Phenobarbital
Brand names: Phenobarbital
At a glance
- Medicare prescriptions, 2024
- 259,406
- Medicare drug cost
- $6.9M
- Average cost per prescription
- $26.76
- Clinicians who prescribed it
- 11,270
Where it is prescribed
List the prescribers in any state, county, city or ZIP code →
What it is used for
Sedative Anticonvulsant – For the treatment of generalized and partial seizures.
From the FDA-approved prescribing information (label dated July 2026). Full labels on DailyMed (opens in a new tab)
Who prescribes it
- Neurology 35.4%
- Nurse Practitioners 19.7%
- Family Medicine 18.4%
- Internal Medicine 14.4%
- Physician Assistants 4.8%
- General Practice 1.8%
- Geriatric Medicine 1.2%
- Child Neurology 0.6%
- Psychiatry 0.4%
- Pediatrics 0.3%
- Pulmonology 0.3%
- Sleep Medicine 0.3%
All prescribers, by place, name or specialty →
Share of Medicare prescriptions written by each specialty. Select one to list its prescribers.
Trend, 2019–2024
Medicare prescriptions fell 28% from 2019 to 2024.
Biggest change by state since 2019
- Iowa −20%
- Indiana −20%
- Florida −23%
- New York −23%
- Puerto Rico −23%
- Mississippi (smallest change) −37%
- Tennessee (smallest change) −37%
From CMS’s yearly state and national Part D summaries, which count every prescriber, including those CMS leaves out of its per-clinician data (fewer than 11 prescriptions). That is why these totals are higher than the count at the top of this page. Prescriptions include refills.
What it looks like
Pills from 3 makers on file. The same medicine can look different depending on who made it, so check the imprint (the letters and numbers on the pill) with your pharmacist if a refill looks different.
Chartwell Rx, LLC
| Strength | Looks like | Imprint |
|---|---|---|
| 15 mg | white round tablet, 6 mm, scored to split in 2 | CE 275 |
| 16.2 mg | white round tablet, 6 mm, scored to split in 2 | CE 279 |
| 30 mg | white round tablet, 8 mm, scored to split in 2 | CE 276 |
| 32.4 mg | white round tablet, 8 mm, scored to split in 2 | CE 280 |
| 60 mg | white round tablet, 10 mm, scored to split in 2 | CE 277 |
| 64.8 mg | white round tablet, 10 mm, scored to split in 2 | CE 281 |
| 97.2 mg | white round tablet, 12 mm, scored to split in 2 | CE 282 |
| 100 mg | white round tablet, 12 mm, scored to split in 2 | CE 278 |
Remedyrepack Inc.
| Strength | Looks like | Imprint |
|---|---|---|
| 32.4 mg | white round tablet, 6 mm, scored to split in 2 | 626 ECI |
Sun Pharmaceutical Industries, Inc.
| Strength | Looks like | Imprint |
|---|---|---|
| 15 mg | white round tablet, 6 mm, scored to split in 2 | L H 1 |
| 16.2 mg | white round tablet, 6 mm, scored to split in 2 | L H 2 |
| 30 mg | white round tablet, 7 mm, scored to split in 2 | L H 7 |
| 32.4 mg | white round tablet, 7 mm, scored to split in 2 | L H 5 |
| 60 mg | white round tablet, 9 mm, scored to split in 2 | L H 17 |
| 64.8 mg | white round tablet, 9 mm, scored to split in 2 | L H 25 |
| 97.2 mg | white round tablet, 10 mm, scored to split in 2 | L H 52 |
| 100 mg | white round tablet, 10 mm, scored to split in 2 | L H 71 |
Source: DailyMed (U.S. National Library of Medicine), from each maker’s FDA drug listing. A few makers are shown, not every one. Never take a pill you can’t identify; ask a pharmacist.
Industry payments about this drug
No industry payments to clinicians named this drug in 2025.
Recalls and shortages
Not on the FDA drug shortage list.
No FDA-reported recalls since 2020.
Sources: CMS Medicare Part D Prescribers by Provider and Drug (2024; prescriptions include refills, and CMS hides counts under 11 per prescriber); U.S. Food and Drug Administration, openFDA (drug labels, NDC directory, enforcement reports, drug shortages); CMS Open Payments 2025; ClinicalTrials.gov. General information only, not medical advice; not yet reviewed by our medical reviewer.