What the FDA labels say about taking them together
Fosamprenavir and midazolam
Fosamprenavir's FDA label of September 15, 2023 names midazolam in its contraindications section; the midazolam labels PlainMeds reads (4) do not name fosamprenavir. The fosamprenavir label: “Coadministration is contraindicated due to potential for serious and/or life-threatening reactions such as prolonged or increased sedation or respiratory depression.”
Check it at the source: the fosamprenavir FDA label on DailyMed (effective September 15, 2023, Mylan Pharmaceuticals Inc.); the midazolam FDA label on DailyMed (effective January 1, 2024, Fresenius Kabi USA, LLC).
What does the fosamprenavir label say about midazolam?
Fosamprenavir label, contraindicationsSildenafil (REVATIO ® ) (for treatment of pulmonary arterial hypertension) o Sedative/hypnotics: Midazolam, triazolam
Fosamprenavir label, drug interactionsConcomitant Drug Class/Drug Name: Sedative/hypnotics: Midazolam, triazolam; Effect on Concentration of Amprenavir or Concomitant Drug: ↑ Midazolam ↑ Triazolam; Clinical Comment: Coadministration is contraindicated due to potential for serious and/or life-threatening reactions such as prolonged or increased sedation or respiratory depression [see ].
Source: FDA drug label (Fosamprenavir Calcium), Mylan Pharmaceuticals Inc., effective September 15, 2023 (SPL set 3a1424d8-844c-4e24-9ebd-b2c2b61b61a3), via openFDA; the full label on DailyMed
What does the midazolam label say about fosamprenavir?
Midazolam's label (effective January 1, 2024) and its 3 other brand-application labels do not name fosamprenavir in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Midazolam), Fresenius Kabi USA, LLC, effective January 1, 2024 (SPL set 1cc9ba6e-fa1b-405e-9de8-720c567b2a73), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Fosamprenavir | Midazolam | |
|---|---|---|
| Labeled for | HIV | n/a |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | n/a | $0.233 per mL 2 mg/2 mL vial |
| Shortage now | No current entry | In shortage |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once