives tends to be smoother than switching between a long-acting and short-acting one.
Prescription and Legal Classification
Clorazepate is a Schedule IV controlled substance under federal law, the same classification as most other benzodiazepines. This means refills are allowed but limited. You can receive up to five refills within six months of the original prescription date, after which you’d need a new prescription from your doctor. Some states have additional restrictions on controlled substance prescriptions, so rules can vary depending on where you live.
Because of its controlled status and low demand, some pharmacies may be hesitant to order it. If you’re having trouble, ask your prescribing doctor’s office for help locating a pharmacy that can fill it, or check with a larger chain pharmacy that has more flexible ordering capabilities.